Still dont think so. I doubt that they had a full team at the begining. And to be honest, the game itself is made up of following elements:
- A couple hundred of AI texts
- 30 different items
- 3*3 alien character models which all share the same animations
- About 15 different Ships
- 1 space station and 1 cargo ship model
- One procedurely generated and very limited terrain
The logic itself is rather easy and just seeded, I’ve seen UE materials which were more complex then that 
All together that game is not something which would require more then 2 developers at all. Others would just be creating meshes and writing texts. Not saying it’s bad, it’s actually really fun to play. But after about 20hrs it just gets very boring due to the lack of content.