How to play:
Every tanks has 4 "blood lights": D1, D2,D3,D4.Two players play 2 tankes with different frequencies:
If your are hit by opponents' gun for 3 times, or by the shell for 1 time,you will lose 1 "blood",the "blood light" will shut down. If you lose 3 "blood",you will lose the game,you need to restart the tank to open a new game.