I absolutely love this game...I have about 10 accounts, (4 active)... im sure I'll have more b4 its done... the growth loop is just so addictively fun ! Its the only mobile game I still play and have been about 5 years with the game...I prefer the early game as the upgrades are faster, and having multiple accs i can let the top acc upgrade while I focuss on others... yes I have spent money on the game...but the sheer fun of it I'm happy to reimburse the developers... long may it live!