You cannot expand beyond 6200 storage capacity, as the cost for the upgrade goes beyond your current capacity.
A downloadable game for Windows
A chill isometric idle game based on mining resources to improve your ability to mine more resources. Basically it's like Dwarf Fortress without the complexity (and without the dying horribly in fire all the time).
Instructions: just download the .zip, unzip everything, and then run the .exe file.