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.
Quality-of-life toggles that allow you to customize the difficulty and physics. 2. The Risks (Solid "Content" to Watch For) Rain.World.v1.9.03-P2P.zip
If the file is legitimate for its name, it contains version of Rain World . This version includes: Rain World is a masterpiece developed by a
A punishingly difficult survival platformer where you play as a "slugcat." Version 1
If you want to play safely and support the devs, I'd recommend grabbing it during a Steam or GOG sale, where it often goes for a deep discount.
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.