Is Slay the Spire 2 Crossplay?

Slay the Spire 2 introduces 4-player online co-op for the first time in the franchise's history. All players must own a separate copy of the game on Steam — Family Sharing does not count as an individual purchase for co-op purposes. Lobbies are private only: there is no public matchmaking, meaning all players need to be Steam friends with the host before being invited. The host creates a lobby via Main Menu > Multiplayer > Host, sets the Ascension level and Seed, then sends invites through the Steam Overlay. Each player picks their own character and brings their own deck into the run. Multiplayer-specific cards and team synergies are part of the experience, adding a strategic layer unique to co-op. Note: having any mismatched mods between players is enough to crash a lobby — disable mods before playing co-op.

Slay the Spire 2 is fully playable solo, and this remains the primary way many players experience it. All characters, cards, relics, and Ascension levels are available in single-player. The game can also be played offline without an internet connection, with Steam Cloud Saves syncing your progress next time you connect.

Slay the Spire 2 runs natively on SteamOS through the Godot engine, making it an excellent fit for Steam Deck. Steam Deck players share the same servers as Windows, macOS, and Linux players and can join co-op lobbies without any restrictions. Battery life while playing uncapped can be shorter than ideal — adjusting performance settings in the Quick Access Menu is recommended to extend sessions.

Console versions of Slay the Spire 2 for PS5, Xbox Series X/S, and Nintendo Switch 2 are planned for the full 1.0 release, currently estimated for around 2027. Mega Crit has confirmed they want to bring the game to as many platforms as possible, and cross-platform saving has been mentioned as a target for the 1.0 launch. However, whether PC and console players will be able to play co-op together has not been officially confirmed as of the current Early Access period. Given that the original Slay the Spire eventually released on nearly every platform with a screen, console and mobile ports are considered highly likely in the long term.

Within PC, yes — Windows, macOS, Linux, and Steam Deck players all share the same servers and can co-op freely. Console versions are planned for the full 1.0 release (estimated 2027), but crossplay between PC and console has not been confirmed yet.

Yes, cross-progression is supported across all PC platforms via Steam Cloud Saves. Your unlocked cards, Ascension levels, and character progression sync automatically between Windows, macOS, Linux, and Steam Deck.

Slay the Spire 2 supports online co-op for up to 4 players. All players must own separate copies of the game on Steam — there is no local co-op or split screen.

Not during Early Access. Console versions (PS5, Xbox Series X/S, Nintendo Switch 2) are planned for the full 1.0 release, currently estimated around 2027. A mobile port is also considered likely to follow, based on Mega Crit's history with the original game.

Slay the Spire 2 is currently $24.99 USD on Steam during Early Access. Mega Crit has confirmed the price will increase when the game exits Early Access, so purchasing now secures the lower rate.

You can absolutely play solo — and most players still do. The 4-player co-op is a new addition to the franchise and fully optional. The game can also be played offline.

Slay the Spire 2 introduces 4-player online co-op, two brand new characters (the Necrobinder and the Regent), multiplayer-specific cards and team synergies, a significantly upgraded art direction with a full-time art director, revamped events, new relics, potions, and more. The game is built from the ground up on the Godot engine.