A falling-block puzzle where blocks carry numbers and rows are cleared by subtraction.
How to Play
Stack falling pieces to fill rows
When a row is full, the smallest number in that row is subtracted from all blocks
Blocks reduced to zero vanish — the stack above falls down
Chain reactions and multi-row clears earn bonus points
Tap NEW GAME to start, PAUSE to pause
Use NUMS to cycle block number range (1–2, 1–3, 1–4)
Controls
← → — move piece left / right
↺ — rotate piece
▼ — soft drop (speed up fall)
Swipe on the board for quick gestures
Frequently Asked Questions
The game seems frozen after a row clears.
That's intentional — the subtraction and cascade animations play in slow motion so you can see what happened. The game resumes automatically.
What does the NUMS button do?
It cycles the maximum block number between 1–2, 1–3, and 1–4. Higher numbers make rows harder to clear but earn more points.
How is the score calculated?
Score is based on the number of rows cleared, the level, and the subtraction value. Multi-row clears and larger subtractions earn exponentially more points.
Contact
Having an issue not covered here? Open a GitHub issue at: GitHub issues