Slay the Spire 2
This area collects Slay the Spire 2 mechanics notes, including RNG, map generation, events, combat flow, mod debugging, and reproduction workflows.
Available Notes
What Acts Change
Explains how Overgrowth, Underdocks, Hive, and Glory affect map length, unknown count, event pools, monster pools, elite pools, boss pools, ancient pools, and whether unknown-room odds are act-specific.
Seed and RNG Mechanics
Explains why STS2 does not use one global random number for every result. Instead, the game derives multiple run-level and player-level RNG streams from a string seed, and reliable reproduction also depends on character, route, choices, player id, mods, and RNG counters.