There are currently 7 official versions of GunZ, 2 of which are available internationally, 4 of which are available only in its localised regions and 1 which is still unreleased:
- International ("IGunZ") - (Closed) Hosted by MAIET Entertainment. Cannot be accessed from any regions with specialized servers.
- Korea ("KGunZ") - Sponsored by Netmarble.
- Japan ("GunZwei") - Sponsored by Gameon.
- India ("InGunZ") - (Bulok) Sponsored by Level Up!.
- Brazil ("BGunZ") - Sponsored by Level Up!. It was pay-to-play until recently.
- North America ("ijjiGunZ") - Sponsored by NHN USA via their game portal Ijji.
- Philippines ("PGunZ") - (Unreleased) Sponsored by Level Up!.