If you are seeing this version as a .rar file on unofficial sites:
While the specific file name often appears on third-party file-sharing or "cracked" software sites, the legitimate V2.3 Hotfix was a critical technical update released by Mega Crit in early 2022 . Legitimate V2.3 Hotfix Content Slay.the.Spire.v2.3.Hotfix.rar
: This version solidified support for the Steam Deck, ensuring the UI and controller inputs were fully verified for the handheld console. If you are seeing this version as a
: V2.3 was followed quickly by V2.3.1, V2.3.3 (Steam Deck specific fixes), and V2.3.4 (fixing launch crashes for non-English Windows usernames). V2.3.3 (Steam Deck specific fixes)