diff --git a/builder/builder.odin b/builder/builder.odin
index dcffc42..2d897b0 100644
--- a/builder/builder.odin
+++ b/builder/builder.odin
@@ -367,7 +367,7 @@ main :: proc() {
 					"-sWASM_BIGINT",
 					"-sWARN_ON_UNDEFINED_SYMBOLS=0",
 					"-sALLOW_MEMORY_GROWTH",
-					"-sASSERTIONS=2",
+					// "-sASSERTIONS=2",
 					"--shell-file",
 					"main_web/index_template.html",
 					"--preload-file",
diff --git a/common/name/name.odin b/common/name/name.odin
index d200979..73f63e4 100644
--- a/common/name/name.odin
+++ b/common/name/name.odin
@@ -8,7 +8,8 @@ import "core:sync"
 import "libs:tracy"
 
 // When enabled name globals will be initialized automatically
-NAME_STATIC_INIT :: #config(NAME_STATIC_INIT, true)
+// TODO: this breaks wasm, because it's trying to allocate something before we set up a working allocator...
+NAME_STATIC_INIT :: #config(NAME_STATIC_INIT, false)
 MAX_STATIC_NAMES :: #config(MAX_STATIC_NAMES, 1024)
 
 Name :: distinct u32
diff --git a/game/game.odin b/game/game.odin
index 8ea868e..84958de 100644
--- a/game/game.odin
+++ b/game/game.odin
@@ -126,6 +126,9 @@ world_init :: proc(world: ^World) {
 	physics.scene_init(&world.physics_scene, &g_mem.assetman)
 }
 copy_world :: proc(dst, src: ^World) {
+	if dst == src {
+		return
+	}
 	copy_track(&dst.track, &src.track)
 	physics.copy_physics_scene(&dst.physics_scene, &src.physics_scene)
 	scene_copy(&dst.main_scene, &src.main_scene)
@@ -1483,7 +1486,7 @@ game_init :: proc() {
 	assets.assetman_init(&g_mem.assetman)
 
 	editor_state_init(&g_mem.es, 100)
-	runtime_world_init(&g_mem.runtime_world, DEV_BUILD ? 100 : 2)
+	runtime_world_init(&g_mem.runtime_world, DEV_BUILD ? 100 : 1)
 
 	g_mem.default_font = rl.GetFontDefault()
 	ui.init(&g_mem.ui_context)
@@ -1546,3 +1549,7 @@ game_force_reload :: proc() -> bool {
 game_force_restart :: proc() -> bool {
 	return rl.IsKeyPressed(.F6)
 }
+
+game_parent_window_size_changed :: proc(w, h: int) {
+	rl.SetWindowSize(i32(w), i32(h))
+}
diff --git a/game/physics/collision/convex.odin b/game/physics/collision/convex.odin
index ffb76c4..f7d1ce2 100644
--- a/game/physics/collision/convex.odin
+++ b/game/physics/collision/convex.odin
@@ -5,6 +5,7 @@ import "core:container/bit_array"
 import "core:log"
 import "core:math"
 import lg "core:math/linalg"
+import "core:sync"
 import "game:halfedge"
 import rl "libs:raylib"
 import "libs:raylib/rlgl"
@@ -37,8 +38,10 @@ box_mesh: Convex
 @(private = "file")
 triangle_mesh: Convex
 
-@(init)
-init_box_mesh :: proc() {
+@(private = "file")
+init_globals_once: sync.Once
+
+init_globals :: proc() {
 	box_mesh = Convex(halfedge.mesh_from_vertex_index_list(box_corners_norm[:], box_indices[:], 4))
 
 	triangle_mesh = Convex(
@@ -50,14 +53,16 @@ init_box_mesh :: proc() {
 	)
 }
 
-@(fini)
-deinit_box_mesh :: proc() {
-	delete(box_mesh.vertices)
-	delete(box_mesh.faces)
-	delete(box_mesh.edges)
-}
+// @(fini)
+// deinit_box_mesh :: proc() {
+// 	delete(box_mesh.vertices)
+// 	delete(box_mesh.faces)
+// 	delete(box_mesh.edges)
+// }
 
 box_to_convex :: proc(box: Box, allocator := context.allocator) -> (convex: Convex) {
+	sync.once_do(&init_globals_once, init_globals)
+
 	convex = halfedge.copy_mesh(box_mesh, allocator)
 
 	for &v in convex.vertices {
@@ -73,6 +78,8 @@ double_sided_triangle_to_convex :: proc(
 ) -> (
 	convex: Convex,
 ) {
+	sync.once_do(&init_globals_once, init_globals)
+
 	convex = halfedge.copy_mesh(triangle_mesh, allocator)
 	convex.vertices[0].pos = tri[0]
 	convex.vertices[1].pos = tri[1]
diff --git a/game/physics/scene.odin b/game/physics/scene.odin
index a512193..9c8a819 100644
--- a/game/physics/scene.odin
+++ b/game/physics/scene.odin
@@ -121,15 +121,21 @@ Sim_State :: struct {
 	dynamic_tlas:                              Dynamic_TLAS,
 }
 
+DEV_BUILD :: #config(DEV, false)
+NUM_SIM_STATES :: 2 when DEV_BUILD else 1
+
 Scene :: struct {
 	assetman:               ^assets.Asset_Manager,
-	simulation_states:      [2]Sim_State,
+	simulation_states:      [NUM_SIM_STATES]Sim_State,
 	simulation_state_index: i32,
 	solver_state:           Solver_State,
 }
 
 // Copy current state to next
 copy_sim_state :: proc(dst: ^Sim_State, src: ^Sim_State) {
+	if dst == src {
+		return
+	}
 	tracy.Zone()
 	convex_container_reconcile(&src.convex_container)
 
@@ -176,8 +182,9 @@ copy_physics_scene :: proc(dst, src: ^Scene) {
 	dst.assetman = src.assetman
 	dst.simulation_state_index = src.simulation_state_index
 
-	copy_sim_state(&dst.simulation_states[0], &src.simulation_states[0])
-	copy_sim_state(&dst.simulation_states[1], &src.simulation_states[1])
+	for i in 0 ..< NUM_SIM_STATES {
+		copy_sim_state(&dst.simulation_states[i], &src.simulation_states[i])
+	}
 	copy_solver_state(&dst.solver_state, &src.solver_state)
 }
 
diff --git a/main_web/main_web.odin b/main_web/main_web.odin
index 10d5c54..b973e12 100644
--- a/main_web/main_web.odin
+++ b/main_web/main_web.odin
@@ -25,7 +25,7 @@ main_start :: proc "c" () {
 	// Since we now use js_wasm32 we should be able to remove this and use
 	// context.logger = log.create_console_logger(). However, that one produces
 	// extra newlines on web. So it's a bug in that core lib.
-	// context.logger = create_emscripten_logger()
+	context.logger = create_emscripten_logger()
 
 	web_context = context
 
@@ -49,5 +49,5 @@ main_end :: proc "c" () {
 @(export)
 web_window_size_changed :: proc "c" (w: c.int, h: c.int) {
 	context = web_context
-	// game.game_parent_window_size_changed(int(w), int(h))
+	game.game_parent_window_size_changed(int(w), int(h))
 }