Stack Drop
A block slides left and right above a tower. Tap to drop it. Whatever's hanging off the edge of the block below gets sliced off and falls away. Stack as high as you can before your block gets too small to land.
What it is
Stack Drop is a one-input precision game. A horizontal block slides left and right at constant speed above the top of a growing tower. You decide when to release it. If the released block overlaps the one below, the overlapping portion stays — and that overlap becomes the size of the next block. The portion hanging off is removed, falls away, and is gone forever. The tower's footprint shrinks every imperfect drop. Eventually the block is too narrow to land at all, and the run ends.
How to play
- The block slides. Left to right, right to left. Constant speed.
- Tap to drop. SPACE on desktop, tap on the canvas on mobile.
- Perfect drop: centred on the previous block. The block stays full size. You'd be surprised how often you get one.
- Imperfect drop: the overhang is shaved. Next block is smaller.
- Miss completely: game over.
The trick
New players try to drop "near the middle". That's how the tower shrinks fastest. The actual trick is to commit to either left edge or right edge, alternately: this keeps the tower from drifting and gives each drop a clean target. The block speed ramps subtly with height, so the timing window narrows; by height 25 you're working in a few-frames-wide window, which is why human reaction time alone won't get you to 30. You need to drop based on extrapolation, not observation — the block has already left your reflex window by the time you "see" it in the right place.
What this scored well on
- Perfect-drop generosity. Our "perfect" tolerance is 3 pixels at the start, slightly wider than most clones. We wanted players to occasionally land a perfect by feel, not by frame-counting.
- Visible state. The overhang flies off downward in a one-frame slice; you can see exactly how much you lost. No "magic correction".
- Tower depth visualisation. As the tower grows, the camera pans down so the latest block stays roughly in the middle of the canvas. Old blocks scroll off the bottom but the count goes up.
What it gets wrong
Stack Drop has only one win condition (stack high) and one loss condition (miss completely). That's the whole game. Some testers wanted score multipliers for streaks of perfect drops; we tried them, they made the game feel like grinding rather than playing, and we cut them. The result is a more honest game and a less "rewarding" one in the dopamine-loop sense; we think that's the right trade.
Who it's for
Stack Drop is for anyone who appreciates the kind of arcade-aisle minimalism this whole catalogue leans into. One input. One score. A target visible at all times. You'd play this on a payphone if it could run.
Where we'd point you next
If you liked the precision-timing rhythm, try Pulse Lock (#01). If you liked the one-input simplicity, watch for Trail Drag (#13 — single-finger line tracing) coming in the second batch.
Released · 12 May 2026 · Editor's score 4.3 / 5 · Reviewed by Bill