The game itself is an interesting idea. I think if I had played it without badge pressure, I would've given it a 4/5, so I will.
As for the badges, the Easy Badge is quite rightly name as such. The Hard Badge... isn't too hard. It should be 200 seconds, Mouse Mode. Might not make enough of a difference to some, but it gives a little more challenge for those that laze along. The Impossible Badge? Wow, that was hard. That was right named.
A very well made game. The fact you only need a mouse makes control simplicity a given. It's also not the easiest game out there; have fun trying to keep up with all the humans while feeding your babies in the later levels. The general content in this game is also funny enough to help keep you really entertained along with the gameplay itself.
I would consider this a 5-star flash game.
 "Line Game"){kind=icon}
 "The Kongregate Status Calculator"){kind=icon}
 "Nuclear Eagle"){kind=icon}