Just took 2 stars off. It's still a nice game that you can play without spending real money. BUT after my last review about the laboratory algorithm, it just got worse! I unlocked mystery animals, put them to breed, waiting time 34 HOURS!! And when time ran out, i receive common animals that you can get for 30 MINUTES waiting time?! What's up with that? Totally bullsh*t! 34 hours waiting is already way too long, but then give us a common animal that we get for 30 min?? I'm done with this game..