Tetris
Pieces are keys: plus, times, divide and equals. A full row clears like a calculator result.
This is classic Tetris in a keypad skin, not a Tetris, Inc. licence. Also try Snake and Minesweeper.
Well
SCORE 0 LINES 0 T3
Result
Start a game. A full row is equals and adds to the LCD.
How to play
- Pick a well and a tempo, then Start. Key-shaped pieces fall in the grid you chose.
- Steer with arrows, WASD, a click on a column or a swipe. Up or a tap rotates. Space or = hard-drops.
- Clear full rows. Overflow on the top ends the run.
Formula
score += [0, 100, 300, 500, 800][cleared rows] × level. level = 1 + floor(lines / 10). Tempo 1–6 only sets fall speed. Wells: 8×16, 10×20, 12×20, 10×24 and 14×22.
Frequently asked questions
How is the score counted?
A full row clears like equals. One row 100, two 300, three 500, four 800, times the line level. Fall speed is a separate setting from 1 to 6. Wells: 8×16, 10×20, 12×20, 10×24 and 14×22.
How do I steer?
Arrows or WASD. Hold left or right and the piece keeps sliding. Click or drag a column to move it. A tap or Up rotates. Space or equals hard-drops.
What do the marks on the pieces mean?
They are keypad skin: 1, 0, plus, times, divide, minus and equals. They do not change the formula, only the look.
Does the score leave the browser?
No. The record stays in localStorage.
Knowledge sources
This is play on a calculator keypad, not sports training and not a bet.
Page updated in 2026.