Lightyear Frontier Multiplayer Guide

Player count and cross-platform support

The Steam store describes an open-world mech farming game for 1–4 players, and the platform categories include cross-platform multiplayer. IGN’s crossplay page says PC, Xbox Series X/S and Game Pass players can play together. That means a host on one platform can invite friends on the other, using the invite code rather than the platform friend button.

Online play depends on the platform services and the host’s session. There is no evidence of a dedicated server or a persistent world that continues after the host leaves; treat the host’s save as the active world.

Host a session

From the main menu, choose Multiplayer, then Host Multiplayer Session. The host can set an optional password. Once the session is running, the pause menu has Show Invite Code; the code is five characters. Send the code and the password, if used, to the friends who are joining.

Keep the host save backed up before a long session. The host is the person whose world is active, and a crash or quit affects everyone. A short test session before a planned farm night is cheaper than discovering a connection problem after everyone has gathered.

1. Main menu → Multiplayer → Host Multiplayer Session.
2. Set an optional password.
3. Open the pause menu and choose Show Invite Code.
4. Send the five-character code and password to the players.
5. Start the session and confirm each player has loaded into the farm.

Join a session: code versus platform invite

A same-platform friend can use the platform’s Invite Friend button. A cross-platform friend cannot; IGN explicitly says the Invite Friend button does not invite players on another platform. They need Join Multiplayer Session and the five-character code, plus the password if one was set.

If the code is rejected, check the character count and case, confirm the host is still in the session, and try the code again before changing network settings. A code from a closed session will not work even if it was correct a minute earlier.

What happens when the host leaves

The host quitting ends the session for the other players; the 2024 tutorial is explicit about this. There is no separate persistent server in the evidence. Plan sessions around the host’s availability, and save before the host stops playing.

If the group wants to continue, the host must start a new session from the same save. A different player hosting does not automatically inherit the old world unless the game provides an explicit save-transfer path, which the accessible sources do not document.

1.0 connection changes and current reports

The 1.0 patch notes say a join failure that could make every later join fail until restart was “potentially fixed”, and online error messages were improved. That is a patch-note claim, not a guarantee for every network. A November 2026 Steam thread still contains players reporting a disconnect within a minute of joining.

One player-reported workaround is to start the farm in a single-player session, then invite friends after the world is loaded. It is not an official fix. Try it only after the basic steps—same game version, host online, correct code, platform services signed in—and keep the host save backed up.