While previously paid DLC, these maps were made free for all players to host and join earlier in 2020, and this version continued that accessibility. Regarding the .rar File Extension
This specific update introduced several significant features and experimental changes: among_us__v2020_9_1s___dlc_.ra...
Added a globe icon to the "Online" menu, allowing players to switch between North America, Europe, and Asia regions to handle massive server loads. While previously paid DLC, these maps were made
Including the Mini Crewmate, Hamster, and Brainslug. Skin Packs: Themes for the MIRA HQ and Polus maps. Among Us and Innersloth in 2020 While previously paid DLC