diff --git a/.efrocachemap b/.efrocachemap
index dc12c592..c58e53c1 100644
--- a/.efrocachemap
+++ b/.efrocachemap
@@ -421,7 +421,7 @@
   "build/assets/ba_data/audio/zoeOw.ogg": "74befe45a8417e95b6a2233c51992a26",
   "build/assets/ba_data/audio/zoePickup01.ogg": "48ab8cddfcde36a750856f3f81dd20c8",
   "build/assets/ba_data/audio/zoeScream01.ogg": "2b468aedfa8741090247f04eb9e6df55",
-  "build/assets/ba_data/data/langdata.json": "02522e0d2593baf2e57a97fbfbfe3368",
+  "build/assets/ba_data/data/langdata.json": "229f9ecdddd777a0be2471979a0a01d6",
   "build/assets/ba_data/data/languages/arabic.json": "e0001d8542c904bc3c98a174f256efd9",
   "build/assets/ba_data/data/languages/belarussian.json": "7fe38341815ca6ff4d95224196e7a67e",
   "build/assets/ba_data/data/languages/chinese.json": "4e2f4f1f38216940953fcbee4da1563e",
@@ -430,14 +430,14 @@
   "build/assets/ba_data/data/languages/czech.json": "93c5fe0d884d95435da6c675f64e30e0",
   "build/assets/ba_data/data/languages/danish.json": "3fd69080783d5c9dcc0af737f02b6f1e",
   "build/assets/ba_data/data/languages/dutch.json": "22b44a33bf81142ba2befad14eb5746e",
-  "build/assets/ba_data/data/languages/english.json": "fe32cbe79483153db283e363da039a7a",
+  "build/assets/ba_data/data/languages/english.json": "bd43b77b1ccca059573acbde148b4767",
   "build/assets/ba_data/data/languages/esperanto.json": "0e397cfa5f3fb8cef5f4a64f21cda880",
   "build/assets/ba_data/data/languages/filipino.json": "afbda3adf14555e1567ee63c32e340e7",
   "build/assets/ba_data/data/languages/french.json": "49ff6d211537b8003b8241438dca661d",
   "build/assets/ba_data/data/languages/german.json": "450fa41ae264f29a5d1af22143d0d0ad",
-  "build/assets/ba_data/data/languages/gibberish.json": "00a9f70bccdfa407043e69a42e5b944c",
+  "build/assets/ba_data/data/languages/gibberish.json": "9aae526303a22372fe9b4cf1781520ef",
   "build/assets/ba_data/data/languages/greek.json": "287c0ec437b38772284ef9d3e4fb2fc3",
-  "build/assets/ba_data/data/languages/hindi.json": "8ea0c58a44a24edb131d0e53b074d1f6",
+  "build/assets/ba_data/data/languages/hindi.json": "8848f6b0caec0fcf9d85bc6e683809ec",
   "build/assets/ba_data/data/languages/hungarian.json": "796a290a8c44a1e7635208c2ff5fdc6e",
   "build/assets/ba_data/data/languages/indonesian.json": "97657eb2ab75d821045387b6d7a2b52d",
   "build/assets/ba_data/data/languages/italian.json": "cda5760f247500657722c279bc2f2bc7",
@@ -445,16 +445,16 @@
   "build/assets/ba_data/data/languages/malay.json": "832562ce997fc70704b9234c95fb2e38",
   "build/assets/ba_data/data/languages/persian.json": "4f448b29ba04f2b789329600cb7f9ab7",
   "build/assets/ba_data/data/languages/polish.json": "8bb8f7baa5efcf6cdd627140d209c2b2",
-  "build/assets/ba_data/data/languages/portuguese.json": "c738cc76396305060d4f94cb77db5bec",
+  "build/assets/ba_data/data/languages/portuguese.json": "93070dbcc020d6879b3a8b163bb833b4",
   "build/assets/ba_data/data/languages/romanian.json": "aeebdd54f65939c2facc6ac50c117826",
-  "build/assets/ba_data/data/languages/russian.json": "cdaac43afde13ab622babe403b9858a4",
+  "build/assets/ba_data/data/languages/russian.json": "e120993371f52edd2d99f2236188933c",
   "build/assets/ba_data/data/languages/serbian.json": "d7452dd72ac0e51680cb39b5ebaa1c69",
   "build/assets/ba_data/data/languages/slovak.json": "27962d53dc3f7dd4e877cd40faafeeef",
-  "build/assets/ba_data/data/languages/spanish.json": "f73b0d4d534f030f95c00385bb06cbc1",
+  "build/assets/ba_data/data/languages/spanish.json": "80ea58bd3295a0252b7fdac9154aa22f",
   "build/assets/ba_data/data/languages/swedish.json": "5142a96597d17d8344be96a603da64ac",
   "build/assets/ba_data/data/languages/tamil.json": "b4de1a2851afe4869c82e9acd94cd89c",
   "build/assets/ba_data/data/languages/thai.json": "77755219bbf5fb7eea0d6b226684f403",
-  "build/assets/ba_data/data/languages/turkish.json": "326bcc54b69cb6a1bda4abb732f9f56f",
+  "build/assets/ba_data/data/languages/turkish.json": "b1e491b70cec59cfa1057b8c5e7801b2",
   "build/assets/ba_data/data/languages/ukrainian.json": "e5c861187c4c6db37d1a033f4ef3dd5a",
   "build/assets/ba_data/data/languages/venetian.json": "9fe1a58d9e5dfb00f31ce3b2eb9993f4",
   "build/assets/ba_data/data/languages/vietnamese.json": "921cd1e50f60fe3e101f246e172750ba",
@@ -4056,50 +4056,50 @@
   "build/assets/windows/Win32/ucrtbased.dll": "2def5335207d41b21b9823f6805997f1",
   "build/assets/windows/Win32/vc_redist.x86.exe": "b08a55e2e77623fe657bea24f223a3ae",
   "build/assets/windows/Win32/vcruntime140d.dll": "865b2af4d1e26a1a8073c89acb06e599",
-  "build/prefab/full/linux_arm64_gui/debug/ballisticakit": "abab400c9116a3825a5bb90d31ebe3b7",
-  "build/prefab/full/linux_arm64_gui/release/ballisticakit": "5641927c9074dc4e759d3761a42dd3cc",
-  "build/prefab/full/linux_arm64_server/debug/dist/ballisticakit_headless": "113eb282e6f5d7a082f8dfc2f19db078",
-  "build/prefab/full/linux_arm64_server/release/dist/ballisticakit_headless": "cdee95f3c6bc21f7ff3016ff3c719178",
-  "build/prefab/full/linux_x86_64_gui/debug/ballisticakit": "a20fb4fd648a6e66bc5395f48796a5b8",
-  "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "be599ec099f2a1f4109ceda6a05a8c62",
-  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "f22486755f0c0f2b106926d5a9ee97c9",
-  "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "ca382a4fa963a50af3675c811526ba76",
-  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "00f392858c451a8d395c7cd7958f7af7",
-  "build/prefab/full/mac_arm64_gui/release/ballisticakit": "1f66a8a8f8d8041667a4b6cb71baffbd",
-  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "c4153466b51a30b444d2350156a9fbb7",
-  "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "91c3c980de79faee6854c1c88408bd0c",
-  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "143bfda2b349f5505068dd874802413f",
-  "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "293cb9525c241d1dda224461db34b631",
-  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "6dc3c9f9637d3f4e16d0a9093a59b1e7",
-  "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "bbce1ea501fc419f6d83882b2c283eb0",
-  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "cceac583899afd4e97e4fd7dea2611fb",
-  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "6ad184e11ae0b85137b37bbf2a75b331",
-  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "a1b15a12b361ba60cead3f8045bbd545",
-  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "1949706b21961783d428034b03982521",
-  "build/prefab/lib/linux_arm64_gui/debug/libballisticaplus.a": "dc8d1e0f82fe799cbbacfd89bbf04498",
-  "build/prefab/lib/linux_arm64_gui/release/libballisticaplus.a": "c6be3757c2ee85a7f4f8a66d327a24a0",
-  "build/prefab/lib/linux_arm64_server/debug/libballisticaplus.a": "dc8d1e0f82fe799cbbacfd89bbf04498",
-  "build/prefab/lib/linux_arm64_server/release/libballisticaplus.a": "c6be3757c2ee85a7f4f8a66d327a24a0",
-  "build/prefab/lib/linux_x86_64_gui/debug/libballisticaplus.a": "859470a05f3d968031ae9843bdf818c3",
-  "build/prefab/lib/linux_x86_64_gui/release/libballisticaplus.a": "bd8926fb9d12b7f4972870efea006d54",
-  "build/prefab/lib/linux_x86_64_server/debug/libballisticaplus.a": "859470a05f3d968031ae9843bdf818c3",
-  "build/prefab/lib/linux_x86_64_server/release/libballisticaplus.a": "bd8926fb9d12b7f4972870efea006d54",
-  "build/prefab/lib/mac_arm64_gui/debug/libballisticaplus.a": "11eeb74f8cb307ed673768c0629ca302",
-  "build/prefab/lib/mac_arm64_gui/release/libballisticaplus.a": "5f6ed20081020d554b1866389136b712",
-  "build/prefab/lib/mac_arm64_server/debug/libballisticaplus.a": "11eeb74f8cb307ed673768c0629ca302",
-  "build/prefab/lib/mac_arm64_server/release/libballisticaplus.a": "5f6ed20081020d554b1866389136b712",
-  "build/prefab/lib/mac_x86_64_gui/debug/libballisticaplus.a": "d9407d62ab82cdf25e970e3fde8971fa",
-  "build/prefab/lib/mac_x86_64_gui/release/libballisticaplus.a": "856a05aadbe4b75baee3048296aa8eef",
-  "build/prefab/lib/mac_x86_64_server/debug/libballisticaplus.a": "c5eb4a9161b68775876c4d19bff1cc1b",
-  "build/prefab/lib/mac_x86_64_server/release/libballisticaplus.a": "856a05aadbe4b75baee3048296aa8eef",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "f297a236664bf55b81f19e5c69d81b64",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "9eb9f987869a87ab1280d70c8069df6a",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "f269cab8edb50101fff358735255151d",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "2631845123a868a98ef1156c786d1cff",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "a5f59a9cd23e6b3ec18834a169d6a6e0",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "35b984001137f4bde7dc7bf4576da320",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "cf974280198d48a836b0f433ebf84b68",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "97260251b62485cc95da5b41aa90f9ca",
+  "build/prefab/full/linux_arm64_gui/debug/ballisticakit": "04cc9672b68549229d886d3a96c559f8",
+  "build/prefab/full/linux_arm64_gui/release/ballisticakit": "60bc7a1b793cb8c7cc9ee2305a75953b",
+  "build/prefab/full/linux_arm64_server/debug/dist/ballisticakit_headless": "eb68b04ffb489e7f54e4b13eabc0c416",
+  "build/prefab/full/linux_arm64_server/release/dist/ballisticakit_headless": "5a84d5cfb73f0e0ece21e1770297cbb3",
+  "build/prefab/full/linux_x86_64_gui/debug/ballisticakit": "d738dcba7e385ef2f33b7fa99f67a1cf",
+  "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "f77cca19be423f9f336e16aafd7d0a5c",
+  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "f9b295df29fd33143b2f22f493b6bc7b",
+  "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "c001b5a1209f65915cb5fb5e535ce53f",
+  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "e14f263b6b6de064bf511793c6daf475",
+  "build/prefab/full/mac_arm64_gui/release/ballisticakit": "ba8114d593ba4bba116fc2c80187e38c",
+  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "04abddf234a1a24769a80c5338600cd0",
+  "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "2f0a86b778a4bd1e6d9030c8e487667b",
+  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "ea3c80e71f0f9649316b25c463d0cca1",
+  "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "5466299bc6a5441e163f8b0d20cf46b8",
+  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "2db72fb3a266978da20f771942c0522d",
+  "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "46d9588afa767ac1d42e9ea8410ce479",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "a4b700a36f77b981187292d875062fb1",
+  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "f029c6193ff74de24294bc36c747e42e",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "c9c886f24652bccb21eae3916d156733",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "9d6dee5923fdad2444e4980421b61cff",
+  "build/prefab/lib/linux_arm64_gui/debug/libballisticaplus.a": "d13fe92c2320101a4181492268ba70ca",
+  "build/prefab/lib/linux_arm64_gui/release/libballisticaplus.a": "0a2c9c29c146659e06c0d759de0470a3",
+  "build/prefab/lib/linux_arm64_server/debug/libballisticaplus.a": "d13fe92c2320101a4181492268ba70ca",
+  "build/prefab/lib/linux_arm64_server/release/libballisticaplus.a": "0a2c9c29c146659e06c0d759de0470a3",
+  "build/prefab/lib/linux_x86_64_gui/debug/libballisticaplus.a": "35ea11934b942d4e324cf33a7f7db1dd",
+  "build/prefab/lib/linux_x86_64_gui/release/libballisticaplus.a": "df851b6dd6df1ffb00695faf8e33cc5d",
+  "build/prefab/lib/linux_x86_64_server/debug/libballisticaplus.a": "35ea11934b942d4e324cf33a7f7db1dd",
+  "build/prefab/lib/linux_x86_64_server/release/libballisticaplus.a": "df851b6dd6df1ffb00695faf8e33cc5d",
+  "build/prefab/lib/mac_arm64_gui/debug/libballisticaplus.a": "157a0fd47c7b48c66be6058e76743620",
+  "build/prefab/lib/mac_arm64_gui/release/libballisticaplus.a": "9e89c86c7d5a525ce08193fced92145e",
+  "build/prefab/lib/mac_arm64_server/debug/libballisticaplus.a": "157a0fd47c7b48c66be6058e76743620",
+  "build/prefab/lib/mac_arm64_server/release/libballisticaplus.a": "9e89c86c7d5a525ce08193fced92145e",
+  "build/prefab/lib/mac_x86_64_gui/debug/libballisticaplus.a": "0cfbed48c5d2500ae087b4a3416589f0",
+  "build/prefab/lib/mac_x86_64_gui/release/libballisticaplus.a": "d036dfa710783e8b7948c656902660f8",
+  "build/prefab/lib/mac_x86_64_server/debug/libballisticaplus.a": "f453e38d79316914e6caeb0eb077c439",
+  "build/prefab/lib/mac_x86_64_server/release/libballisticaplus.a": "d036dfa710783e8b7948c656902660f8",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "be8918e4c25df2ca78754e73e8acb2d3",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "09c0a5d4fb356b39959091185500e100",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "9fd25d104cbe1cf2c11ae5ffd45bd5b6",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "3af52572a283f2a7c1c52cb069e02828",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "c62abf065085981e6a34298abe457a59",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "acacc1c19b703e2358efde714eeab986",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "35e4e4162ba4d34cda62fef2699b20a7",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "862b132df7db2003ff505113d446e089",
   "src/assets/ba_data/python/babase/_mgen/__init__.py": "f885fed7f2ed98ff2ba271f9dbe3391c",
   "src/assets/ba_data/python/babase/_mgen/enums.py": "28323912b56ec07701eda3d41a6a4101",
   "src/ballistica/base/mgen/pyembed/binding_base.inc": "72bfed2cce8ff19741989dec28302f3f",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index bcb97511..3fdd1001 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,12 @@
-### 1.7.28 (build 21596, api 8, 2023-11-14)
+### 1.7.29 (build 21609, api 8, 2023-11-18)
+
+- Simply continued work on the big 1.7.28 update. I finally got the Mac App
+  Store version of the game updated (it had been stuck at 1.4!), and it turns
+  out that Apple AppStore submissions require the version number to increase
+  each time and not just the build number, so we may start seeing more minor
+  version bumps for that reason.
+
+### 1.7.28 (build 21599, api 8, 2023-11-16)
 
 - Turning off ticket continues on all platforms. I'll be moving the game towards
   a new monetization scheme mostly based on cosmetics and this has always felt a
diff --git a/config/spinoffconfig.py b/config/spinoffconfig.py
index 1cbbc0f8..21b06551 100644
--- a/config/spinoffconfig.py
+++ b/config/spinoffconfig.py
@@ -103,7 +103,8 @@ ctx.src_unchecked_paths = {
     'ballisticakit-xcode/BallisticaKit Shared/Assets.xcassets/*/*.png',
     'ballisticakit-xcode/BallisticaKit Shared/Assets.xcassets/*/*/*.png',
     'ballisticakit-xcode/BallisticaKit Shared/Assets.xcassets/*/*/*/*/*.png',
-    'ballisticakit-xcode/BallisticaKit.xcodeproj/xcuserdata',
+    'ballisticakit-xcode/BallisticaKit.xcodeproj/'
+    'project.xcworkspace/xcuserdata',
     'ballisticakit-android/BallisticaKit/src/*/res/*/*.png',
     'ballisticakit-android/BallisticaKit/src/*/assets/ballistica_files',
     'ballisticakit-android/local.properties',
diff --git a/src/assets/ba_data/python/babase/_accountv2.py b/src/assets/ba_data/python/babase/_accountv2.py
index 8738b8f1..f9617fcb 100644
--- a/src/assets/ba_data/python/babase/_accountv2.py
+++ b/src/assets/ba_data/python/babase/_accountv2.py
@@ -6,7 +6,7 @@ from __future__ import annotations
 
 import hashlib
 import logging
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, assert_never
 
 from efro.call import tpartial
 from efro.error import CommunicationError
@@ -199,18 +199,26 @@ class AccountV2Subsystem:
                 state.login_id
             )
 
-            # Special case: if the user is already signed in but not with
-            # this implicit login, we may want to let them know that the
-            # 'Welcome back FOO' they likely just saw is not actually
-            # accurate.
+            # Special case: if the user is already signed in but not
+            # with this implicit login, let them know that the 'Welcome
+            # back FOO' they likely just saw is not actually accurate.
             if (
                 self.primary is not None
                 and not self.login_adapters[login_type].is_back_end_active()
             ):
+                service_str: Lstr | None
                 if login_type is LoginType.GPGS:
                     service_str = Lstr(resource='googlePlayText')
-                else:
+                elif login_type is LoginType.GAME_CENTER:
+                    # Note: Apparently Game Center is just called 'Game
+                    # Center' in all languages. Can revisit if not true.
+                    # https://developer.apple.com/forums/thread/725779
+                    service_str = Lstr(value='Game Center')
+                elif login_type is LoginType.EMAIL:
+                    # Not possible; just here for exhaustive coverage.
                     service_str = None
+                else:
+                    assert_never(login_type)
                 if service_str is not None:
                     _babase.apptimer(
                         2.0,
diff --git a/src/assets/ba_data/python/baenv.py b/src/assets/ba_data/python/baenv.py
index 006b75f0..284fdda6 100644
--- a/src/assets/ba_data/python/baenv.py
+++ b/src/assets/ba_data/python/baenv.py
@@ -52,8 +52,8 @@ if TYPE_CHECKING:
 
 # Build number and version of the ballistica binary we expect to be
 # using.
-TARGET_BALLISTICA_BUILD = 21596
-TARGET_BALLISTICA_VERSION = '1.7.28'
+TARGET_BALLISTICA_BUILD = 21609
+TARGET_BALLISTICA_VERSION = '1.7.29'
 
 
 @dataclass
diff --git a/src/assets/ba_data/python/bauiv1/_subsystem.py b/src/assets/ba_data/python/bauiv1/_subsystem.py
index 311650cb..83d88d87 100644
--- a/src/assets/ba_data/python/bauiv1/_subsystem.py
+++ b/src/assets/ba_data/python/bauiv1/_subsystem.py
@@ -66,6 +66,16 @@ class UIV1Subsystem(babase.AppSubsystem):
         # a more elegant way once we revamp high level UI stuff a bit.
         self.selecting_private_party_playlist: bool = False
 
+    @property
+    def available(self) -> bool:
+        """Can uiv1 currently be used?
+
+        Code that may run in headless mode, before the UI has been spun up,
+        while other ui systems are active, etc. can check this to avoid
+        likely erroring.
+        """
+        return _bauiv1.is_available()
+
     @property
     def uiscale(self) -> babase.UIScale:
         """Current ui scale for the app."""
diff --git a/src/assets/ba_data/python/bauiv1lib/account/settings.py b/src/assets/ba_data/python/bauiv1lib/account/settings.py
index 46c5313a..8c29aee5 100644
--- a/src/assets/ba_data/python/bauiv1lib/account/settings.py
+++ b/src/assets/ba_data/python/bauiv1lib/account/settings.py
@@ -654,6 +654,9 @@ class AccountSettingsWindow(bui.Window):
                 position=((self._sub_width - button_width) * 0.5, v - 20),
                 autoselect=True,
                 size=(button_width, 60),
+                # Note: Apparently Game Center is just called 'Game Center'
+                # in all languages. Can revisit if not true.
+                # https://developer.apple.com/forums/thread/725779
                 label=bui.Lstr(
                     value='${A}${B}',
                     subs=[
@@ -860,7 +863,7 @@ class AccountSettingsWindow(bui.Window):
             button_width = 300
             v -= game_service_button_space * 0.6
             if game_center_active:
-                # Update: Apparently Game Center is just called 'Game Center'
+                # Note: Apparently Game Center is just called 'Game Center'
                 # in all languages. Can revisit if not true.
                 # https://developer.apple.com/forums/thread/725779
                 game_service_button_label = bui.Lstr(
diff --git a/src/assets/ba_data/python/bauiv1lib/promocode.py b/src/assets/ba_data/python/bauiv1lib/promocode.py
index ae8d0549..3e7f035c 100644
--- a/src/assets/ba_data/python/bauiv1lib/promocode.py
+++ b/src/assets/ba_data/python/bauiv1lib/promocode.py
@@ -26,7 +26,7 @@ class PromoCodeWindow(bui.Window):
             transition = 'in_right'
 
         width = 450
-        height = 230
+        height = 330
 
         self._modal = modal
         self._r = 'promoCodeWindow'
@@ -62,17 +62,50 @@ class PromoCodeWindow(bui.Window):
             iconscale=1.2,
         )
 
+        v = height - 74
+        bui.textwidget(
+            parent=self._root_widget,
+            text=bui.Lstr(resource='codesExplainText'),
+            maxwidth=width * 0.9,
+            position=(width * 0.5, v),
+            color=(0.7, 0.7, 0.7, 1.0),
+            size=(0, 0),
+            scale=0.8,
+            h_align='center',
+            v_align='center',
+        )
+        v -= 60
+
+        bui.textwidget(
+            parent=self._root_widget,
+            text=bui.Lstr(
+                resource='supportEmailText',
+                subs=[('${EMAIL}', 'support@froemling.net')],
+            ),
+            maxwidth=width * 0.9,
+            position=(width * 0.5, v),
+            color=(0.7, 0.7, 0.7, 1.0),
+            size=(0, 0),
+            scale=0.65,
+            h_align='center',
+            v_align='center',
+        )
+
+        v -= 80
+
         bui.textwidget(
             parent=self._root_widget,
             text=bui.Lstr(resource=self._r + '.codeText'),
-            position=(22, height - 113),
+            position=(22, v),
             color=(0.8, 0.8, 0.8, 1.0),
             size=(90, 30),
             h_align='right',
         )
+        v -= 8
+
         self._text_field = bui.textwidget(
             parent=self._root_widget,
-            position=(125, height - 121),
+            position=(125, v),
             size=(280, 46),
             text='',
             h_align='left',
@@ -86,10 +119,11 @@ class PromoCodeWindow(bui.Window):
         )
         bui.widget(edit=btn, down_widget=self._text_field)
 
+        v -= 79
         b_width = 200
         self._enter_button = btn2 = bui.buttonwidget(
             parent=self._root_widget,
-            position=(width * 0.5 - b_width * 0.5, height - 200),
+            position=(width * 0.5 - b_width * 0.5, v),
             size=(b_width, 60),
             scale=1.0,
             label=bui.Lstr(
diff --git a/src/ballistica/base/app_adapter/app_adapter_apple.cc b/src/ballistica/base/app_adapter/app_adapter_apple.cc
index 885f8092..018f72db 100644
--- a/src/ballistica/base/app_adapter/app_adapter_apple.cc
+++ b/src/ballistica/base/app_adapter/app_adapter_apple.cc
@@ -27,7 +27,10 @@ namespace ballistica::base {
 class AppAdapterApple::ScopedAllowGraphics_ {
  public:
   explicit ScopedAllowGraphics_(AppAdapterApple* adapter) : adapter_{adapter} {
+    // We currently assume only one thread will be doing this at any given
+    // time; will need to add a lock if that's not always the case.
     assert(!adapter_->graphics_allowed_);
+    // Keep graphics thread updated each time through since it can change.
     adapter->graphics_thread_ = std::this_thread::get_id();
     adapter->graphics_allowed_ = true;
   }
@@ -99,9 +102,9 @@ void AppAdapterApple::ReloadRenderer_(const GraphicsSettings* settings) {
   gs->LoadRenderer();
 }
 
-void AppAdapterApple::UpdateScreenSizes_() {
-  assert(g_base->app_adapter->InGraphicsContext());
-}
+// void AppAdapterApple::UpdateScreenSizes_() {
+//   assert(g_base->app_adapter->InGraphicsContext());
+// }
 
 auto AppAdapterApple::TryRender() -> bool {
   auto allow = ScopedAllowGraphics_(this);
@@ -187,7 +190,7 @@ auto AppAdapterApple::ShouldUseCursor() -> bool {
 }
 
 auto AppAdapterApple::HasHardwareCursor() -> bool {
-  // (mac should be only build getting called here)
+  // Mac should be only build getting called here (see ShouldUseCursor).
   assert(g_buildconfig.ostype_macos());
 
   return true;
diff --git a/src/ballistica/base/app_adapter/app_adapter_apple.h b/src/ballistica/base/app_adapter/app_adapter_apple.h
index 036bf820..520adaf8 100644
--- a/src/ballistica/base/app_adapter/app_adapter_apple.h
+++ b/src/ballistica/base/app_adapter/app_adapter_apple.h
@@ -66,7 +66,7 @@ class AppAdapterApple : public AppAdapter {
  private:
   class ScopedAllowGraphics_;
 
-  void UpdateScreenSizes_();
+  // void UpdateScreenSizes_();
   void ReloadRenderer_(const GraphicsSettings* settings);
 
   std::thread::id graphics_thread_{};
diff --git a/src/ballistica/base/base.cc b/src/ballistica/base/base.cc
index 6a7a18cd..1819474f 100644
--- a/src/ballistica/base/base.cc
+++ b/src/ballistica/base/base.cc
@@ -239,9 +239,6 @@ void BaseFeatureSet::StartApp() {
   // to avoid crashing if called early.
   app_started_ = true;
 
-  // Inform anyone who wants to know that we're done starting.
-  platform->OnMainThreadStartAppComplete();
-
   // As the last step of this phase, tell the logic thread to apply the app
   // config which will kick off screen creation and otherwise get the ball
   // rolling.
diff --git a/src/ballistica/base/platform/base_platform.cc b/src/ballistica/base/platform/base_platform.cc
index afddeaf1..3bbc202d 100644
--- a/src/ballistica/base/platform/base_platform.cc
+++ b/src/ballistica/base/platform/base_platform.cc
@@ -165,8 +165,6 @@ void BasePlatform::SetupInterruptHandling() {
 #endif
 }
 
-void BasePlatform::OnMainThreadStartAppComplete() {}
-
 void BasePlatform::OnAppStart() { assert(g_base->InLogicThread()); }
 void BasePlatform::OnAppPause() { assert(g_base->InLogicThread()); }
 void BasePlatform::OnAppResume() { assert(g_base->InLogicThread()); }
diff --git a/src/ballistica/base/platform/base_platform.h b/src/ballistica/base/platform/base_platform.h
index 4e139bd7..35d9bfa6 100644
--- a/src/ballistica/base/platform/base_platform.h
+++ b/src/ballistica/base/platform/base_platform.h
@@ -24,10 +24,6 @@ class BasePlatform {
 
 #pragma mark APP EVENTS / LIFECYCLE --------------------------------------------
 
-  /// Called to inform the platform that all subsystems are up and running
-  /// and it can start talking to them.
-  virtual void OnMainThreadStartAppComplete();
-
   // Logic thread callbacks.
   virtual void OnAppStart();
   virtual void OnAppPause();
diff --git a/src/ballistica/shared/ballistica.cc b/src/ballistica/shared/ballistica.cc
index 22603f36..66948a27 100644
--- a/src/ballistica/shared/ballistica.cc
+++ b/src/ballistica/shared/ballistica.cc
@@ -39,8 +39,8 @@ auto main(int argc, char** argv) -> int {
 namespace ballistica {
 
 // These are set automatically via script; don't modify them here.
-const int kEngineBuildNumber = 21596;
-const char* kEngineVersion = "1.7.28";
+const int kEngineBuildNumber = 21609;
+const char* kEngineVersion = "1.7.29";
 const int kEngineApiVersion = 8;
 
 #if BA_MONOLITHIC_BUILD
diff --git a/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc b/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc
index 87434540..79c28a3e 100644
--- a/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc
+++ b/src/ballistica/ui_v1/python/methods/python_methods_ui_v1.cc
@@ -2821,7 +2821,7 @@ static PyMethodDef PyIsPartyIconVisibleDef = {
     "(internal)",
 };
 
-// ------------------------ is_party_icon_visible ------------------------------
+// ----------------------------- toolbar_test ----------------------------------
 
 static auto PyToolbarTest(PyObject* self) -> PyObject* {
   BA_PYTHON_TRY;
@@ -2843,6 +2843,31 @@ static PyMethodDef PyToolbarTestDef = {
     "(internal)",
 };
 
+// ----------------------------- is_available ----------------------------------
+
+static auto PyIsAvailable(PyObject* self) -> PyObject* {
+  BA_PYTHON_TRY;
+  BA_PRECONDITION(g_base->InLogicThread());
+
+  // Consider ourself available if the active ui delegate is us.
+  if (dynamic_cast<UIV1FeatureSet*>(g_base->ui->delegate()) != nullptr) {
+    Py_RETURN_TRUE;
+  } else {
+    Py_RETURN_FALSE;
+  }
+  BA_PYTHON_CATCH;
+}
+
+static PyMethodDef PyIsAvailableDef = {
+    "is_available",              // name
+    (PyCFunction)PyIsAvailable,  // method
+    METH_NOARGS,                 // flags
+
+    "is_available() -> bool\n"
+    "\n"
+    "(internal)",
+};
+
 // -----------------------------------------------------------------------------
 
 auto PythonMethodsUIV1::GetMethods() -> std::vector<PyMethodDef> {
@@ -2877,6 +2902,7 @@ auto PythonMethodsUIV1::GetMethods() -> std::vector<PyMethodDef> {
       PyGetTextureDef,
       PyGetMeshDef,
       PyToolbarTestDef,
+      PyIsAvailableDef,
   };
 }
 
diff --git a/tools/batools/resourcesmakefile.py b/tools/batools/resourcesmakefile.py
index a08ebdd5..b865a1fb 100755
--- a/tools/batools/resourcesmakefile.py
+++ b/tools/batools/resourcesmakefile.py
@@ -309,7 +309,22 @@ class ResourcesMakefileGenerator:
         ]
         for size in sizes:
             res = int(size[0] * size[1])
-            src = os.path.join('icon', 'icon_clipped_mac.png')
+            # The largest size gets used by the Mac App Store, and lots
+            # of games seem to fill their entire icon canvas instead of
+            # sticking with the big-sur icon size, so ours looks kinda
+            # small next to those if we don't do the same. Strangely,
+            # iOS apps in the Mac App Store also show up large like that
+            # (as of Nov 2023). So we use a separate as-big-as-possible
+            # icon for our largest size only. The downside of this is
+            # our icon changes in appearance if someone cranks the
+            # finder view options icon size slider all the way up, but
+            # who actually does that?
+            srcname = (
+                'icon_clipped_mac_app_store.png'
+                if size[0] == 512
+                else 'icon_clipped_mac.png'
+            )
+            src = os.path.join('icon', srcname)
             dst = os.path.join(
                 ROOT_DIR,
                 f'{self.namel}-xcode',
diff --git a/tools/efrotools/pybuild.py b/tools/efrotools/pybuild.py
index 79a6dd7b..6d5a2a83 100644
--- a/tools/efrotools/pybuild.py
+++ b/tools/efrotools/pybuild.py
@@ -42,7 +42,7 @@ OPENSSL_VER_ANDROID = '3.0.12'
 
 LIBFFI_VER_APPLE = '3.4.4'
 BZIP2_VER_APPLE = '1.0.8'
-XZ_VER_APPLE = '5.4.5'
+XZ_VER_APPLE = '5.4.4'
 
 # Android repo doesn't seem to be getting updated much so manually
 # bumping various versions to keep things up to date.