: Added levels 13, 14, and 15, named "An Exercise in Futility," "The Definition of Insanity," and "Inner Circle of Hell".

: Features the classic 4-player top-down co-op, full friendly fire, and the community-driven "Galactic Campaign". File Context: ".part1.rar"

: You generally need all parts in the same folder and a utility like WinRAR or 7-Zip .