The “Cosmic Storms” expansion for Stellaris, released on September 10, 2024, introduces dynamic cosmic phenomena that bring new strategic elements to the game. This expansion adds eight types of cosmic storms—including electric, particle, gravity, and nexus storms—that randomly spawn and move across the galaxy, presenting both dangers and opportunities. The storms grow and shrink over time, affecting gameplay in unique ways.
A major new feature is the “Storm Chasers” origin, where empires believe enlightenment comes from interacting with these powerful cosmic forces. Additionally, the expansion includes three new civics—Astrometeorology, Storm Devotion, and Environmental Architects—allowing players to specialize their empires in storm-related technologies.
Other key additions include:
- New precursor narratives, unlocking relics tied to ancient storm-controlling civilizations.
- Storm-based technologies and Galactic Community Resolutions.
- A Weather Forecast Map Mode, which helps players manage the unpredictable storm systems.
The expansion was released alongside the free 3.13 “Vela” update, which improves several game mechanics like the Thrall and Prison worlds, UI, and more
