Stack Up

A block slides back and forth above your tower. Tap to drop it. Any part that hangs over the edge is cut off, so the tower gets narrower with every sloppy drop. Miss completely and the game ends.

Stack Up

Tap, click or press Space to drop the sliding block onto the tower.

How to play Stack Up

Each new block slides in from alternating sides. Tap when it lines up with the block below. The overlapping part stays on the tower and the rest falls away, so your next block is only as wide as what you kept. Land a drop almost exactly on top for a perfect drop. Three perfect drops in a row widen the tower slightly. The blocks speed up as the tower grows.

Controls

ActionKeyboardMouse / touch
Drop the blockSpaceClick or tap the playfield

Tips

  • Watch the edge, not the whole block. Line up the leading edge with the tower's edge.
  • Tap slightly early. Most people react a fraction late, especially at higher speeds.
  • Protect your width. A narrow tower is much harder to hit, so early accuracy pays off later.

About this game

Stacking games test timing more than speed. Stack Up is drawn on an HTML5 canvas with a colour that shifts with every level of the tower, and it saves your best height in your browser.

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