All players play the same random map for a chance to top the global leaderboards. PC System Requirements (2019 Edition)

Every mission is played in Ironman mode—there are no manual save/load points. If a single zombie breaches your defenses and infects a building, it can trigger a "cascade infection" that wipes out hours of progress in minutes.

The core experience where players are dropped into a randomly generated map and must survive for a set number of days until the final mega-horde arrives.

The aesthetic combines Victorian-era technology with a futuristic post-apocalyptic setting. Major Game Modes

A 60-hour story mode featuring 48 missions where players rebuild the human empire under the command of Emperor Quintis Crane.

The 2019 full release significantly expanded the game beyond its original skirmish roots: