Fieldway — a fast 2D game maker
One sentence in, a playable game out. Fieldway builds small 2D browser games — HTML, CSS and JS — right on the page: play them instantly in a sandboxed preview, ask for changes in plain words (“make it harder”, “add sound”), then download the files. It can even check the web for mechanics worth borrowing. No installs, no keys, no sign-up — and it only ever talks game-making.