Wouldn't it be weird if you looked into a mirror and saw things that weren't in your world? That's the stuff of noitcelfeR 2, a cool puzzle platformer by Wix Games, where some obstacles can only be seen in the reflection beneath you. It's a simple but high concept, and though a little taxing on the CPU, it's done quite well.

Reflections is a classic game of lasers and mirrors (and bombs!). The objective of the game is to position the mirrors and lenses provided such that the laser passes through and illuminates each of the light bulbs. An easy game to pick and get started with, but later levels present increased difficulty and more complex lens types.