diff --git a/.efrocachemap b/.efrocachemap
index 7513517c..a440fa18 100644
--- a/.efrocachemap
+++ b/.efrocachemap
@@ -3934,48 +3934,48 @@
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   "assets/build/windows/Win32/vcruntime140d.dll": "https://files.ballistica.net/cache/ba1/50/8d/bc2600ac9491f1b14d659709451f",
   "ballisticacore-windows/Generic/BallisticaCore.ico": "https://files.ballistica.net/cache/ba1/89/c0/e32c7d2a35dc9aef57cc73b0911a",
-  "build/prefab/full/linux_arm64_gui/debug/ballisticacore": "https://files.ballistica.net/cache/ba1/6c/4a/ea20aa40a0336346481db7a3e7cc",
+  "build/prefab/full/linux_arm64_gui/debug/ballisticacore": "https://files.ballistica.net/cache/ba1/61/8d/3bd881b575b20d2539aebc3c5fbc",
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-  "build/prefab/full/linux_arm64_server/debug/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/79/a4/151c407676751226822b7f3fea28",
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+  "build/prefab/full/linux_arm64_server/debug/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/d2/ea/6381f6acbfa7e34c1af6b97748fc",
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-  "build/prefab/lib/windows/Debug_Win32/BallisticaCoreGenericInternal.lib": "https://files.ballistica.net/cache/ba1/42/77/1921f1016cb750497752ec391b1c",
-  "build/prefab/lib/windows/Debug_Win32/BallisticaCoreGenericInternal.pdb": "https://files.ballistica.net/cache/ba1/0e/41/d04161c863b9fa6d5100a2a0f5d3",
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-  "build/prefab/lib/windows/Release_Win32/BallisticaCoreGenericInternal.lib": "https://files.ballistica.net/cache/ba1/36/05/bdbffaab5039230c2fbcb7d8c878",
-  "build/prefab/lib/windows/Release_Win32/BallisticaCoreGenericInternal.pdb": "https://files.ballistica.net/cache/ba1/e7/c4/324bb33d12a37d46c6a38da7a63d",
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+  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/15/82/c837b1277ce68259927ee76c70a2",
+  "build/prefab/full/linux_x86_64_server/release/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/87/38/d41db38f2a4b6c82e2f0190ac0c1",
+  "build/prefab/full/mac_arm64_gui/debug/ballisticacore": "https://files.ballistica.net/cache/ba1/8c/4c/440acf05835f677f02bf45eea5f3",
+  "build/prefab/full/mac_arm64_gui/release/ballisticacore": "https://files.ballistica.net/cache/ba1/60/7c/036d94438a4c6688a19560586cc6",
+  "build/prefab/full/mac_arm64_server/debug/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/dd/66/5ccf21a659e5a93f554041196002",
+  "build/prefab/full/mac_arm64_server/release/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/8d/a2/4bbbed39caf3ad45e97fd855bffc",
+  "build/prefab/full/mac_x86_64_gui/debug/ballisticacore": "https://files.ballistica.net/cache/ba1/ee/b6/0667a97d33810d50126bb5c2e79a",
+  "build/prefab/full/mac_x86_64_gui/release/ballisticacore": "https://files.ballistica.net/cache/ba1/1e/ec/1dce16e09b5d2efbe86d9ef1fd22",
+  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/03/d3/ade627a7f28d6443f03753e67c8c",
+  "build/prefab/full/mac_x86_64_server/release/dist/ballisticacore_headless": "https://files.ballistica.net/cache/ba1/56/72/65f211669bf7e59dc752505e70fa",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaCore.exe": "https://files.ballistica.net/cache/ba1/2d/45/0f969be014d94450e0fecddb6892",
+  "build/prefab/full/windows_x86_gui/release/BallisticaCore.exe": "https://files.ballistica.net/cache/ba1/1a/5b/f4f09d532190b2f374c769c36595",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaCoreHeadless.exe": "https://files.ballistica.net/cache/ba1/a2/f6/8ffa679c2219a41925c89d49e77b",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaCoreHeadless.exe": "https://files.ballistica.net/cache/ba1/08/1b/81b4d00361b1c98e729929de3af4",
+  "build/prefab/lib/linux_arm64_gui/debug/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/9a/32/bda06e355384dac2fc81c8357812",
+  "build/prefab/lib/linux_arm64_gui/release/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/34/f6/b4db57144d47cfdb153dd4de6742",
+  "build/prefab/lib/linux_arm64_server/debug/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/53/44/cf4405c2ebe2695d55858129d3fe",
+  "build/prefab/lib/linux_arm64_server/release/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/e6/3c/8f64df25f1ee5b24f736ef1ac1c9",
+  "build/prefab/lib/linux_x86_64_gui/debug/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/f3/c1/9e4b57841605233b5dafc037b4af",
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+  "build/prefab/lib/mac_arm64_server/debug/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/b5/66/89272c8577954d2382ec60b9f0af",
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+  "build/prefab/lib/mac_x86_64_gui/debug/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/1e/38/59b3b58320e5680e86732823ae78",
+  "build/prefab/lib/mac_x86_64_gui/release/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/b5/5b/0390ee8916f97d302cde3ea356bc",
+  "build/prefab/lib/mac_x86_64_server/debug/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/7a/ee/8249ede29becc0cd41178924b6dc",
+  "build/prefab/lib/mac_x86_64_server/release/libballisticacore_internal.a": "https://files.ballistica.net/cache/ba1/c0/5f/e89024a87dd092f6e0cc43afb707",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaCoreGenericInternal.lib": "https://files.ballistica.net/cache/ba1/98/96/f64c1236e4f328e1fec0d42ccd1f",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaCoreGenericInternal.pdb": "https://files.ballistica.net/cache/ba1/8f/a6/e7e3bdf82333c7971eda5f01974c",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaCoreHeadlessInternal.lib": "https://files.ballistica.net/cache/ba1/e8/a4/eea8a31ffa673b3b7f2ead00c737",
+  "build/prefab/lib/windows/Debug_Win32/BallisticaCoreHeadlessInternal.pdb": "https://files.ballistica.net/cache/ba1/73/f7/04dcf8b208008d93110d494f4277",
+  "build/prefab/lib/windows/Release_Win32/BallisticaCoreGenericInternal.lib": "https://files.ballistica.net/cache/ba1/8b/b4/e345000aa4c97bd1f7527360d315",
+  "build/prefab/lib/windows/Release_Win32/BallisticaCoreGenericInternal.pdb": "https://files.ballistica.net/cache/ba1/cf/99/0dd1c00a7155bcfba6fe905fe5b6",
+  "build/prefab/lib/windows/Release_Win32/BallisticaCoreHeadlessInternal.lib": "https://files.ballistica.net/cache/ba1/e8/c5/17a85bd9d4e012e8ef726c453fbc",
+  "build/prefab/lib/windows/Release_Win32/BallisticaCoreHeadlessInternal.pdb": "https://files.ballistica.net/cache/ba1/39/a3/aa835091c1b383211d5751a0ed5e"
 }
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8b54f71..2a200915 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,9 @@
-### 1.6.4 (20371)
+### 1.6.4 (20382)
 - Some cleanups in the Favorites tab of the gather window.
 - Reorganized prefab target names; some targets such as `prefab-debug` are now `prefab-gui-debug` (more consistent with the existing `prefab-server-debug` targets).
 - Windows builds now go to build/windows instead of ballisticacore_windows/build.
+- Lots of project reorganization to allow things such as documentation or the dummy _ba.py module to be rebuilt from the public repo.
+- Added network flood attack mitigation.
 
 ### 1.6.3 (20366)
 - Telnet access works again for gui builds without requiring a password (access must still be granted via the gui).
diff --git a/src/ballistica/ballistica.cc b/src/ballistica/ballistica.cc
index 01ff48f8..f634182c 100644
--- a/src/ballistica/ballistica.cc
+++ b/src/ballistica/ballistica.cc
@@ -21,7 +21,7 @@
 namespace ballistica {
 
 // These are set automatically via script; don't modify them here.
-const int kAppBuildNumber = 20382;
+const int kAppBuildNumber = 20383;
 const char* kAppVersion = "1.6.4";
 
 // Our standalone globals.
diff --git a/src/ballistica/core/module.cc b/src/ballistica/core/module.cc
index 053ddaec..ca98383a 100644
--- a/src/ballistica/core/module.cc
+++ b/src/ballistica/core/module.cc
@@ -21,6 +21,16 @@ void Module::PushRunnable(Runnable* runnable) {
   }
 }
 
+auto Module::CheckPushSafety() -> bool {
+  if (std::this_thread::get_id() == thread()->thread_id()) {
+    // behave the same as the thread-message safety check for
+    // module messages.
+    return (runnables_.size() < kThreadMessageSafetyThreadhold);
+  } else {
+    return thread_->CheckPushModuleRunnableSafety();
+  }
+}
+
 Module::Module(std::string name_in, Thread* thread_in)
     : thread_(thread_in), name_(std::move(name_in)) {
   id_ = thread_->RegisterModule(name_, this);
diff --git a/src/ballistica/core/module.h b/src/ballistica/core/module.h
index 4bcccf1c..fb79f9e9 100644
--- a/src/ballistica/core/module.h
+++ b/src/ballistica/core/module.h
@@ -21,35 +21,43 @@ class Module {
   /// Pass a Runnable that has been allocated with new().
   /// There must be no existing strong refs to it.
   /// It will be owned and disposed of by the module from this point.
-  void PushRunnable(Runnable* runnable);
+  auto PushRunnable(Runnable* runnable) -> void;
 
   /// Convenience function to push a lambda as a runnable.
   template <typename F>
-  void PushCall(const F& lambda) {
+  auto PushCall(const F& lambda) -> void {
     PushRunnable(NewLambdaRunnableRaw(lambda));
   }
 
+  /// Returns true if there is plenty of buffer space available for
+  /// PushCall/PushRunnable; can be used to avoid buffer-full errors
+  /// by discarding non-essential calls. An example is calls scheduled
+  /// due to receiving unreliable network packets; without watching
+  /// buffer space it can be possible for an attacker to bring down
+  /// the app through a flood of packets.
+  auto CheckPushSafety() -> bool;
+
   /// Return the thread this module is running on.
   auto thread() const -> Thread* { return thread_; }
 
   virtual ~Module();
 
   /// Push a runnable from the same thread as the module.
-  void PushLocalRunnable(Runnable* runnable);
+  auto PushLocalRunnable(Runnable* runnable) -> void;
 
   /// Called for each module when its thread is about to be suspended
   /// (on platforms such as mobile).
-  virtual void HandleThreadPause() {}
+  virtual auto HandleThreadPause() -> void {}
 
   /// Called for each module when its thread is about to be resumed
   /// (on platforms such as mobile).
-  virtual void HandleThreadResume() {}
+  virtual auto HandleThreadResume() -> void {}
 
   /// Whether this module has pending runnables.
   auto has_pending_runnables() const -> bool { return !runnables_.empty(); }
 
   /// Used by the module's owner thread to let it do its thing.
-  void RunPendingRunnables();
+  auto RunPendingRunnables() -> void;
 
   auto name() const -> const std::string& { return name_; }
 
diff --git a/src/ballistica/core/thread.cc b/src/ballistica/core/thread.cc
index 453dcc0b..c9130e1a 100644
--- a/src/ballistica/core/thread.cc
+++ b/src/ballistica/core/thread.cc
@@ -473,13 +473,9 @@ void Thread::LogThreadMessageTally() {
           break;
       }
       if (m.type == ThreadMessage::Type::kRunnable) {
-        // Runnable* e;
-        // e = static_cast<Runnable*>(m.pval);
-        {
-          std::string m_name = g_platform->DemangleCXXSymbol(
-              typeid(*(static_cast<Runnable*>(m.pval))).name());
-          s += std::string(": ") + m_name;
-        }
+        std::string m_name = g_platform->DemangleCXXSymbol(
+            typeid(*(static_cast<Runnable*>(m.pval))).name());
+        s += std::string(": ") + m_name;
       }
       auto j = tally.find(s);
       if (j == tally.end()) {
diff --git a/src/ballistica/core/thread.h b/src/ballistica/core/thread.h
index cb940299..10ae2a3f 100644
--- a/src/ballistica/core/thread.h
+++ b/src/ballistica/core/thread.h
@@ -17,6 +17,8 @@
 
 namespace ballistica {
 
+const int kThreadMessageSafetyThreadhold{50};
+
 // A thread with a built-in event loop.
 class Thread {
  public:
@@ -162,6 +164,12 @@ class Thread {
         Thread::ThreadMessage::Type::kRunnable, module_index, runnable));
   }
 
+  auto CheckPushModuleRunnableSafety() -> bool {
+    // We first complain when we get to 1000 queued messages so
+    // let's consider things unsafe when we're halfway there.
+    return (thread_message_count_ < kThreadMessageSafetyThreadhold);
+  }
+
   // Register a timer to run on the thread.
   auto NewTimer(millisecs_t length, bool repeat,
                 const Object::Ref<Runnable>& runnable) -> Timer*;
diff --git a/tools/batools/project.py b/tools/batools/project.py
index 5e6d98b1..6c2ff34b 100755
--- a/tools/batools/project.py
+++ b/tools/batools/project.py
@@ -107,7 +107,7 @@ class Updater:
         # Docs checks/updates will only run if BA_ENABLE_DOCS_UPDATES=1
         # is set in the environment.
         if os.environ.get('BA_ENABLE_DOCS_UPDATES') == '1':
-            self._update_docs_md()
+            self._update_docs()
 
         if self._check:
             print(f'{Clr.BLU}Check-Builds: Everything up to date.{Clr.RST}')
@@ -673,7 +673,7 @@ class Updater:
         except Exception as exc:
             raise CleanError('Error checking/updating dummy module.') from exc
 
-    def _update_docs_md(self) -> None:
+    def _update_docs(self) -> None:
         # Update our docs/*.md files.
         # We need to do this near the end because it may run the cmake build
         # so its success may depend on the cmake build files having already
@@ -683,4 +683,4 @@ class Updater:
                            self._checkarglist,
                            check=True)
         except Exception as exc:
-            raise CleanError('Error checking/updating docs') from exc
+            raise CleanError('Error checking/updating docs.') from exc