Book Book.StS2.RefLib by: Book .NET 9.0 This package targets .NET 9.0. The package is compatible with this framework or higher. 3,937 total downloads last updated 8/14/2026 Latest version: 0.111.0-beta (prerelease) StS2 Mod Slay The Spire 2 reference assemblies. Compile mods without referencing the game.