- How do you play Stack Tower?
- A block slides back and forth above your tower. Click, tap, or press Space to drop it onto the block below. Whatever overlaps stays; whatever misses falls away. Line up an almost-perfect drop and your block keeps its full width instead of shrinking, building a combo. Miss completely and the run ends.
- What are the controls?
- Click or tap anywhere on the board, or press the spacebar, to drop the moving block. The same action starts a fresh run from the title screen and restarts after Game Over. A Pause button and Restart button sit next to the board on any device.
- Does the game get harder as I go?
- Yes. The moving block speeds up the higher your tower gets, and every imperfect drop trims the block a little narrower — so later placements demand tighter timing on a smaller target.
- What's a "perfect" drop?
- Lining the moving block up almost exactly with the block below counts as perfect: your width is preserved instead of being cut down, and consecutive perfects build a combo streak with a small score bonus.
- Is my high score saved?
- Your personal best is stored locally in your own browser, so it's there next time you visit on the same device. It never leaves your machine — there's no account and no server-side leaderboard.
- Is it really free, and does it work offline?
- It's completely free with no sign-up, no ads to click through, and nothing to install. The whole game runs in your browser on a canvas, so once the page has loaded it keeps working even with a flaky connection.