BMExt-GLtron is based on GLtron and brings two significal changes:
[*] Originally if you die in the game you have to wait until the others are done playing, which can sometimes take several mintues. It is more fun if you respawn immediately after death, in a relatively open space.
[*] Wrap-around playing field edges significantly alter the strategy of the game. (Technically, the playing field becomes a toroid in this case.)

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