Are any of these servers what you are looking for?

Servers with "GunGame" in the name:
[Fr] CS-France.net----|Gungame One.Shot|----
ClanB ~ GunGame DeathMatch wWw.ClanB.eu
PGN Gungame Custom
[UA] | SERV-HOST.ORG | GunGame |p47/48
PGN Gungame Classic
QuadroX.eu GUNGAME/PAINTBALL Server
TERRA - Condition Zero #2 (GunGame)
[T]echnetic.net CZ|SoCal GunGame
_TcT_*GunGame*VeryGames.net
-={U.S.P}=- United Skilled Players - GunGame!