Stack Up: a free block stacking game

Stack Up is a free block stacking game for your browser. A block slides back and forth, and you drop it onto the tower. Line it up well and the tower grows.
Miss a little and the overhang shears off, so your tower gets narrower. It is a one-tap game with a lot of tension.
Also called: stack the blocks game, tower building game, one tap stacking game
How to play
- A block slides across the top of the tower.
- Press A, or tap the screen, to drop it.
- Whatever hangs over the edge shears off.
- Keep dropping blocks cleanly to build high.
- If you miss the tower completely, it is over.
Keyboard: arrows, A and B. Phone: the on-screen pad.
Tips
- Drop when the block is right over the tower, not when it is nearing it.
- Try for clean drops. They keep the tower wide.
- Do not rush. Wait for the slide.
Questions
Is Stack Up free, and do I need to download anything?
Yes, it is free. Stack Up plays right in your web browser with no download, no sign-up and no ads on the site. Just open the page and start.
Can I play Stack Up on my phone or tablet?
Yes. On a phone or tablet, an on-screen pad with arrows and A and B buttons shows up under the game. On a computer, use the arrow keys and the A and B keys.
What happens if I drop a block off to the side?
The part that hangs over shears off, and the tower gets narrower.
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