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Due to modifications enabling a proper gameplay experience on both Windows XP and Windows Vista systems, online play is possible only on servers without an anti-cheat protection system, including:
FREDZ Kit Mod Server: 82.73.219.179:31511 Player Limit: 9 mod: Kit
FREDZ Coop Mod Server: 82.73.219.179:31510 Player Limit: 9 mod: Coop
216.234.116.11:31519 Player Limit: 16 mod: KP4Ever's Godfather