Stack Up
Blocks slide back and forth — drop them at the right moment. Overhangs get sliced off.
About the game
Stack Up is a timing game: a block slides across the top of your tower and you tap to drop it. Only the overlap stays, so each floor gets harder to land. Perfect streaks widen the top again — it’s easy to say “one more try”.
How to play
- A block slides above the tower; tap to drop it on top.
- Only the part overlapping the floor below stays — the rest falls off, so the tower narrows.
- A near-exact drop is a Perfect. Three or more in a row widen the block slightly.
- Miss completely and the game ends. +1 per floor, +2 during a perfect streak.
Controls
Click, tap, Space or Enter to drop the block.
Tips for a high score
- Watch the edge of the floor below, not the moving block.
- As the speed rises, get ready as soon as the block appears.
- Chain perfects — streaks win back lost width.
FAQ
- How do you play Stack Up?
- A block slides above the tower; tap to drop it on top. Only the part overlapping the floor below stays — the rest falls off, so the tower narrows. A near-exact drop is a Perfect. Three or more in a row widen the block slightly. Miss completely and the game ends. +1 per floor, +2 during a perfect streak.
- What are the controls?
- Click, tap, Space or Enter to drop the block.
- Any tips for Stack Up?
- Watch the edge of the floor below, not the moving block. As the speed rises, get ready as soon as the block appears. Chain perfects — streaks win back lost width.
- Do I need to download or sign up?
- No. Stack Up runs in your browser on phone or desktop for free. Your best score is saved locally in your browser.