Talk:The Grotto/@comment-37446926-20200111165528/@comment-30175469-20200111174945

Comes from rng, the fact the lab is the only expansion a largo can escape to without being a quantum largo, the tunnel being the easier of 2 to escape through, and the fact they are well fed.

Well fed means hunger defining drive isn't a thing drawing them back for food, the fact the tunnel is accessible and they fit in it means their wandering ai may draw them into it. Rng happening to get the path neccessary to escape, and within the time period before hunger drew them back to a garden.