Switch branches in Steam, not an in-game mode menu
Mega Crit's official v0.99 notes describe public-beta as an optional Steam branch. Their directions are for the Steam PC build; do not infer that the same branch switch exists on a different storefront or platform.
- In Steam Library, right-click Slay the Spire 2 and open Properties.
- Open Game Versions & Betas and choose public-beta.
- Wait for Steam to finish downloading/updating the selected branch before launching.
- To go back to default Main, open the same selector and choose None; wait for the branch update to finish.
- After launch, verify the branch/build shown by the game before comparing a card, relic, control or bug report.
References: Mega Crit: Slay the Spire 2 beta patch v0.99 · Slay the Spire 2 on Steam
Use the branch and date to resolve conflicting advice
The October newsletter checked for this guide reports a beta build and an upcoming planned update, while warning that work can be experimental and Main may catch up later. Treat those as dated status notes, not evergreen version numbers: revisit Mega Crit's latest announcement and the build displayed in your own game.
| What you see | First check | Do not conclude yet |
|---|---|---|
| Your card text differs from a video | Branch, in-game version and video date | That the card changed on every branch |
| A friend sees a different relic or control | Both players' branch and build | That the save is corrupted |
| A guide lists beta-only notes | Whether you intentionally selected public-beta | That the default Main game contains those changes |
| The beta selection is downloading | Steam's download queue and selected branch | That the switch is complete before the update finishes |
References: Mega Crit: Slay the Spire 2 beta patch v0.99 · Mega Crit: October 2026 Neowsletter
If a run or report no longer matches
Keep your version context before changing anything. Mega Crit describes beta as experimental and says its changes can be adjusted before Main. This page does not assert that switching branches preserves every in-progress run or that every update is backward-compatible.
References: Mega Crit: October 2026 Neowsletter · Slay the Spire 2 on Steam
Write a reproducible version note
When two players or sources disagree, a compact record makes the comparison useful without turning one screenshot into a universal balance claim.
References: Mega Crit: October 2026 Neowsletter · Mega Crit: Slay the Spire 2 beta patch v0.99
Before you play
- Use Steam's documented branch selector for the PC Early Access build.
- Wait for the branch download to complete.
- Check branch, build and source date before applying balance advice.
- Treat future update timing as a plan that can change.
Frequently asked questions
Is public-beta a game mode?
No. The cited directions select a Steam game branch in Properties; it is not a Daily or Custom Run option.
How do I return to the default version?
Use Steam → Properties → Game Versions & Betas and choose None, then let Steam finish updating.
Does a beta card change apply to Main immediately?
Not necessarily. Mega Crit says beta changes can be revised before Main; compare the branch and in-game version with the dated official notes.
Sources & revision notes
Editorial revision: November 5, 2026; not a gameplay test date. The reference notes identify source limits and version differences.
- Mega Crit: Slay the Spire 2 beta patch v0.99 (Official)
Mega Crit's official Steam announcement. It gives the Steam Library → Properties → Game Versions & Betas → public-beta route and explains that beta changes are optional, experimental and can change before reaching Main. Checked November 5, 2026.
- Mega Crit: October 2026 Neowsletter (Official)
Official developer newsletter, checked November 5, 2026. It describes beta v0.111.0 and a planned November 12 update, with Main expected to catch up to that beta; schedules and branch contents may change, so check the latest in-client build and official notes.
- Slay the Spire 2 on Steam (Official)
Mega Crit's Steam product page identifies the title as Early Access and describes up-to-four-player co-op. Checked November 5, 2026; platform availability and Early Access content can change.
- Slay the Spire 2 player discussions (Community)
External, user-generated Steam discussions; not reviewed or verified by GamerWin. Include branch, in-game version, platform, enabled mod names/versions and the exact action before posting. Do not include account details or save files containing private information.
November 5, 2026: added a branch-switch and version-context workflow from Mega Crit's official Steam notes. No game branch was switched or run tested.
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