Version 1.9 was the major update that accompanied the Downpour expansion, adding new slugcats (The Gourmand, The Artificer, etc.), hundreds of new rooms, and the Safari mode.
"P2P" groups don't have the same reputation standards as established "Scene" groups (like Razor1911 or SKIDROW). The .exe could easily contain a trojan or a crypto-miner. Rain.World.v1.9.03-P2P.zip
Rain World is a masterpiece developed by a small indie team (Videocult). Because the game relies heavily on its (found on RainDB or the Steam Workshop), the official version provides a significantly better experience. Version 1
You might run into errors like SteamAPI_Init failed if the crack wasn't applied or packaged correctly. 3. Recommendation adding new slugcats (The Gourmand