Required
Open project Create Aeronautics
Matched file: 1.2.1+mc1.21.1
Ready to install?
Create Cosmonautics 1.3.8-rc.8
Check the game version, loader and dependencies below, then grab this exact release.
Modrinth release
cosmonautics-1.3.8-rc8.jar
1.3.8-rc.8
- Game
- 1.21.1
- Loader
- NeoForge
- Published
- 5 Jun 2026
- Channel
- beta
- File size
- 11 MB
SHA-14fd59d382bfe192c7a43e89277e74af1efe2d279
Where this file goes
Client, server, or both?
Client Optional
Dedicated server Optional
The source marks this as usable on both the client and server.
Dependencies for this release
What else does it need?
Required
Open project Dimensional Sable
Matched file: 1.1.0
Required
Open project Create
Matched file: 6.0.10+mc1.21.1
Required
Open project Sable
Matched file: 2.0.6+mc1.21.1
2 optional, embedded or incompatible relationships
- Create Aeronautics optional
- ImGuiMC optional