Game info · co-op rules from the developer

Grand Theft Timeline co-op and multiplayer rules

How many players can play Grand Theft Timeline together?

The store says “1-4+ PLAYERS! Online co-op, and solo is fun too”, and the Early Access answers list “online co-op for 1-4+ players” as part of the finished core game Steam. Steam’s feature list for the game shows Single-player, Multi-player, Co-op and Online Co-op.

The “+” is not explained. The store never states a hard cap, so four is the number the developer stands behind and anything above it is unconfirmed. Several store screenshots show three or four players together in one world, each with a name tag over a white helmet.

Is there matchmaking or online play with strangers?

No. On 2 November a player asked whether there would be a matchmaking queue or servers full of other players. The developer replied: “no, singleplayer or friends only” Developer. So Grand Theft Timeline online play means inviting people you know, presumably through Steam friends; the invite flow itself has not been shown.

If you have no group, the practical options are the official Discord (the developer’s Steam thread calls it “Fast Support / Playtest”) and the Steam discussions, where players already look for crews. Neither is matchmaking; you still add each other as friends.

Is there couch co-op or split screen?

No. Asked “Will there be couch co-op?” on 16 August, the developer answered “nope” Developer. Each player needs their own PC and their own copy on Steam. Steam lists Family Sharing as supported, which lets people in a Steam family share a library, but that is a Steam feature, not a co-op mode, and how it behaves for playing together has not been tested here.

What happens if a friend gets left behind in another era?

This is the rule the whole game is built around. The store: “The machine leaves with whoever’s inside. Miss it and you show up decades older. Or as a baby.” Steam In the screenshots the HUD shows a “JUMP WINDOW” bar, and the cockpit prompt to leave is “JUMP LEVER — SEND IT”.

A player hoped they could strand a friend (“We left Kevin in 1340. He’ll figure it out.”) and fetch them later. The developer said no: it “wouldnt rly be fun to play alone”, but anyone left behind will “get old/become babies” and “lose items” Developer. In practice:

1. Watch the jump window while you loot; whoever pulls the lever decides when the machine goes.
2. Everyone inside travels; anyone outside does not stay in that era for later pickup.
3. The player left behind rejoins aged up or as a baby and loses items they carried.

How long the ageing lasts and exactly which items are lost has not been published.

Can you play Grand Theft Timeline solo?

Yes. The store lists Single-player and says “solo is fun too”, and the free Discord playtest was offered “solo or with your friends” Steam. One player asked on the forum whether any content is locked when playing alone; the developer has not answered, and the store does not mention solo-only limits. The arena, the zoo and the stocks are described without any player-count condition.

What is not answered yet?

• The real player cap behind “4+”.
• Whether anything is harder or locked in solo play.
• Controller and Steam Deck support (the store lists neither).
• Whether Workshop worlds need every player to subscribe (see mods).

We searched the store page, both official announcements, all Steam discussions, the developer’s website and every trailer for these. They will be filled in from launch-day play and official notes; see the updates page.