The player uses the ChromaGun, a paint-shooting weapon, to colorize walls and floating spherical robots, called Worker Droids.

These Worker Droids are attracted to walls of the same color and will move towards them.

The player's objective is to solve puzzles by cleverly rearranging Worker Droids, changing their colors, and guiding them to door-opening triggers, switches or electrified tiles.

The player can shoot paint in the primary colors red, blue and yellow using the ChromaGun.

Mixing more than two different colors will result in black, which Worker Droids are not attracted to.