Having one roach-tan around the house eventually leads to having more, and then you'll be kept awake with the disturbing sounds of all of them skittering around at night.

On the plus side though, they'll survive a nuclear war and keep moe alive in the world.

Don't forget the part where they turn on and eat their wounded...then again, considering the way these are to "eat the wounded" might have whole different meaning now...

And in the aftermath of a nuclear war, they'll be bigger and more...accessible, too.

I think the game beside Bioshock might be Fatal Frame.