diff --git a/src/api/audio.c b/src/api/audio.c
index d303acbd..aa2b4049 100644
--- a/src/api/audio.c
+++ b/src/api/audio.c
@@ -87,6 +87,7 @@ int l_lovrAudioNewSource(lua_State* L) {
   Source* source = lovrSourceCreate(stream);
   luax_pushtype(L, Source, source);
   lovrRelease(source);
+  lovrRelease(stream);
   return 1;
 }
 
diff --git a/src/api/graphics.c b/src/api/graphics.c
index d114d6af..a7248c28 100644
--- a/src/api/graphics.c
+++ b/src/api/graphics.c
@@ -823,6 +823,7 @@ int l_lovrGraphicsNewAnimator(lua_State* L) {
   Model* model = luax_checktype(L, 1, Model);
   Animator* animator = lovrAnimatorCreate(model->modelData);
   luax_pushtype(L, Animator, animator);
+  lovrRelease(animator);
   return 1;
 }
 
@@ -867,6 +868,7 @@ int l_lovrGraphicsNewCanvas(lua_State* L) {
 
   Canvas* canvas = lovrCanvasCreate(width, height, format, flags);
   luax_pushtype(L, Canvas, canvas);
+  lovrRelease(canvas);
   return 1;
 }
 
@@ -892,6 +894,7 @@ int l_lovrGraphicsNewFont(lua_State* L) {
 
   Font* font = lovrFontCreate(rasterizer);
   luax_pushtype(L, Font, font);
+  lovrRelease(rasterizer);
   lovrRelease(font);
   return 1;
 }
@@ -904,9 +907,10 @@ int l_lovrGraphicsNewMaterial(lua_State* L) {
   if (lua_type(L, index) == LUA_TSTRING) {
     Blob* blob = luax_readblob(L, index++, "Texture");
     TextureData* textureData = lovrTextureDataFromBlob(blob);
-    lovrRelease(blob);
     Texture* texture = lovrTextureCreate(TEXTURE_2D, &textureData, 1, true, true);
     lovrMaterialSetTexture(material, TEXTURE_DIFFUSE, texture);
+    lovrRelease(blob);
+    lovrRelease(textureData);
     lovrRelease(texture);
   } else if (lua_isuserdata(L, index)) {
     Texture* texture = luax_checktypeof(L, index, Texture);
@@ -920,6 +924,7 @@ int l_lovrGraphicsNewMaterial(lua_State* L) {
   }
 
   luax_pushtype(L, Material, material);
+  lovrRelease(material);
   return 1;
 }
 
@@ -1036,6 +1041,7 @@ int l_lovrGraphicsNewModel(lua_State* L) {
   }
 
   luax_pushtype(L, Model, model);
+  lovrRelease(modelData);
   lovrRelease(model);
   return 1;
 }
@@ -1112,6 +1118,7 @@ int l_lovrGraphicsNewTexture(lua_State* L) {
     lua_rawgeti(L, 1, i + 1);
     TextureData* textureData = luax_checktexturedata(L, -1);
     lovrTextureReplacePixels(texture, textureData, i);
+    lovrRelease(textureData);
     lua_pop(L, 1);
   }
 
diff --git a/src/api/types/controller.c b/src/api/types/controller.c
index 73be006b..0de71d37 100644
--- a/src/api/types/controller.c
+++ b/src/api/types/controller.c
@@ -86,6 +86,7 @@ int l_lovrControllerNewModel(lua_State* L) {
   if (modelData) {
     Model* model = lovrModelCreate(modelData);
     luax_pushtype(L, Model, model);
+    lovrRelease(modelData);
     lovrRelease(model);
   } else {
     lua_pushnil(L);
diff --git a/src/data/modelData.c b/src/data/modelData.c
index ac169775..e8f444c4 100644
--- a/src/data/modelData.c
+++ b/src/data/modelData.c
@@ -521,10 +521,15 @@ void lovrModelDataDestroy(void* ref) {
   for (int i = 0; i < modelData->nodeCount; i++) {
     vec_deinit(&modelData->nodes[i].children);
     vec_deinit(&modelData->nodes[i].primitives);
+    free((char*) modelData->nodes[i].name);
   }
 
   for (int i = 0; i < modelData->primitiveCount; i++) {
-    map_deinit(&modelData->primitives[i].boneMap);
+    ModelPrimitive* primitive = &modelData->primitives[i];
+    for (int j = 0; j < primitive->boneCount; j++) {
+      free((char*) primitive->bones[j].name);
+    }
+    map_deinit(&primitive->boneMap);
   }
 
   for (int i = 0; i < modelData->animationCount; i++) {
@@ -538,6 +543,7 @@ void lovrModelDataDestroy(void* ref) {
       vec_deinit(&channel->scaleKeyframes);
     }
     map_deinit(&animation->channels);
+    free((char*) animation->name);
   }
 
   for (int i = 0; i < modelData->textures.length; i++) {
diff --git a/src/filesystem/filesystem.c b/src/filesystem/filesystem.c
index 724cf430..5b6d8e31 100644
--- a/src/filesystem/filesystem.c
+++ b/src/filesystem/filesystem.c
@@ -206,29 +206,34 @@ void* lovrFilesystemRead(const char* path, size_t* bytesRead) {
   // Create file
   File* file = lovrFileCreate(path);
   if (!file) {
+    lovrRelease(file);
     return NULL;
   }
 
   // Open it
   if (lovrFileOpen(file, OPEN_READ)) {
+    lovrRelease(file);
     return NULL;
   }
 
   // Get file size
   size_t size = lovrFileGetSize(file);
   if (size == (unsigned int) -1) {
+    lovrRelease(file);
     return NULL;
   }
 
   // Allocate buffer
   void* data = malloc(size);
   if (!data) {
+    lovrRelease(file);
     return NULL;
   }
 
   // Perform read
   *bytesRead = lovrFileRead(file, data, size);
   lovrFileClose(file);
+  lovrRelease(file);
 
   // Make sure we got everything
   if (*bytesRead != (size_t) size) {
diff --git a/src/graphics/graphics.c b/src/graphics/graphics.c
index fc081ebb..a34f65e8 100644
--- a/src/graphics/graphics.c
+++ b/src/graphics/graphics.c
@@ -43,6 +43,10 @@ void lovrGraphicsDestroy() {
   if (!state.initialized) return;
   lovrGraphicsSetShader(NULL);
   lovrGraphicsSetFont(NULL);
+  lovrGraphicsSetCanvas(NULL, 0);
+  for (int i = 0; i < MAX_TEXTURES; i++) {
+    lovrRelease(state.textures[i]);
+  }
   for (int i = 0; i < DEFAULT_SHADER_COUNT; i++) {
     lovrRelease(state.defaultShaders[i]);
   }
@@ -367,6 +371,7 @@ Font* lovrGraphicsGetFont() {
     if (!state.defaultFont) {
       Rasterizer* rasterizer = lovrRasterizerCreate(NULL, 32);
       state.defaultFont = lovrFontCreate(rasterizer);
+      lovrRelease(rasterizer);
     }
 
     lovrGraphicsSetFont(state.defaultFont);
@@ -1159,6 +1164,7 @@ void lovrGraphicsBindTexture(Texture* texture, TextureType type, int slot) {
     if (!state.defaultTexture) {
       TextureData* textureData = lovrTextureDataGetBlank(1, 1, 0xff, FORMAT_RGBA);
       state.defaultTexture = lovrTextureCreate(TEXTURE_2D, &textureData, 1, true, false);
+      lovrRelease(textureData);
     }
 
     texture = state.defaultTexture;
diff --git a/src/main.c b/src/main.c
index 83f4f488..25242253 100644
--- a/src/main.c
+++ b/src/main.c
@@ -11,8 +11,11 @@
 
 static int errorCount = 0;
 
-static void destroy(int exitCode) {
+static void destroy(lua_State* L, int exitCode) {
   lovrDestroy();
+  free(lovrCatch);
+  lovrCatch = NULL;
+  lua_close(L);
   glfwTerminate();
   exit(exitCode);
 }
@@ -30,7 +33,7 @@ static void handleError(lua_State* L, const char* message) {
   } else {
     fprintf(stderr, "%s\n", message);
   }
-  destroy(1);
+  destroy(L, 1);
 }
 
 #ifdef EMSCRIPTEN
@@ -110,14 +113,14 @@ int main(int argc, char** argv) {
 
     // Failsafe in event that errhand throws
     if (errorCount++) {
-      destroy(1);
+      destroy(L, 1);
     }
 
     lua_pushcfunction(L, luax_getstack);
     lua_pushstring(L, lovrErrorMessage);
     lua_pcall(L, 1, 1, 0);
     handleError(L, lua_tostring(L, -1));
-    destroy(1);
+    destroy(L, 1);
   }
 
   // lovr.run()
@@ -132,14 +135,13 @@ int main(int argc, char** argv) {
   int exitCode = 0;
   int returnType = lua_type(L, -1);
   if (returnType == LUA_TSTRING && 0 == strcmp("restart", lua_tostring(L, -1))) {
+    lua_close(L);
     lovrDestroy();
     continue;
   }
 
   exitCode = luaL_optint(L, -1, 0);
-  free(lovrCatch);
-  lovrCatch = NULL;
-  destroy(exitCode);
+  destroy(L, exitCode);
 #endif
 
 #ifndef EMSCRIPTEN
diff --git a/src/physics/physics.c b/src/physics/physics.c
index c7c84900..34a04644 100644
--- a/src/physics/physics.c
+++ b/src/physics/physics.c
@@ -70,6 +70,7 @@ void lovrWorldDestroy(void* ref) {
   World* world = ref;
   lovrWorldDestroyData(world);
   vec_deinit(&world->overlaps);
+  map_deinit(&world->tags);
   free(world);
 }