Mars mods for Dota 2
What has been made for Mars, what each one changes, and who made it.
There are 5 mods for Mars in the D2PFX catalog. Each one is a cosmetic change on your own screen: nobody else in the match sees it, and your Steam inventory is untouched.
Mars Crimson Set
Mars Diretide Shimmer
Darkness Crimson Naga Siren
Mars Progenitors BaneCrimson
Mars Progenitors Bane
Installing any of these
Open Dota 2 Mod Manager, find the hero, press Install. The app puts the file in a free pak slot in the folder your game mounts, tells you when two mods carry the same file, and puts everything back after a Dota patch. The full guide, or the manual route if you would rather do it yourself.