Meh. Energy-based money grab if you ask me. At least once you get to a certain point. Not only that, but if you do spend money you better be prepared to spend at least $20. There aren't any "cheap" packages worth buying. That is, the cheap packages won't get you very far. If you like games that you can only play for 20 minute increments/about an hour a day total because you have to wait on energy refills, this is your game. If it simply wasn't energy-based, it would be improved 1,000x over.