diff --git a/.efrocachemap b/.efrocachemap
index af253249..7e406c9c 100644
--- a/.efrocachemap
+++ b/.efrocachemap
@@ -4080,18 +4080,18 @@
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   "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/b0/ed/b7c1d78cf2f4ca9501ae6ada5f2a",
   "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/18/5b/eaea207321a10f13c932a3fd66d3",
-  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "https://files.ballistica.net/cache/ba1/c5/7e/265987e8fcf577ad16af94e2bfc1",
+  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "https://files.ballistica.net/cache/ba1/0c/2b/9fab63531b80c48e4751abd97dc2",
   "build/prefab/full/mac_arm64_gui/release/ballisticakit": "https://files.ballistica.net/cache/ba1/a8/5c/40fb49f7a0e1a65496766c5767e6",
-  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/9d/2a/c4d299466796907f998f8bf90cba",
+  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/2d/bf/7a2f85c03f3cf34a395b44d973d2",
   "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/6e/79/66ccaa09094203be7f1bd96ba81b",
-  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "https://files.ballistica.net/cache/ba1/f9/11/bf2dfaeb5f4bdbe0605768885321",
+  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "https://files.ballistica.net/cache/ba1/e1/85/9687ff7b6ef6816cacf6a73b3175",
   "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "https://files.ballistica.net/cache/ba1/84/af/9a03f2688c69a9f704cb8c4c52df",
-  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/16/f2/ccd623b7d0405c2d143995f18764",
+  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/50/a6/02867f49514bc30eef36324fbf40",
   "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "https://files.ballistica.net/cache/ba1/b2/0f/acd0b9a413537b781d21e9d3d48f",
-  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/d5/d4/0af750265cbf1aa48e06f1a9c2aa",
-  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/bd/d2/2e08eb06dba1da51de9e63fcba29",
-  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/c0/09/f1dc739ada9b7b0161a21c44b6c2",
-  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/49/af/6aeea157bc0bd8aa64ba62b53a9d",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/4a/fe/2bb19d0c6768998cac5e29aa28f3",
+  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "https://files.ballistica.net/cache/ba1/3e/03/37e6e3143dabc166e90ef9a1c53c",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/63/eb/b5b19380d16d171fdea79d2be504",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "https://files.ballistica.net/cache/ba1/50/f0/698126e96f79156f18c9cc17736f",
   "build/prefab/lib/linux_arm64_gui/debug/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/d4/6a/dd303a200b98a56ba3b100277057",
   "build/prefab/lib/linux_arm64_gui/release/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/fc/2c/2996c558fb408a548fdd37398c9a",
   "build/prefab/lib/linux_arm64_server/debug/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/ed/28/b7a72be7ae1bd2b58dda4b6902a0",
@@ -4108,14 +4108,14 @@
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   "build/prefab/lib/mac_x86_64_server/debug/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/b8/2b/6ec8c78980a62e3e0ee4b36ece04",
   "build/prefab/lib/mac_x86_64_server/release/libballistica_plus.a": "https://files.ballistica.net/cache/ba1/4e/56/a95c987b2a371759896b037fea86",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/6d/f5/f9b18801d48a1d8362e49ad51fe6",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/c8/67/ebfd87476c76c607b8ebedb0b850",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/3d/84/590188d1768800ff6364a1723a4e",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/d5/b9/4a2d5605540cdf6eb061732c68ab",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/ae/7d/0888f9b439b66cef7f67fd206dab",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/0a/fa/24503eb9a18f36f6d8655c307b03",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/7c/9f/069d28803741db9c3269c2a22d72",
-  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/fa/36/4946c0e26a9b62fe3f3279b34d3d",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/4b/cc/a2ec3215d71090861b22bf616104",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/73/60/e0da28e6c086648d8b85464eca14",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/7f/db/fa1351270bbc9705cefafd841d55",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/12/fb/a1f2e9b6fb7a094f8f7ad9520273",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.lib": "https://files.ballistica.net/cache/ba1/67/ca/f17bd5d265e24efcc2ecf6a7f71a",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitGenericPlus.pdb": "https://files.ballistica.net/cache/ba1/a1/50/7e6e23f7b68a9c9abb8e4cee7dd2",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.lib": "https://files.ballistica.net/cache/ba1/a8/42/554205c4e22be41bbb2b0fbbe218",
+  "build/prefab/lib/windows/Release_Win32/BallisticaKitHeadlessPlus.pdb": "https://files.ballistica.net/cache/ba1/bc/9f/9105016fe3cc388b00b6b920a683",
   "src/assets/ba_data/python/babase/_mgen/__init__.py": "https://files.ballistica.net/cache/ba1/52/c6/c11130af7b10d6c0321add5518fa",
   "src/assets/ba_data/python/babase/_mgen/enums.py": "https://files.ballistica.net/cache/ba1/38/c3/1dedd5e74f2508efc5974c8815a1",
   "src/ballistica/base/mgen/pyembed/binding_base.inc": "https://files.ballistica.net/cache/ba1/d5/4a/0e480a855ce83709bd7f6761107d",
diff --git a/Makefile b/Makefile
index 03e5346b..bcbaee32 100644
--- a/Makefile
+++ b/Makefile
@@ -582,6 +582,16 @@ build/prefab/lib/windows/Release_%/BallisticaKitHeadlessPlus.pdb: .efrocachemap
  prefab-windows-x86-server-release prefab-windows-x86-server-release-build
 
 
+################################################################################
+#                                                                              #
+#                                   Spinoff                                    #
+#                                                                              #
+################################################################################
+
+spinoff-test-empty:
+	tools/pcommand spinoff_test empty
+
+
 ################################################################################
 #                                                                              #
 #                                   Updating                                   #