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Researchers at the Australian National University published a study on arXiv analyzing how gaze movement relates to performance in Slay the Spire. The study of 32 players found that those who defeated the boss showed more balanced, diverse gaze patterns, while losing players dwelled longer on enemy information. The paper will appear in PACMHCI in November 2026.
Mega Crit and figure manufacturer Youtooz have opened pre-orders for the first official figures based on the deck-building roguelike sequel Slay the Spire 2. The line includes two playable characters: Regent, depicted seated on a stone throne supported by two minions, and Necrobinder, standing with a scythe and accompanied by the skeletal hand Osty. Each vinyl figure stands approximately 12.7 cm (5 inches) tall and is priced at $29.99. Buyers can also choose a bundle that includes a 2-inch pin badge. The packaging features artwork that reflects the game's atmosphere. Shipments are scheduled between January 30 and March 15, 2027. Slay the Spire 2 entered early access on Steam on March 6, 2026, and has sold over 3 million copies as of March 2026.
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.
Kenville announced on June 28 that the crowdfunding campaign for the Japanese edition of the Slay the Spire: The Board Game expansion Downfall has set a new all-time record for board game crowdfunding in Japan, surpassing 190 million yen as of June 30. The campaign ends at 11:59 PM on June 30.
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.
Mega Crit released beta patch v0.107.0 for Slay the Spire 2, further adjusting the new Eternal Hourglass boss by removing its Decay debuff and altering block gain timing. The early-game Squirming Swarm enemy was strengthened at higher ascensions. Various cards and relics were buffed, and stability improvements were made, including replacing black-screen errors with pop-ups.