Community servers can be found in:

• Server browser - look for coop or maps beginning with "bm_"
  
• Our Discord[discord.gg]

There is also an official server called SourceCoop official [EU], IP 49.12.103.55:27015

If you want to play just with your friends, you have to host a private server.
Please understand, that in order to make your server accessible over the net, you have to either:

• Port forward (27015-27030 UDP)
  
• Run a network tunneling service on the host, e.g. playit.gg
  
• Connect the host and all players by creating a virtual network, e.g. Radmin or Hamachi
  
• Beg the developers to add Steam networking to the game (Steam Datagram Relay)

If you do not do this, your server will probably be limited to LAN (Local network).

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• Server download, configuration and hosting
  
• Joining servers via integrated server browser
  
• Game launching
  
• Custom campaign mod support - coming soon

https://github.com/Alienmario/SCLauncher/releases/latest

Manual installation is no longer necessary or recommended and has been moved to legacy guide: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3519716415

Q: How to save progress?
A: You have to manually choose the map (see below), but you can save & load player state with sc_save and sc_load.

Q: How to change maps?
A: Use sm_map mapname or changelevel mapname commands. Check this guide for complete map list.
Alternatively, all players can start a map vote by typing /changemap in chat or using the ingame SourceCoop menu.

Q: How to set the difficulty?
A: By default, difficulty is set to increase by 2 per player. To set it manually, use the command sourcecoop_difficulty_auto -1 and sourcecoop_difficulty x where x is a number from 0 to infinity.

Q: I'm getting 'your map differs' error when connecting to a server.
A: It can mean 2 things, either you're in different branch of the game than the server or have a mod installed that replaces stock maps (like OAR Uncut).

Q: I'm getting 'unexpected authentication protocol 1675212' error when connecting to a server.
A: Did you install SourceMod into your game client? If so, disable/remove it.

Q: I found a bug.
A: Check if it's already listed under issues on the github, otherwise add a new issue.

Q: I want to help.
A: Please check out our github.

Q: Is this compatible with Blue Shift?
A: Not yet.