The file "01912Patch1.rvdata2" was a Ruby-based serialized data patch for Princess & Conquest created in RPG Maker VX Ace, which was removed from the game's file structure on December 29, 2022. It served as a temporary patch file, likely for modifying game data such as items or system scripts. For further technical details, see the documentation on SteamDB . AI responses may include mistakes. Learn more Princess & Conquest update for 29 December 2022 · SteamDB