Games
The ports players need for the games people host most, taken from each game's own docs. Any game not listed works too, start its server and the agent finds the ports it's listening on.
Games and their ports
41 games
| Game | Ports players need | How players join |
|---|---|---|
| Minecraft Java Edition | 25565 TCP | Server address in Multiplayer, no port needed |
| Minecraft Bedrock Edition | 19132 UDP | Servers tab, add the address and port |
| Hytale | 5520 UDP | Address from the Servers screen |
| Rust | 28015 UDP28016 UDP | Server browser or client.connect |
| Valheim | 2456 UDP2457 UDP | Join IP, or the Steam server list |
| Palworld | 8211 UDP | Connect by IP, or the community server list |
| ARK: Survival Evolved | 7777 UDP7778 UDP27015 UDP | Unofficial server list or the Steam browser |
| ARK: Survival Ascended | 7777 UDP | In-game session browser |
| 7 Days to Die | 26900 TCP26900 to 26903 UDP | In-game server browser or direct IP |
| Project Zomboid | 16261 UDP16262 UDP | Steam server browser or direct IP |
| Enshrouded | 15637 UDP | In-game server browser |
| Satisfactory | 7777 TCP UDP8888 TCP | Server Manager, add by IP |
| Conan Exiles | 7777 UDP7778 UDP27015 UDP | In-game server browser or direct connect |
| Arma 3 | 2302 to 2306 UDP | In-game and Steam server browsers |
| Arma Reforger | 2001 UDP | Server browser, cross-platform with consoles |
| Abiotic Factor | 7777 UDP27015 UDP | Server browser or join code |
| Unturned | 27015 UDP27016 UDP | Server list or direct IP |
| Space Engineers | 27016 UDP | Steam server browser or direct IP |
| Counter-Strike 2 | 27015 UDP | Connect by IP or the community browser |
| Garry's Mod | 27015 UDP | Server browser or connect by IP |
| Left 4 Dead 2 | 27015 UDP | Console connect, or the Steam browser |
| Barotrauma | 27015 UDP27016 UDP | Server browser or direct IP |
| Don't Starve Together | 10999 UDP | In-game server browser |
| Factorio | 34197 UDP | Connect by address, or the public list |
| Necesse | 14159 UDP | Multiplayer, enter the address and port |
| Icarus | 17777 UDP27015 UDP | Steam server browser |
| Terraria and tModLoader | 7777 TCP | Join via IP |
| Starbound | 21025 TCP | Multiplayer, enter the IP or name |
| Vintage Story | 42420 TCP UDP | Multiplayer, add the server by IP |
| Luanti (formerly Minetest) | 30000 UDP | Address and port, or the public list |
| Mindustry | 6567 TCP UDP | Join Game, enter the IP and port |
| Teeworlds and DDNet | 8303 UDP | Server browser or connect by address |
| OpenTTD | 3979 TCP | Connect by address or invite code |
| SCP: Secret Laboratory | 7777 UDP | Server browser or direct connect |
| Assetto Corsa | 9600 TCP UDP8081 TCP | Lobby server list or direct |
| BeamMP | 30814 TCP UDP | Launcher server list or direct connect |
| FiveM | 30120 TCP UDP | Cfx.re server list or connect by IP |
| Among Us with Impostor | 22023 UDP22023 TCP | A custom region pointing at the server |
| Eco | 3000 UDP3001 TCP | In-game server browser or direct connect |
| Avorion | 27000 TCP UDP | Server list or direct IP |
| Veloren | 14004 TCP | Address in the server list |
No game in the list matches that. Any game whose server listens on a port works, start it and the agent finds the ports.
Not in the list
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Any other game
Start its server and the agent sees which ports it's listening on, then offers them. Admin ports such as RCON stay private unless you tick them. You can always type ports in by hand.
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Games that don't need a relay
Some games join through Steam's own relay network, so there's nothing to forward. Euro Truck Simulator 2 and American Truck Simulator dedicated servers work that way. So does Core Keeper when players join by Game ID.