diff --git a/src/activities/overworld/mod.rs b/src/activities/overworld/mod.rs
index d938547..f03766d 100644
--- a/src/activities/overworld/mod.rs
+++ b/src/activities/overworld/mod.rs
@@ -19,7 +19,9 @@ pub fn draw(state: &crate::State, _engine: &comfy::EngineContext<'_>) {
 				ZLayer::MapMax - i,
 				Vec2::ONE
 			);
-			draw_rect_outline(coords.as_vec2(), Vec2::ONE, 0.1, RED, 10);
+			if state.dev {
+				draw_rect_outline(coords.as_vec2(), Vec2::ONE, 0.1, RED, 10);
+			}
 		}
 	}
 	draw_circle(state.ghost.overworld_pos, 0.5, RED, ZLayer::Ghost.into());
diff --git a/src/main.rs b/src/main.rs
index eb812f2..e8b329f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,17 +10,31 @@ mod activities;
 mod game;
 mod ui;
 
+use std::env::var;
+
 use self::{
 	activities::{house::HouseState, overworld::worldgen::Overworld, Activity},
 	game::Ghost
 };
 use comfy::{
-	etagere::euclid::default, init_game_config, pollster, run_comfy_main_async,
-	DevConfig, EngineContext, EngineState, GameConfig, GameLoop, HashMap, IVec2
+	init_game_config, pollster, run_comfy_main_async, DevConfig, EngineContext,
+	EngineState, GameConfig, GameLoop, HashMap, IVec2
 };
 
 const GAME_NAME: &str = "Powercreep";
 
+/// true if devtools should be enable
+fn dev_from_env() -> bool {
+	match var("DEV").as_ref().map(|f| f.as_str()) {
+		Ok("false") => false,
+		Ok("true") => true,
+		#[cfg(debug_assertions)]
+		_ => true,
+		#[cfg(not(debug_assertions))]
+		_ => false
+	}
+}
+
 #[derive(Debug, Default)]
 struct State {
 	setup_called: bool,
@@ -28,7 +42,9 @@ struct State {
 	ghost: Ghost,
 	overworld: Overworld,
 	houses: HashMap<IVec2, HouseState>,
-	score: f32
+	score: f32,
+	/// show dev tools
+	dev: bool
 }
 
 impl State {
@@ -52,7 +68,10 @@ impl State {
 
 impl GameLoop for State {
 	fn new(_c: &mut EngineState) -> Self {
-		Self::default()
+		Self {
+			dev: dev_from_env(),
+			..Default::default()
+		}
 	}
 
 	fn update(&mut self, ctx: &mut EngineContext<'_>) {
@@ -67,15 +86,19 @@ impl GameLoop for State {
 }
 
 fn config(config: GameConfig) -> GameConfig {
-	let dev = DevConfig {
-		#[cfg(debug_assertions)]
-		show_fps: true,
-		..Default::default()
+	let dev = if dev_from_env() {
+		DevConfig {
+			show_fps: true,
+			..Default::default()
+		}
+	} else {
+		Default::default()
 	};
 	GameConfig {
 		tonemapping_enabled: true,
 		dev,
-		..Default::default()
+		target_framerate: 165,
+		..config
 	}
 }