There are very few VR games currently available that work well, and this is one of em. Nice classic arcade shooter action with excellent VR implementation for google cardboard. If you are having trouble finding VR games that produce a clean image, look no further. This game does not give the terrible double image that you cant focus on (using my AT&T cardboard viewer) and it is compatible with viewers that have a button and also with those that dont. Devs: Keep up the good work! Looking forward to improvement updates. I have 1 bug to report: If I switch off SBS VR mode, the display freezes although when moving my device around I can still hear the click sounds that indicate Im focusing on buttons. I had to do this and guess to re-enable VR mode. Im using an iphone 5s with IOS9.2.1