Stack
Tap. Drop. Build higher.
Stack
Tap to drop each sliding block onto the tower below — any overhang gets sliced off, so line it up or the tower narrows fast.
About the Game
Stack is ZOQSY's build of the tap-to-drop block-stacking tower climber, and the seventh game built on the ZOQSY Engine. A block slides back and forth above your tower — tap to drop it onto the block below. Whatever doesn't overlap gets sliced clean off, so a perfect drop keeps your tower's width, while an off-center drop narrows it. The moving block speeds up as your tower grows, and if you miss the tower entirely, the run ends. Your best score is saved on this device.
How to Play
A block slides back and forth above your tower, speeding up a little with every block you place — tap the screen, press Space, Arrow Up, or W to drop it onto the block below. Whatever part of the falling block doesn't overlap the block underneath is sliced off and falls away, so a perfectly-aligned drop keeps your tower's full width while an off-center drop narrows it for every block after. Miss the tower completely — drop with zero overlap — and the run ends immediately. Press Escape or P (or the pause button in the top-right corner) to pause mid-run. Your best score is saved automatically on this device.
Controls
- Space / Arrow Up / WDrop the block
- TouchTap anywhere to drop the block
- Esc / PPause
Gameplay Tips
- Watch the block's edges, not its center — lining up an edge with the tower below is usually easier to judge than eyeballing the middle.
- A slightly-late tap is often safer than an early one — the block only needs to be touching the tower below, not perfectly centered, to keep the run going.
- The moving block speeds up as your tower grows, so widen your margin for error early rather than relying on reflexes that haven't caught up yet.
FAQ
Is Stack free to play?
Yes — Stack is completely free to play in your browser, with no purchase, subscription, or in-game currency.
Do I need to download anything to play?
No — Stack runs entirely in your browser. There's nothing to install.
Does Stack work on mobile?
Yes — tap anywhere on the screen to drop the block.
Is my best score saved?
Yes — your best score is saved on this device, so it's there the next time you play.
What happens if I don't align the block perfectly?
Whatever part of the block doesn't overlap the one below is sliced off, narrowing your tower for every block after. A perfect drop keeps the full width.
Are there achievements?
Yes — four achievements track real milestones: your first perfectly-aligned drop, reaching a score of 25 and 60 in a single run, and playing 50 runs total.
Can I pause mid-run?
Yes — press Escape, P, or the pause button in the corner of the game to pause and resume anytime.
Do I need to create an account?
No — there's no signup, login, or account of any kind.
