Slay the Spire 2's latest beta patch removes Act 3 boss Doormaker and replaces it with a new encounter called Aeonglass. Developer Mega Crit Games continues to reshape the sequel's endgame challenge through iterative testing.
The patch also delivers the Bestiary, a feature players have requested since early access launched. The Bestiary functions as a compendium tracking enemy encounters, allowing players to review enemy stats, abilities, and patterns without jumping into actual runs. This quality-of-life addition addresses a persistent player feedback point about deck-building clarity when facing unfamiliar threats.
Doormaker's removal signals ongoing balance concerns in Act 3. The boss evidently created friction points that Mega Crit deemed problematic enough to justify complete replacement rather than tuning. Aeonglass steps in as the alternative, though patch notes don't detail the new boss's mechanics.
Slay the Spire 2 entered early access in November 2024 on Steam and Nintendo Switch, building on the original's proven deck-building roguelike formula. The sequel expands on that foundation with new relics, cards, and encounters while maintaining the core systems that made the first game a standout indie hit. The beta phase reflects how seriously Mega Crit takes balancing runs across difficulty tiers and ensuring bosses feel fair rather than frustrating.
The Doormaker swap demonstrates the studio's willingness to cut content that isn't working. Early access serves exactly this purpose, giving players the opportunity to pressure-test encounters and provide feedback that shapes final design. A boss that punishes players unfairly or creates tedious gameplay patterns gets the axe.
These patches continue a pattern of refinement that should persist until full release. Balance changes and content swaps appear regularly as Mega Crit fine-tunes act