Omino

SOURCE at gitlab

Controls: A left, D right, S  down, E rotate clockwise, Q rotate counter-clockwise

Press T a few times to create AI opponents and watch them go!

Supports keyboard and game controllers.

Based on NES/Gameboy versions, and the Tetris and Dr. Mario version for SNES.  Does not comply the the official Tetris guidelines exactly, but it's close enough.