IV:MP is a modification for the game Grand Theft Auto: IV that adds an alternative multiplayer which features online play with various custom modes.
Sadly development of IV: Multiplayer has stopped.

This page is not official. Feel free to look at this forum if you use old versions such as IV:MP 0.1 T3 which you can download below:

★ Client:
IV:MP 0.1 T3 Client

★ Server:
IV:MP 0.1 T3 Server (Windows)
IV:MP 0.1 T3 Server (Linux)

★ Dead Wiki: IV:MP Wiki Archive by www.webarchive.org
★ Server Browser: IV:MP Server Browser by www.game-state.com
★ Recommended server to play: CPGW v2.0 Mod on IV:MP 0.1 T3

★ Alternative multiplayer modification: MultIV