Super Motherload

Set on Mars in an alternate Cold-War era, Super Motherload is a 1 to 4-player couch co-op digging adventure with storyline by Image Comics' Kurtis Wiebe, a fully voiced cast of Soviet and American characters, and a procedurally-generated world that changes each time you play. Purchase powerful upgrades and supplies for your mining pod as you progress and prosper, as well as rare Specials Abilities with random availability.

You, the player, work for Solarus Corporation, an inter-planetary mining operation that has developed the infrastructure needed to harvest the precious resources of Mars to meet demand back on Earth. Soon after being dropped on Mars, you begin to discover that things aren't quite as they seem.

Included free with the Steam version of Super Motherload is Motherload Goldium Edition, the 2004 cult classic that inspired games like Infiniminer.