Mega Crit is actively developing Slay the Spire 2 in early access, releasing frequent balance patches and a major update that removed a boss and fixed RNG bias based on external analysis.
Mega Crit has been iterating on Slay the Spire 2 through early access, with two significant updates in June and July 2026. The second major update, released on June 19, removed the Act 3 boss Door Maker, which the team said forced interesting decisions but exceeded their complexity threshold and had unresolved issues. It was replaced by a new boss called Eternal Hourglass. The same update overhauled the random number generator after mathematician Andy Tockman published a report on June 15 showing significant bias in random events-for example, the Curse card from Neow's Bone relic had a 73.74% chance of being Anguish on one path and a 0% chance of Debt on another. The RNG fix was implemented unusually fast, skipping the usual beta testing cycle. Steam Workshop support went live, allowing players to browse and install mods directly in the game, and a monster encyclopedia feature was added with plans to expand it to include stats and lore.
On July 3, Mega Crit released update v0.108.0 for the beta branch, nerfing Defect's Compression and Ironclad's Crimson Garment, reworking Silent's Infectious Explosion, and buffing Necrobinder's Soul Storm. The Act 3 boss Eternal Hourglass also received animations. These patches signal active balancing ahead of the full early access release, with the studio treating early access as a genuine feedback loop rather than a marketing phase.
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Mega Crit released update v0.108.0 for the Slay the Spire 2 beta branch on July 3. The patch nerfs Defect's Compression and Ironclad's Crimson Garment, reworks Silent's Infectious Explosion, and buffs Necrobinder's Soul Storm. The Act 3 boss Eternal Hourglass also received animations.
Mega Crit released the second major update for Slay the Spire 2 on June 19, 2026, bringing the beta branch changes to the main branch. The update removes the controversial Act 3 boss Door Maker, replacing it with a new boss called Eternal Hourglass. The development team said Door Maker forced interesting decisions but exceeded their complexity threshold and had unresolved issues. Steam Workshop support is now live, allowing players to browse and install mods directly in the game. A monster encyclopedia feature has also been added, letting players view encountered monsters and their animations, with plans to expand it to include stats and lore. The update overhauls the random number generator after mathematician Andy Tockman published a report on June 15 showing significant bias in random events. For example, the Curse card from Neow's Bone relic had a 73.74% chance of being Anguish on one path and a 0% chance of Debt on another. The RNG fix was implemented unusually fast, skipping the usual beta testing cycle. The patch also includes new relics, badges, character balance adjustments, and UI improvements.