Listenservers

A listen server is a multiplayer hosting setup in which the host player's computer runs both the game client and the game server, allowing other players to join by connecting to the host's IP address. The host participates as a player while also acting as the session’s server.

How it works: The game is started in a host mode, and other players connect to the host's address and port. The host must provide enough CPU, memory, and upload bandwidth for the session. NAT and firewall considerations may require port forwarding or relaxing firewall rules. In many games, the host's machine has authority over the game state, meaning the host can influence or determine outcomes.

Advantages include simplicity and low setup cost, as no separate server infrastructure is needed. It is convenient for quick matches, local networks, or small communities. Disadvantages include reliance on the host’s machine for uptime and performance; if the host has a poor connection or goes offline, the session ends. Latency and bandwidth limits on the host can affect all players, and there are security and cheating concerns since the host often has broad control over the game state.

Compared with dedicated servers, listen servers place the burden of hosting on a single player and typically offer higher latency for others and fewer concurrent players. Many games support both listen hosting and dedicated servers, letting players choose based on their needs and resources.

Historically, listen servers were common in classic PC multiplayer titles such as Quake and early Counter-Strike editions. Today, they remain an option in some titles for local play or small communities, though dedicated servers are often preferred for larger-scale or competitive play.