You play as a corporation trying to make the red planet habitable. There are hundreds of project cards so every session forces you to adapt your strategy to what you draw. The rules are straightforward enough so you can explain it to your neighbour in five minutes. The whole thing flows really well once everyone understands the basic flow of a turn. Some turns will leave you staring at the board trying to find the best move. It is definitely worth having on your shelf if you host game nights regularly.