Warning: If you try to play a first-person shooter on a touchscreen against opponents who have mice and keyboards, you will die. Quickly, repeatedly, with trash talk and/or teabagging a high probability. That said, if you're keen to give it a try, popular Facebook FPS UberStrike is now available on the Google Play Store. The popular free-to-play game has amassed over a million likes on Facebook, which serves as the browser-based platform for PC gamers. According to the game's description, players on the PC, Android and iOS can battle each other in real time thanks to the Unity3D platform.
The graphics and gameplay look pretty basic - UberStrike seems to have the simple and fast gameplay of Quake 3 in a slightly less aggressive package.