Required
Open project Create Aeronautics
Matched file: 1.3.0+mc1.21.1
Ready to install?
Create Cosmonautics 1.4.0rc1
Check the game version, loader and dependencies below, then grab this exact release.
Modrinth release
cosmonautics-1.4.0rc1.jar
1.4.0rc1
- Game
- 1.21.1
- Loader
- NeoForge
- Published
- 23 Jun 2026
- Channel
- beta
- File size
- 12 MB
SHA-1e6fff6b9b1eaaced6f01e46ab0d2ffc7ac64cad3
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 Create
Matched file: 6.0.10+mc1.21.1
Required
Open project Sable
Matched file: 2.0.6+mc1.21.1
1 optional, embedded or incompatible relationship
- ImGuiMC optional