Fit, clear, repeat
Fit four-square pieces into a 10 × 20 board. Full rows clear. Seven shapes arrive in shuffled bags; hold once per piece and preview the next three. The outlined ghost shows the landing. Marathon speeds up every ten lines. Sprint finishes at 40 lines and counts active playing time.
Controls and scoring
Arrows move and soft drop. Up or X rotates clockwise, Z counterclockwise, C holds, Space drops and P pauses solo. Touch controls are labeled; game controls are in English. Clear one, two, three or four rows for 100, 300, 500 or 800 × level, plus consecutive-clear bonuses. Soft drop earns one point per row; hard drop earns two. Landing delay is half a second, with at most fifteen resets. Rotation uses simple wall/floor kicks and no special spin bonuses.
Play together, finish together
Online Relay is a private synchronized game for two players. Alternate pieces on one shared board and clear 40 lines together. There is no gravity timer. Adjustments are local previews until Drop; the server validates the placement. Either player can end the Relay; the host starts, rematches or closes the room. Online results stay in the room. Solo runs are not saved; device best scores persist. Solo practice submissions are capped at 100,000.
An original genre adaptation
Stackfall has its own artwork and rules, inspired by the falling-block genre popularized by Tetris. It is not an official Tetris product.
A little inspiration.
Now make it your own.
