GEM (itch)

GEM is a game where you move blocks around to match a pattern

WASD (+ZQ) - Move blocks / Set colors

Arrow Keys - Move cursor / Set size and mode

Spacebar - Highlight matching blocks

E - Toggle shaking

Escape - Go back to previous screen

Set the number of colors, the size and gamemode to your preference

There are 3 different modes:

Shifter

Rotater

Swapper