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How get gp in crossfire

How get gp in crossfire
You play games, do daily missions, get badges, or trade zp into gp.

Improvement:
Do the abouve , BUT the fastest way to get GP without trading it with ZP is to play Mutation Mode or Ghost Mode because both Modes get you a lot of EXP and GP per round (Hero Mode : over 200 EXP and GP per round) and you don't have to repair your weapons !!!!!
Hope this helped :) !!