Tenk.io is a huge tank-battle arena! Join a game to be entered into the war, with your own tank. All tanks auto-shoot, so you are able to play on mobile as well. All you have to do is use the W A S D keys on your keyboard to move your tank around, and your mouse cursor to aim your cannon simple as that! Try to dodge incoming projectiles while still shooting at your enemies. This is a bit tricky at first, but you get the hang of it. Good luck!