Tetrada Arcade

Choose a version and jump in. The mirror mode adds a Space ability that flips J/L and S/Z pieces into their mirrored form.

Tetrada Classic

The standard version of the game with the updated mobile swipe handling.

Press Space or tap Mirror to swap J with L and S with Z while the current piece is falling.

Choose how many upcoming pieces to reveal, from 0 all the way up to 10, and practice with different lookahead depth.

Watch the computer play on its own using only the current piece, choosing the best legal placement with no next-piece preview.

A focused test mode that spawns only Z pieces for strategy and pattern experiments.