How to play
A block slides back and forth above your tower. Tap, click, or press Space to drop it onto the block below. Anything hanging over the edge gets sliced off, so every sloppy drop leaves you a narrower target. Land within a few pixels of center and the drop counts as perfect, keeping full width. The run ends when you miss outright or your block gets shaved too thin to land on.
Tips
- Track the block's leading edge, not its middle. Edges are what get sliced.
- A perfect drop snaps the block into line with the one below, quietly undoing small drift from earlier rounds.
- Each new block enters from the opposite side, so move your eyes to the other edge after every drop.
- Speed climbs with every block and tops out around block 50. If you survive that long, the rhythm stays steady.
The physics of a perfect drop
Every block that hangs over the edge of the one below is sliced off, so the tower can only ever stay the same width or shrink. That single rule is what makes Stack tense: an early sloppy drop does not cost you now, it costs you on every drop for the rest of the run, because the target keeps getting narrower. A drop within a few pixels of dead centre counts as perfect and keeps the full width, and a chain of perfects is the only way to hold the tower together for a long run.
The block slides back and forth at a steady speed, so the skill is a rhythm one. Rather than reacting to where the block is, good players learn its period and tap at the moment they know it will be centred.
Stacking higher
- Watch the leading edge, not the block. Line up the edge that is moving towards the tower and the rest follows.
- Find the rhythm. The block's sweep is regular, so count it and tap on the beat rather than chasing the image.
- A narrow tower is not lost. Perfect drops from a narrow base are easier than they look, because there is less block to misjudge.
- Do not tap early out of nerves. The block will come back; a late tap is not penalised any more than an early one.
- Space bar works on desktop and is steadier than a mouse click for timing.
-FAQ
Common questions
What counts as a perfect drop?
Landing within a few pixels of the centre of the block below. A perfect drop keeps the full width instead of slicing anything off.
Can the tower get wider again?
No. Anything that overhangs is removed, so the width can only stay the same or shrink. That is why early accuracy matters so much.
What ends the run?
Missing the tower entirely, or your block becoming too thin to land on.
-FAQ