: You can use the Steam console to download specific older "depots" of the game using SteamDB identifiers.

: Provides a DRM-free version of the game for users who prefer to own their files without an active client requirement.

It is highly recommended to download the game through official digital storefronts. These platforms ensure you receive the most stable, secure, and up-to-date version of the game, including support for the Downpour DLC and community mods.

: Be cautious of "online" download links from third-party or unofficial sites. These files are often unverified and may contain malware or be incompatible with modern operating systems like Windows 10/11.

: Another official storefront where the game is frequently available. Accessing Specific Older Builds

The specific build you are looking for, , refers to a version released on December 11, 2017 . This version was a significant update for the game that introduced the Monk and Hunter characters, along with a new Arena mode. Where to Legally Download Rain World

If you specifically need Build 12112017 for mod compatibility or speedrunning purposes, you can often "downpatch" the game if you own it on Steam:

: Occasionally, developers leave older stable builds in the "Betas" tab under the game's properties in your Steam Library.