Setup Questions
Setup pages answer lobby rules and platform limits fast, because those are the first questions new multiplayer players ask.
Co-op hub
Co-op is one of the sequel's biggest new features, and it raises a different set of questions from solo play: how invites work, whether there is matchmaking, how unlocks behave, and what makes a stable party.
Start here if your group wants a quick factual answer first, then a clearer idea of how team roles, class choices, and patch changes can affect multiplayer runs.

Co-op Basics
Multiplayer readers usually want direct operational answers: how to invite friends, whether the game has matchmaking, whether co-op unlocks count, and which classes make the cleanest first party.
Setup pages answer lobby rules and platform limits fast, because those are the first questions new multiplayer players ask.
Unlock behavior and party progression matter because most groups want to know whether they can learn together without falling behind on roster progress.
Team-comp pages matter because a co-op run changes drafting, communication, and class roles in ways solo players do not need to consider.
Official Video
Most multiplayer questions start with setup and scope. Before your group digs into matchmaking, unlocks, or role splits, the official trailer is a fast way to confirm that the feature is real, current, and built into the launch version.
The official launch trailer is still the cleanest high-level visual for the friends-only co-op feature set.
Watch on Mega Crit YouTubeMultiplayer Answers
These pages are structured around the exact questions multiplayer readers ask first: how Slay the Spire 2 co-op works, whether it has matchmaking, how groups should think about team comps, and whether unlock progress carries through co-op runs.

Slay the Spire 2 supports online co-op for up to four players. The official FAQ confirms it is Steam friends only and does not include matchmaking.
Quick answer
How does co-op work in Slay the Spire 2?

No. As of March 7, 2026, Slay the Spire 2 co-op is Steam friends only and does not include matchmaking.
Quick answer
Does Slay the Spire 2 have matchmaking?

Launch-week co-op is not solved enough for a fake definitive tier list. The stronger page is a roles-and-synergies guide for groups building around communication and clean jobs.
Quick answer
What are the best co-op team comps in Slay the Spire 2?

Launch-day player reports say yes: co-op runs can unlock characters. Treat the exact details as community-verified rather than officially exhaustively documented.
Quick answer
Can you unlock characters in Slay the Spire 2 co-op?
Official co-op sources
Mega Crit early access launch post
OfficialOfficial launch article for the current early access build.
Mega Crit release date trailer post
OfficialOfficial summary of the launch date, the five-character roster, and co-op support.
Official Steam FAQ
OfficialPinned by Mega Crit. Confirms the launch time, price, platforms, Steam Deck support, and early access range.
Steam store page
OfficialLaunch date, supported languages, platforms, early access notes, and the official store description.
Next Stops
Once the basics are clear, these hubs help your group move into role-friendly guides, mechanic explanations, and updates that affect multiplayer play.
Mechanics and character pages explain the new systems and point you toward deeper guides.
The character hub compares the five launch classes, shows their role in the roster, and points toward deeper class primers.
The cards page is now a dense utility library with live search, character filters, and a verified base-versus-upgraded gallery for the current Early Access pool.
The relics page is a searchable passive-effect database for players who want quick text checks without leaving the run-planning flow.
The potions page keeps short tactical effects searchable and filtered by class so quick combat tools are easy to compare.
The compare hub is for returning players who want a clean read on what changed from Slay the Spire 1 to Slay the Spire 2.
The tips hub repackages the most useful launch-week advice into quick paths for beginners, unlocks, decisions, and co-op questions.
Decision-first guides answer the questions players hit during a live run.
Patch tracking and launch timeline pages help you confirm what is current during early access.