Released on March 13, 2018, the Making History Expansion for Kerbal Space Program introduces a mission builder, a history-themed content pack, and over 70 new rocket parts, with support for nine languages. The expansion features both a "Mission Builder" for custom scenarios and a "History Pack" with real-life inspired missions, alongside new launch sites and astronaut gear. Explore the official expansion details on Steam . Making History - Kerbal Space Program Wiki