🧱 Stack on your phone
Stack on a phone isn't a compromise — it's arguably the native experience. Touch is immediate (no mouse between you and the block), sessions fit wherever you're standing, and the browser version means your storage-starved phone gains a game without losing 300 MB.
Built touch-first
Every interaction is a tap — no virtual joysticks, no tiny buttons pretending your thumb is a cursor. Stack's test of precision under pressure translates perfectly to a fingertip, and duels are platform-fair: matched opponents face the same rounds under the same conditions, thumb vs thumb. iPhone Safari, Android Chrome, and everything modern in between just work.
Pocket-sized sessions
A full duel runs 30–40 seconds — genuinely shorter than a bus stop, elevator wait or kettle boil. There's no app to background-refresh, no notifications begging you back, no login to expire. Add it to your home screen from the browser menu if you want an icon; skip it if you don't. For the best waiting-room rotations, see quick games for waiting rooms.
How to play Stack
- A block slides side to side above a fixed base.
- Tap to drop it. One drop — no undo, no second run.
- Your score is the overlap: how much of your block landed on the base.
- Better alignment than your opponent takes the round.