The Lab is a game created by Valve specifically for virtual reality. It is a mini game collection that sees the player adopting a robot dog, fixing a robot, defending a castle, etc.
Pro Amazingly fun collection of mini games and experiences
The lab is a collection of a bunch of very fun mini games. You get to use a bow and arrow to defend your castle against waves of enemies, control a fighter drone in a classic arcade style shoot-em-up, repair a Aperture science robot, explore the secret shop from Dota and more. Although each game is simple, they are all very well executed and make fantastic use of VR mechanics.
Con More a proof of concept than a full fledged game
The mini games are quite short and will not provide a whole lot of entertainment. The purpose of this title is to showcase what room scale VR is capable of (which it does well), but when considered as a game for those interested in gaming it falls a bit short.