Colors of V

A vector dungeon set on a monochrome tube and lit by three subtractive colour gels. Drop a gel and half the room stops existing: a wall you cannot see is not solid, while an enemy you cannot see is frozen and cannot be shot. The colour channel is the collision layer, so sight and physics never drift apart.

What you cannot see cannot see you. Invisible does not mean hidden; it means absent. A wall you cannot see is not solid, so you can walk straight through it. A trap you cannot see cannot cut you. An enemy you cannot see is frozen and cannot be shot. In this puzzle game, visibility and collision share the same channel, so they can never disagree. Every gel swap rewrites the floor plan beneath your feet.