When you finish mission 1.2 with challenge mode on you can keep the colony alive for very long. While there is no way to uncover new food, the game regularly tosses some fresh molecrickets onto your plate. They provide limited food, but food is food. When spent correctly a player can stay alive for a very long time. (My time was 1,5 hours of mission time roughly.)
It may be interesting to add a primitive score ladder or something for it so players can compete?
It may be interesting to add a primitive score ladder or something for it so players can compete?