FiveM
What is FiveM? GTA 5 roleplay servers explained
FiveM lets you play GTA 5 on private multiplayer servers with their own rules, maps and systems. Most GTA 5 roleplay servers run on it.
Vice Roleplay · Sources checked:

FiveM is a multiplayer platform for the PC version of GTA 5, made by the Cfx.re team (who joined Rockstar Games in 2023). Instead of GTA Online, you connect to servers run by communities, each with its own rules and systems. Most roleplay servers are on FiveM.
What you find on FiveM
Los Santos
Vehicles
Characters
How is it different from GTA Online?
GTA Online is Rockstar’s own online mode, the same for everyone. On FiveM every server decides its own economy, jobs, rules and even the map. A roleplay server asks you to play a character, not to farm missions.
You still need a legal PC copy of GTA 5 (Steam, Epic Games or Rockstar Games Launcher). FiveM itself is free.
Vice and FiveM
Vice’s Los Santos side is being prepared on FiveM, as part of the same universe as Vice City on SA:MP. You will use the same viceroleplay.com account. The opening will be announced on Discord and on the site.
Vice Roleplay is not affiliated with Cfx.re or Rockstar Games. Details were checked against the official FiveM documentation.
Sources and scope
This article was prepared with AI assistance after checking the sources and Vice rules. Example scenes were written for explanation and do not describe actual player incidents. Current server rules and on-screen requirements take precedence.