Build a small purposeful deck, route for the run you actually have, coordinate co-op decisions, and always check advice against the current Early Access branch.
Slay the Spire 2 is a live Early Access deckbuilder, so the best guide is a decision framework rather than a frozen tier list. Mega Crit launched it on March 5, 2026 with solo play, online co-op for up to four Steam friends, five characters, new cards and relics, and systems including enchantments, afflictions, Ancients, quests, and alternate acts. Balance and content continue to change, which means every numerical recommendation needs a version or checked date.
The first-run goal is consistency, not a perfect build
Begin with the cards and relics the current run actually offers. A good early card solves an immediate weakness—reliable damage, survivability, scaling, or consistency—without requiring three future rewards to function. Taking every card increases deck size and can make the important answers harder to draw. Skipping a reward is a real choice when the offered cards do not improve the plan.
Route against current health, deck strength, and known upcoming needs. An elite can improve a run through relic rewards, but an elite path is not automatically correct when the deck cannot handle its likely pressure. A rest site, shop, or safer combat branch can preserve the run long enough for the deck's plan to become coherent.
The beginner guide turns those principles into a repeatable card, path, and rest-site checklist without pretending that one build survives every patch.
Co-op changes the information problem
Official material confirms online co-op for up to four players, multiplayer-specific cards, and team synergies. Mega Crit's FAQ says the current system uses Steam friends and has no matchmaking. Before anyone confirms an action, name lethal damage, incoming danger, shared debuffs or setup, and which player needs a target to remain alive. Communication prevents duplicated defense and accidental removal of a target another player needed.
The co-op guide focuses on turn planning and connection expectations that remain useful across balance changes. It deliberately avoids declaring a permanent best character pair while Early Access cards are still being adjusted.
Treat branch and version as part of every answer
Mega Crit describes the beta branch as an optional test environment for experimental changes before they reach the main branch. Advice proven on beta may not apply to the default build, and main-branch advice can become stale after a major update. Check the branch and version before reporting a bug or copying an exact card value.
The published roadmap includes additional characters, alternate acts, more cards, events, relics and potions, compatibility work, quality-of-life improvements, Workshop support, and a later true ending. It intentionally does not attach firm dates. Use the Early Access roadmap guide to separate current features from planned ones.
Platforms and requirements
Early Access is officially available on Windows, macOS, and Linux, and Mega Crit says it supports Steam Deck. Console and mobile releases are planned for later rather than available as part of the current Early Access launch. The game requires 4 GB storage and 4 GB RAM at the published minimum on all three desktop platforms, with platform-specific graphics requirements. Check system requirements for the verified table.
Sources
QUICK ANSWERS
Questions players ask next
Is Slay the Spire 2 out now?
Yes. It entered Steam Early Access on March 5, 2026 for Windows, macOS, and Linux.
Do I need to play Slay the Spire 1 first?
No. Mega Crit says new players do not need prior experience with the first game.
Does Slay the Spire 2 have co-op?
Yes. Up to four Steam friends can play online together. Mega Crit says there is no matchmaking system at present.
Is Slay the Spire 2 finished?
No. It is in Early Access and continues to receive balance, content, compatibility, and quality-of-life changes.