If you own an HTC Vive and a very large room in which to use it, then congratulations, because Unseen Diplomacy is one the best values you'll find for a mere 3 bucks. Sure, the game (if you can call it that), is extremely brief, but it's also a brilliant exercise in how impressive roomscale can be in a really huge room. Locomotion in this game is completely natural. The only thing you have to worry about is the damn cord, and pretty soon with wireless coming, this game will take on even greater meaning. Great demo material too.