I have to be honest, this game just wasn't for me. I didn't really enjoy it. I understand the concept behind it, and I'm sure other people might get more out of it. But I thought the level design was great, it really feels like an endless corridor.
I understand that, on the other hand, your game was precisely for me! Its quite hard to believe that a BILLION pigs are slaughtered every year... anyways, great twist, and execution overall was nice
