After a few attempts I've gotten all five resources to increase. Took me until 84 people to pull it off. It was a lot of fun, boiled down some things usually seen in big games down to a small one.
A bit more information at the start would be nice. I found metal to be excessively easy to get and calculating the offsets from increased population was a bit annoying (especially since it made some building that "gave" those resources absorb it). An auto-pause when you land on a planet would be nice. I hit spacebar every-time I landed so I would have time to read the buildings. Overall the game's polish is really good.