The adventurer’s trial co-op guide
How co-op works in The Adventurer's Trial

The Adventurer's Trial is a top-down pixel-art sandbox where exploring, building, mining, farming, and challenging epic bosses all happen in the same run. Co-op lets you share that run with friends, and the developer's description confirms that you play solo or with up to 3 friends. On Steam, the feature list includes Single-player,Multi-player,Co-op,LAN Co-op, and Family Sharing.
Because the game is Coming soon and launching into Early Access, the exact invite flow and lobby options are not documented yet. What is confirmed is that co-op is a core mode, not a post-launch extra, and that a session can mix resource gathering, building, farming, and boss encounters together.
- Shared runs: players work in the same world toward the same Trial goals.
- Splitting up: one player can mine while another builds or farms, which speeds up base setup considerably.
- Boss fights: group encounters are where co-op shines, since extra bodies make it easier to handle adds and cover ground.
Play solo or with up to 3 friends in thrilling top-down adventures.
Player count: solo, two, three, or four
The maximum party size is 4 players: one host and up to 3 friends joining. That means the game supports runs at every party size from a lone adventurer to a full four-person group. Treat 4 as the hard cap when planning a session, and build your group around what you want to accomplish in the Trial.
- Solo: you control every resource, build decision, and fight. Good for learning boss behavior before dragging friends in.
- Two players: a clean balance of coverage and coordination. One player can focus on combat while the other handles gathering.
- Three players: enough bodies to cover combat, mining, and building at the same time, though communication matters more.
- Four players: the full squad. Best for tougher bosses and large building projects, but resource competition goes up.
If you have a rotating group, decide the party size before the session starts. Jumping from three to four players mid-run is possible in most co-op games, but confirming the host and the player slots up front avoids wasted time.
Local and LAN co-op vs online
The Adventurer's Trial lists LAN Co-op alongside standard Co-op, so you can play over a local network or connect with friends remotely. Both options are part of the same Steam feature set, with Multi-player covering the broader online side. The right choice depends on where your friends are:
- LAN Co-op: best when every player is on the same network, such as a shared house, dorm, or LAN gathering. Expect lower latency and fewer dropped connections.
- Online co-op: the way to play when friends are in different locations. It uses standard multiplayer connections, so stability depends on each player's network.
- Family Sharing: listed as a supported Steam feature, useful if you plan to share the game within a family library setup.
Neither mode has documented server details before launch. For Early Access, plan to have the player with the most stable connection host the session, especially for longer Trial runs.
Progression and saves in co-op
Shared progression details are not confirmed at this time. The available facts do not state whether progress from a co-op session carries over to a host's solo world, whether guest players keep their own rewards when leaving, or how save files behave when someone drops out mid-run.
Until the developers clarify the system, treat the host's session as the source of truth. Practical assumptions to play by:
- Host saves the world: expect the world state to live on the host's save file, so schedule longer sessions with the same host.
- Guests should confirm before leaving: if a guest built a key base section or gathered rare materials, leaving early may hurt the host's progress.
- Check Early Access notes after launch: progression and save behavior often change during Early Access, so revisit this page once the game is live.
Before your first co-op run, agree on who hosts and how long the session will last. If progression turns out to be host-only, a clear hosting plan saves you from losing hours of building and boss prep.
Co-op tips for surviving the Trial
The Trial combines exploration, construction, farming, and boss fights, and a coordinated group survives far longer than four players acting independently. These tips apply at any party size:
- Assign roles before a boss fight: designate one player to focus on staying alive and drawing aggro while the others push damage.
- Split gathering and building: a base goes up much faster when one player mines while another places structures and farms supplies.
- Prepare between attempts: use downtime after a failed boss attempt to restock food, materials, and gear instead of rushing straight back in.
- Call out boss behavior: with three or four players, you have more eyes on the fight, so name what you see and reposition together.
A full group of 4 players on LAN Co-op gives the most reliable experience, which matters most for multi-stage boss encounters. For online play, keep expectations realistic and be ready for the usual Early Access quirks until the developers smooth out the networking side.