"Pimp My Water Gun" is a tile-based 2D squirt gun builder. The player selects stock-parts from a library and arranges them in "builds" on a canvas. Your aim is to score a high "Coolness" rating. Parts and their logics have a meaning within your build. Reasonable designs with a high degree of customization beat uninspired builds. It's a "kitbashing" simulator and a creative challenge.