DOOM via checkboxes. Desktop Chrome/Edge only . By @healeycodes . Read the blog post: DOOM Rendered via Checkboxes . This is where the DooM screen should render. gettmilliseconds calls per second: 0 Total getmilliseconds calls: 0 DooM FPS: 0 (target: 35FPS) Total Frames drawn: 0 Browser Animation FPS: 0 (target: around 60FPS, depending on browser) Use ⏎ to start the game arrow keys ← ↑ ↓ → to move ctrl to shoot spacebar to open gates alt and arrow keys to strafe (if your browser does not handle these keys otherwise). Credits: DOOM via WebAssembly from Scratch Article , Checkbox library via Checkboxland . ...