Fallout 3 online mod (need testers)

Vault-Tec Multiplayer Mod ("VaultMP") is a multiplayer mod for the PC versions of Bethesda's award-winning role-playing games Fallout 3 and Fallout: New Vegas. It's currently in development, but is going to support the following:

Dedicated server, MasterServer and client including a server browser
Syncing of movement, actions / animations and AI
In-game GUI overlay for chatting
Supporting DLCs as well as Fallout user mods
Server-side scripting to define gameplay rules

The main goal is to enable players to roam the open worlds of the wastelands and experience all the exciting features of the games online.

http://www.vaultmp.com/