A free app for Android, by Alien King.

Enduro Motocross is the best real-time 3D game on Google Play. It offers over 50 real-time multiplayer environments and more than 120 bikes, including those from KTM, BMW, Honda, Suzuki, Yamaha, and more! You can choose to play as a solo player or as a member of a player group. The more players in a group, the more complex the game becomes. You can compete in online tournaments with your friends from your Google Play Account or play with players worldwide. 

You can compete with the rest of the world and win prizes and trophies. The main goal of online tournaments is to get as far as possible to get as many rewards as possible. The rewards include new bikes, maps, the ability to rank up, and others. All these achievements can be obtained by playing online and offline modes.

  The reward for the most valuable player in the final phase is a BMW bike.