The Playroom, a collection of augmented reality mini-games that take advantage of the PS4's PlayStation Camera, received a new addition today: Ninja Bots.
As the name suggests, you send your AR Bots into virtual ninja training. Using the DualShock 4 controller, you take control of your own Ninja AR Bot, avoiding traps while flicking ninja stars. The game is playable with up to four others.
If this doesn't encourage you go to out and purchase a PlayStation Camera, then I don't know what will.