My Summer Car Online

MSCO is a modification for My Summer Car that lets you to play multiplayer with your friends through Steam

Download MSCO


MSCO In Active Development Since 2023


Fully Functional My Summer Car Multiplayer


Closed Beta Available for Purchase

Building Satsuma in MSCO Live

Next Update ETA

MSCO is a modification for the game My Summer Car. The development of this mod started in October 2019 with the idea of Nika and Diehy.  With the current Closed Beta, you can test and play with your friends through limited functionality. The final goal for this project is to have a fully working mod that can be progressed with friends. Our biggest tasks are implementing Satsuma building and Save progression.

The mod has recently entered a Closed Beta that aims to deliver real progress and updates to the Online experience. We are in no affiliation with My Summer Car or Amistech Games, MSCO is a completely external mod that doesn’t modify or touch any original game files.

MSCO Closed Beta main features

  • New auto-updating Launcher
  • Minimum of 1 update per month from developer
  • Much more optimal online experience
  • Player lobby limit of 12
“Do I need steam version MSC to play MSCO?”
– Short answer, yes. MSCO will only open if MSC is found on your steam library.
 “MSCO does not start. Please help”
– Watch this video for a first-time setup.
 “Does everyone need Closed Beta to play together?”
– Yes, MSCO does not allow gameplay through different versions, so if you are on closed beta, your friends will also need closed beta.
 “I die when my friend joins” / “My game freezes when a friend joins”
– Please follow the #guide posted on Discord.
 “Will MSCO be free when it is out of beta?”
– There will be a free version, and those who have pre-ordered will have extra perks. The edition packages will also go up in price.
 “How many people can play at once?”
– MSCO can finally be played by unlimited amount of players, however we are limiting this number to 12 at the moment for stability.
 “Does this work?”
– Yes, it is working as of right now, you can watch Nika’s videos to see what functions the best.