: Within the game's files and house sequences, a "redacted" sticky note exists that players eventually unredacted. This note contains location coordinates that map out a real-world path from Washington to California, which some fans view as an out-of-game mystery . Piracy and "Repacks"

: Users have reported significant confusion over the game's size. While the installed version is approximately 59GB, some users found that extracting specific archives resulted in over 300GB of data due to duplicated files or complex subfolder structures. The "Mystery" of Returnal

: Early community efforts to deconstruct the game were met with difficulty because Returnal uses a non-standard version of Oodle compression . Common extraction tools failed to handle these files, leading to discussions in forums like Reddit about how to properly unpack its contents.

The suffix indicates a compressed archive file, often associated with the game's release on PC in February 2023.