When Mabel learned Dipper was going to be taking Ford's apprenticeship, she ran off to the woods in tears and ended boarding a mysterious train that had appeared. The rest of her family soon followed when they realized she was missing. Will the Pines be able to find each other and work out their problems? Or will they be trapped on the train forever?

The extended Pines family - and, of course, their chosen place of residence - is weird. A part of Dipper has worried, ever since that first summer in Gravity Falls, that this unavoidable - and deeply cherished, of course - aspect of his life might be a dealbreaker for whomever he ends up loving and being loved by. He needn't have worried. Not with Tulip Olsen, at any rate.

Thank you for choosing to take the Infinity Train today. Next stop: Gravity Falls, Oregon. Enjoy meeting your cousins, Tulip! Try not to get kidnapped by gnomes, okay?

Tired of the progress made by the Pines twins, Bill decides to put them through the ultimate test. One of quite the infinite proportions.

Time Travelers Pig AU! Two sisters from another mother...and another timeline, must now duke it out to ensure their existence, and the safety of their parents and the world!...while their confused and mortified parents are caught in the middle... Wendip and Dipifica! Gravity Falls x Infinity Train x multiple crossover! Inspired by Markmak. Chapter 4 now re-written!