Schlock Mercenary: Capital Offensive is a multi-player tactical shooter, played on a grid-based modular map, set in the popular Schlock Mercenary epic science fiction webcomic created by Howard Tayler. Players take on the roles of Tagon's Toughs and a variety of other characters while working to achieve scenario-specific goals.

Schlock Mercenary: Capital Offensive includes roughly one hundred pieces of original artwork, including top down floor tiles, plasma cannons, scanners, turrets, Teraport cages, and more. The game includes several scenarios, with more scheduled for release in future years.

Featured characters from the comic are Tagon, Elf, Schlock, Ennesby, Legs, Thurl, Kevin, Shodan, Elizabeth, Petey, and Partnership Collective Drones.