Rain.world.v1.9.03-p2p.zip Link

Since this is a P2P release, you should be extremely cautious. These files are common vectors for:

If the file is legitimate for its name, it contains version of Rain World . This version includes: 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. Since this is a P2P release, you should

A punishingly difficult survival platformer where you play as a "slugcat." Since this is a P2P release

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.