Suggestion: Have uranium as a resource and nuclear power plants would need it and make them produce twice the power. Make a building called a missile silo and players could launch a missile that would do a lot of damage but would cost uranium and energy. Have a save game feature and a pause feature in sandbox mode. Make a Barracks building that could produce infantry units.
Bugs:Sometimes it says food deficit after a night for a few seconds and there is not.
It Lags really because of all the moving parts.
Resources only go up to 999 which gets annoying in sandbox mode.
overall it is a good game just needs more features 5/5