All three play the identical game — only the letters change.
Keyboard: ←/A takes the left letter, →/D the right one, space or ↓ aligns both. These menus drive from the arrows and WASD too.
The columns fall on their own clock, so reaching the hit line is the deadline. Everywhere else in this game the question is which move is worth most; here it's also whether you can read it in time. Pick how hard, then play a strand.