An extensive overhaul, emphasizing detailed and realistic chemistry, materials, and production. Extends the base game to marathon-style complexity.
Large total conversion mods.
| Version | Game Version | Download | Release Date | Downloads |
|---|---|---|---|---|
| 4.1.0 | 2.1 | Download | 9 days ago | 23 |
| 4.0.4 | 2.0 | Download | 2 months ago | 126 |
| 4.0.3 | 2.0 | Download | 2 months ago | 98 |
| 4.0.2 | 2.0 | Download | 2 months ago | 20 |
| 4.0.1 | 2.0 | Download | 2 months ago | 37 |
| 4.0.0 | 2.0 | Download | 2 months ago | 2 |