The concept of the game is fun and addicting. But I’m gonna exactly what the other reviews said. Needs more content. 4 buttons get boring after a while. You should add more planets, more resource types, and most importantly, MORE UPGRADES!! I mean, you could have trucks have a resource capacity, and have to dump off their load when their full, and add capacity upgrades, or, increase the value of the resources in an upgrade. The possibilities for this game are endless, but only if you take notice to the players, and use the suggestions.