vTime

Used this app quite a few times. Doesn't crash, has great visuals and audio, has a thriving community, and I am yet to find any bugs. A few important things doing into it though: WMR does not come with a microphone, so you may need to buy one and figure out how to attach it to yourself. They also lack use of the controllers for making selections or pressing buttons, which is a very big piece of the platform. But it's better than any free app I have seen this far.

FPS TRUE FIRST PERSON!

Great app so interactive made a new friend!