Block Tower is a stacking skill game where each new block swings on a pendulum arc from alternating sides — left-to-right on even layers, right-to-left on odd layers. You tap or click at the precise moment to drop the block onto the stack. The portion of the dropped block that hangs over the edge is sliced off; the remaining piece becomes the new platform for the next block. Cut too much and the platform shrinks until blocks fall off entirely and the run ends.
Early blocks are wide and forgiving: even an imprecise tap leaves a respectable platform. As your tower height increases, the pendulum arc narrows and speeds up. By layer 15 the swing speed is 40% faster than layer 1, and by layer 25 the swing completes a full arc every 1.8 seconds. The pressure compounds because the platform itself narrows with each imperfect placement — a run with three sloppy taps in a row produces a platform half the starting width, giving the pendulum less margin to land on.
Perfect drops — where the falling block aligns exactly with the platform edge within a ±2-pixel tolerance — earn a "Perfect" bonus that adds 2px width back to the platform, rewarding consistent precision with a slowly growing base. This mechanic makes it possible to actually improve your tower width over time if you chain consecutive perfects, which becomes the skill ceiling that separates casual players from leaderboard chasers. The game is mobile-first — tap the screen to drop, and the tower fills the phone screen vertically for the most satisfying view.
Most players focus on the block's centre mass. Watch the trailing edge instead — that's the edge that determines how much gets sliced. If the trailing edge clears the platform, the cut is minimal regardless of where the centre lands.
The pendulum is consistent — same speed, same arc, same period for a given layer. Count the beats instead of reacting to visual position. Once you internalise the rhythm, drops feel like a metronome exercise rather than a reflex test.
A "Perfect" that adds 2px is worthless if chasing it costs you a 10px overhang. Aim for a conservative 5px overhang on each drop — small, consistent cuts keep the platform stable far longer than aggressive perfect-hunting.