Stack Tower — Free One-Tap Block Stacking Game
3D Stack Tower
Tap screen or press Spacebar to stack blocks perfectly
Stack the sliding blocks without missing. Consecutive perfect drops unleash combo bonuses!
How to play
While the block slides side to side, tap the screen (or click / press Space) to drop it. Only the part that overlaps the block below survives — the overhang is shaved off, so the tower narrows over time. Land it near dead-centre for a 'perfect': the width holds and your combo grows. If nothing overlaps, the run ends; your height is the score.
Origin & history
Stack Tower follows the timing-based block-stacking genre popularized by Ketchapp's 2016 hit 'Stack' — a one-tap mini arcade.
FAQ
How do I get a 'perfect'?
You get a perfect when the dropped block lines up almost exactly with the one below. A perfect keeps the width — it even grows back slightly — and consecutive perfects build a combo. Watch for the moment the block's left edge matches the edge below it.
Can I play with a keyboard?
Yes — press Space to drop the block on desktop, or tap the screen on mobile.
Is my best score saved?
Your best height is stored in the browser (localStorage) and shown next time. No account needed.