World of Tanks Blitz is a free-to-play 3D cross-platform strategy MMO set in World War II that allows you to take control of a moving tank which you can customise and have battles with up to 14 players per match. Although based on its popular PC counterpart the mobile version lacks many of the vehicles and most modes of the PC version.
Features in World of Tanks Blitz includes:
7-vs-7 Combat
Over 90 Armoured Vehicles
Quick Matchmaking
Clans and Platoons
The game is available free on iOS and Android