About Sky Stack
Sky Stack is a one-tap stacking game. A toy block slides back and forth above your tower; tap to drop it. Only the part that lands on the block below stays — the rest breaks off — so every sloppy drop makes the next block narrower. Line blocks up perfectly to keep them wide and climb above the city.
Tap to drop sliding toy blocks and build the tallest tower you can — only the part that lines up stays.
- GenreStacking Game
- LevelsEndless
- PlatformsPhone, tablet, computer
- PriceFree
- Updated
Screenshots
How to play Sky Stack
Mouse
Click anywhere to drop the sliding block.
Touch
Tap anywhere on the screen to drop the block.
Keyboard
Press Space, Enter or the down arrow to drop.
💡 Tips & tricks
- Watch the edge of the block, not the middle — it is easier to judge alignment.
- Blocks speed up as you climb, so start tapping a little earlier on high floors.
- Three perfect drops in a row widen the block again, which buys you room for mistakes.
- If a block becomes very thin, slow down and focus on one clean drop at a time.
✨ Features
- Endless tower with a speed curve that ramps smoothly
- Perfect-drop streaks that widen your blocks
- One-tap controls on phone, mouse or keyboard
- Your best score is saved in your browser
Sky Stack FAQ
How is the score counted?
Each block you land adds one point, and a perfect drop adds two.
What counts as a perfect drop?
Landing the block almost exactly on top of the one below. Perfect drops are not trimmed at all.
Can I continue after a miss?
Once per run you can watch an optional ad to place the missed block perfectly and keep stacking.