[NKosmatos]

That would make a great 2D game... You’re given a floor plan at each level (with increased complexity/geometry) and you need to place the candle (light source) in a point where it will illuminate the whole floor.

[crawfordcomeaux]

I want to design floorplans with intentional shadow spaces.

[pbhjpbhj]

There's a good game called Lazer Maze (by ThinkFun) that is related, it concerns shining a directional Lazer though.