Rated 2/5: This game has some interesting story elements, graphics, and mechanics/upgrades but it's all ruined by the cost curve and luck which translates to requiring lots of idle time, real money, and/or friends.
Roadblock: Many tasks require having at least five friends in-game. You can pay real money to bypass these tasks.
Curve: The first few production buildings cost around 5-25k coins which isn't too bad given quests and generators. The next buildings cost 50-75-125k+ coins, an increase of triple the previous amount. The cost of opening the second area of the map is 70k coins. The best money generators in the early game would take 7 _days_ checking in every five hours to accrue enough money. You can pay real money to get the coins.
Luck: Several quests require collections of items. All of these items are obtained randomly as byproducts of doing actions that require energy. It's not clear which activities will give which random items.