Galactic Civilizations IV: Underworld
Descend into the galaxy's criminal underworld. Every civilization has an underworld. Will you suppress it, exploit it, or become it?
| Type | DLC |
| Developer | Stardock Entertainment |
| Publisher | Stardock Entertainment |
| Last Updated | 12/9/2025 |
| Steam App Id | 4130660 |
- Windows
- Mac
- Linux
About Galactic Civilizations IV: Underworld
Galactic Civilizations IV: Underworld is a Simulation and Strategy DLC developed by Stardock Entertainment. It was released on the Steam Store by Stardock Entertainment. Galactic Civilizations IV: Underworld can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this dlc app.
According to Steam’s category system, Galactic Civilizations IV: Underworld supports the following features:
- Playable without Timed Input
- Steam Cloud
- Family Sharing
- Surround Sound
- Co-op
- Save Anytime
- Stereo Sound
- Camera Comfort
- Downloadable Content
- Steam Achievements
- Multi-player
- PvP
- Single-player
- Adjustable Text Size
- Adjustable Difficulty
- Steam Workshop
- Custom Volume Controls
- Online Co-op
- Cross-Platform Multiplayer
- Online PvP
Media & Sceenshots
Explore the featured video and screenshots from Galactic Civilizations IV: Underworld featured in the Steam Store.
DLC & Related Apps
Galactic Civilizations IV: Underworld is referenced by 1 other related app in the Steam Store.
| Image | Name | Type | Release Date | Actions |
|---|---|---|---|---|
 | Galactic Civilizations IV | Game | 10/19/2023 | View |
Related Packages
Galactic Civilizations IV: Underworld is referenced by 1 package in the Steam Store.
| Name | Price | Actions |
|---|---|---|
| Galactic Civilizations IV - Expansion Pass 2 | $59.99 | View |