BattleTanks is the best 2D action based on FLASH. The game is very similar to World of Tanks and TankiOnline ...
The game has a garage where you can buy different tanks, there are still crystals, there are still titles that you need to get for points. With each new name in the garage open new tanks.
Unfortunately, there is no multiplayer in the game. The game has several modes, such as "Team Battle", "Battle of Mammoths", "Goldfall" and "YOU MAMMOT!".