Grand Theft Multiplayer is a free alternative multiplayer modification for Grand Theft Auto V, giving you the possibility to play with hundreds of players on dedicated servers with custom gamemodes built from the ground up and modified game experiences.

Feel free to join our official Discord Server or to visit our Twitter Profile for all latest informations.

GT-MP hooks your GTA V installation when launching and reverts it back to its normal, clean state after being closed so you can seamlessly switch between GT-MP and GTA:Online without risking a ban!

Powerful Scripting Engine
Our powerful scripting engine provides you with all the possibilities to unleash your creativeness and create something truly unique.

Powerful API
We provide you with a powerful API. You can also use natives from the GTA 5 engine. Just take a look in our Wiki or the NativeDB.

Endless Players
GT-MP was created to be played with hundreds of people together at the same time! Our raised player limit will allow you to go beyond 30 players for immersive fun.

1. Download the GT-MP-Setup.exe from this mod page or the official website
2. Launch Grand Theft Multiplayer using the installed launcher
3. Press LAUNCH in the upper right corner to launch the game with the mod
4. Once in-game, you should see a menu in which you can use the server browser to join any server
5. After closing the game, the launcher will revert your GTA V folder to a clean state

Mod support & mods installation
We currently do not have active mods support inbuilt, which means servers won't be able to set mods to be shared with connecting clients.
But you are still able to install mods on your client, which ofcourse are only client side. This includes visual mods like Redux, Shader mods or vehicle replacements.
As our launcher ensures your game folder is in a clean state by copying mods and other stuff in a Disabled folder, you will have to install mods using the following methods.
1. Installing mods can be done using OpenIV to directly modify your game files.
2. If you rather wan't to use OpenIV's built in mods folder method, you can drop the OpenIV.asi in your GT-MP\bin folder.
3. OpenIV will then be loaded with your game on startup, you can drop mods you would like to run in your GTA V\mods folder like you are used to.
4. You can ofcourse install any *.asi mod you like by dropping it in the GT-MP\bin folder.

Server hosting
If you feel like hosting & developing your own GT-MP server, you can! Get the latest server binaries from our download page.
Check our wiki for more informations regarding GT-MP Scripting & Server hosting.

Issues or suggestions?
For full installation support, visit our forums.
Feel free to report bugs and suggestions to our bug tracker.

Useful links
Official website
Official download page
Server masterlist
Bugs & Features tracker
Wiki / documentation
GitHub profile
Official Discord Server
Twitter Profile
Steam group

The reason we have a launcher is to verify that clients own a legit copy of GTA 5. GT-MP works like any other singleplayer mod and doesn't use / touch any of the GTA 5, Rockstar Online Services.
With the use of our mod you agree with our EULA.
Our Client is built on top of ScriptHookV like most of the singleplayer mods out there. All credits for ScriptHookV belong to Alexander Blade, more informations on the scripthook website.

Visit our forums for a full list of all changelogs and update notes.

Sept 30th 2017 - GT-MP Server & Client Patch - v0.1.638.634
Jun 24th 2017 - GT-MP Server & Client Patch - v0.1.516.133
May 28th 2017 - GT-MP Server & Client Patch - v0.1.513.481
May 23rd 2017 - GT-MP Server & Client Patch - v0.1.508.640​
May 16th 2017 - GT-MP Server & Client Patch - v0.1.501.566
May 12th 2017 - GT-MP Server & Client Patch - v0.1.497.368
May 9th 2017 - GT-MP Server & Client Hotfix - v0.1.493.627

Licensing informations
Our client is distributed with ScriptHookV, ( custom ) ScriptHookVDotNet, ClearScript, EasyHook, Lidgren, NAudio, NVorbis, NLog, CEF, BCrypt.Net, SharpDX, protobuf & Xilium.CefGlue.
All licenses are respected and distributed with the client.

Visit our wiki for a full list of credits.

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Server & Client Patch


We worked hard the last months, to get this finally done. I really can't say more than just thanks to everybody that helped us.
A huge and special thanks to root which is a new developer working with me on GT-MP and to Neta & Hardy for the long nights we had while testing & developing this update.
For the future we are going to aim for smaller updates, which won't take as long as this one.

Feel free to donate if you feel like supporting us:
Like always, please be sure to report all the bugs and weird things you encounter to our Bug Tracker.



  • Synced vehicle lights
  • Synced vehicle high beam lights
  • Synced vehicle rocket boosts
  • Synced vehicle truck trailers
  • Synced vehicle oil & fuel displays
  • Synced vehicle dirt level
  • Synced vehicle convertible rooftops
  • Synced air vehicle landing gears
  • Synced Smugglers Run DLC vehicle mounted guns
  • Synced Gunrunning DLC vehicle mounted guns
  • Synced the characters head ( look at ) movement
  • Synced vehicle entering properly, to be smooth and cool now
  • Synced vehicle exiting smoothly
  • Synced melee combat ground attacks on vehicles
  • Synced all traffic lights
  • Synced vehicle siren state, even when out of streaming range
  • Synced vehicle siren blips ( sounds )
  • Synced aiming from cover
  • Synced vehicle front light damage
  • Perfectly synced vehicle engine sounds
  • Added sync for aimed cover shooting
  • Added sync for walking in high & low cover
  • Added vehicle entering positions & seats for all vehicles, buses and other multi passenger vehicles should work flawless now
  • Improved air vehicles sync
  • Increased streaming range of air vehicles
  • Improved the chat input by adding the possibility to move with the left & right keys + marking texts by using SHIFT
  • Added the possibility to scale the chat ( in the settings and )
  • Added various performance related settings ( new performance tab in the settings )
  • Introducing the new Featured servers list, on which we are going to promote amazing and unique servers
  • Added the possibilty to point with your finger using the "B" key ( can be disabled by servers using the client API )
  • The Grand Theft Multiplayer process ( window ) is now really called "Grand Theft Multiplayer"
  • Added "Loading Grand Theft Multiplayer..." indicator on the lower right corner, when loading the game with our mod injected
  • Added translations for the main menu and various other messages ( in the settings ), currently supported are: de, en, pt, ru, tr
  • Cleaned the server connection & download screen to look fresh. Oh and we also added a brand.
  • Added the possibility to directly join servers using our launcher ( right click > Join server )
  • Added private dimensions range, everything below dimension 0 is now private ( more informations in our wiki )
  • Enabled CEF "experimental-web-platform-features" for newer CSS features
  • Added setting to hide chat if not used
  • CTRL + C will now copy your chat input
  • Added proper ragdolls sync
  • Added peds & animals getting up sync after beeing a ragdoll
  • Updated chromium embedded framework to version 3.3071.1649.g98725e6
  • Added licensing informations for all dependencies we have ( located in your GT-MP\licenses folder )
  • Redesigned our launcher to link our web platforms & look a bit more attractive
  • A lot of improvements were made to the shooting / wepaon sync ( you can now finally hit people with a bit of luck )
  • Added all new map blips from the smugglers run & gunrunning DLC
  • Added synced parachuting
  • Improved game startup time
  • Added experimental partial mod support
  • Added more than 300 new Scripting API methods, check out our wiki for all of those

Make sure to also check out our list of deprecated API methods, over at our wiki.


  • Fixed jittery braking lights
  • Fixed performance issues on AMD ryzen processors
  • Fixed bug causing players to desync in first person
  • Fixed mods not beeing correctly moved into the disabled folder on startup
  • Fixed some of the many randomly happening game crashes ( this will be a long journey )
  • Fixed CEF browser elements flickering
  • Fixed entering various vehicles using G not possible
  • Fixed some car roofs beeing pixelated ( servers need to properly set the liveries of those now )
  • Fixed beeing able to enter locked vehicles
  • Fixed pressing "P" opening main menu when typing in input boxes
  • Fixed need of double ESC'ing when closing menus
  • Fixed HTTPServer server option for downloading
  • Fixed map blips heavy flickering
  • Fixed streamer issues causing some desyncs
  • Fixed various security issues on player connection verification ( we also introduced some new server settings with this, more info in the wiki )
  • Fixed various server problems causing buffer full errors
  • Fixed several server threading issues, sometimes causing server crashes
  • Fixed several server memory issues, taking too much memory
  • Fixed a lot of special characters not working in the chat
  • Fixed CTRL+C on unix systems
  • Fixed various problems on users disconnecting / blocking
  • Fixed various weapon ammo related issues
  • Fixed various issues that could deadlock the server

And more than 100 other fixes

Known Issues

  • Vehicle Middle Finger not synced ( bugged )
  • Entering of some vehicles is not properly synced yet ( teleports you instead )

Client Hotfix 1 (v0.1.639.21)

  • Fixed setPlayerFacialIdleAnimOverride API on client side
  • Fixed connection timeout issue
  • Disabled Social Club launcher closed feature for steam versions

Server & Client Hotfix 2 (v0.1.640.64)

  • Fixed setPlayerFacialIdleAnimOverride() API on client side
  • Fixed problem with backuping not existing cloud save data
  • Fixed possible timeout problem on server side
  • Fixed possible melee exception related to animals
  • Fixed passanger seat for akuma bike
  • Switching keyboard layout on startup now
  • Fixed manual selection of GTA5.exe (invalid path issue)
  • Fixed entitySeetrough parameter for 3d textlabels
  • Fixed blackscreen when connecting to server
  • Completly rewrote HTTP Server
  • Fixed vehicles "floating" desync bug & trailers position sync
  • Added isMainMenuOpen() API on client side
  • Removed 'P' as key to open main menu (still opens GTA Menu when not on server)
  • Fixed weird vehicle desyncs with high speed vehicles
  • Fixed vehicle tuning streaming issues
  • Disabled some debug logging when disabled in settings
  • Fixed UpdateAttachments exceptions on client side
  • Some OnFoot sync improvements

Client Hotfix 3 (v0.1.641.697)

  • Fixed some savegame issue & extracts savegame files from assembly now
  • Fixed private dimensions (thx TiaqoY0 )
  • Fixed vehicle entering for Trash, Trash2, Youga2 & Hunter
  • Fixed loading blackscreen issue (hopefully now for real)
  • Added getCultureISOLanguageName() API on client side
  • Fixed cabrio rooftop streaming issues
  • Implemented a brazilian key not recognized by windows
  • Fixed unwanted layout switch
  • Fixed chat delay
  • Updated chinese translations


Make sure to restart your launcher and your client for the updates to apply!
Server owners & developers will have to download & replace the server with our latest package from below.

Get the latest Server binaries from our downloads page:
Get the latest Client Setup from our downloads page:
Get the latest Scripting API from the NuGet Gallery:
Get the latest Typescript Definitions from the NuGet Gallery:

Make sure to follow us on Twitter for the most recent news & update leaks:
Subscribe on our YouTube channel to be the first watching our awesome videos in the future: Grand Theft Multiplayer on YouTube


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Disclaimer: This project uses stolen code. Hence why this is nicknamed Stolen-MP.

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