Downloading or running .iso files from untrusted P2P sources carries significant risks:

: Buying directly from the developer often provides a DRM-free download plus a Steam key.

: This specific version (1.4) is outdated. The current version of RimWorld is 1.5 , which includes major performance optimizations, new lighting systems, and crawl mechanics that are not present in 1.4.

: RimWorld relies heavily on the Steam Workshop for its massive modding scene. Pirated versions often struggle with mod integration and version mismatches. Official Access