Hobby aquariums are just like board games: except wet, fishy, and you can't play them.
Personally I'm torn. I enjoy the first game quite a bit: The Walking Dead: The Board Game. It plays great without minis. Every game doesn't need minis and this is one of those games. However, I'd be more inclined to buy this if it were a straight expansion, but it sounds like a stand alone game...I don't know if I need more of the same (give or take).
I see now the rules say you can use the prison as the last stop of the first game. Maybe I'll bite...great price for sure.
Ouch - 5.70 rating though...
There are 4 ratings...but the original isn't much higher. I rate it about a 6.5: a good solid game (w/ great artwork).