What i am putting in this comment is a few ideas of what can be put in or on the game
1: armor like say,the more armor put on the tank the less points the other team gets,but like wise the less xp you get
2 the ability to upgrade guns like ex:75mm,105,150mm guns
3 the ability to do a free-for-all mode
4 last of all the ability to move for a few seconds after you give off your shot
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