Take-on-mars.rar

The game has a dedicated "Addons" system. If the .rar is a mod, it likely needs to be placed in the game's addon folder and enabled via the launcher.

If you are having trouble running the contents of the archive, community-sourced troubleshooting guides recommend: Take-On-Mars.rar

A typical archive for this game or its mods might contain the following, based on common community discussions: The game has a dedicated "Addons" system