Match - a - block

Controls in-game

Keyboard:

Use arrow keys or WASD to move the cursor 

While holding the space bar/Z key/enter key you can move the blocks on the same axis as the cursor

Controller:

Use D-pad or left joystick to move the cursor

While holding any of the ABXY or ⭘□△╳ buttons you can move the blocks on the same axis as the cursor

Mobile/mouse only:

Not supported