Dipper and Mable were exploring Mt. Ebbot looming over Gravity Falls, investigating the rumors and legends of people being taken by monsters, never to return. Fortunately or unfortunately depending on your views, these legends were true and the Mystery Twins find themselves swept into a grand adventure! [Title Changed for Originality]

(Might change title later). The barrier around Mt. Ebott is gone. Frisk and the population of the Underground are ready to greet the light of the surface; they weren't ready, however, for the mysteries that would unravel in the little town of Gravity Falls. How will both monsters and humans deal with this new life? Read on to find out! (no specific pairings, btw).

(Splatoon/Undertale/Kirby/Gravity Falls Crossover) What if Agent 3 never went to Octo Valley? What if instead of the Great Cave, that hole out in the middle of no where led to a realm filled with monsters? Chara and Frisk knows somethings off about this RESET, especially since something interrupted them and called itself a demon. This...is going to be harder than Flowey thought...

Fight or spare. Kill or save. Salvation or destruction. When Mabel Pines fell into the Underground, she had two choices. And the fate of everyone she met depended on what choice she made. (An Undertale/Gravity Falls AU staring Mabel as Frisk! Massive work in progress!)

sequel to undertale : tale of two souls. a few weeks after the monster freed. all was well till a certain demon got freed from his prison set from dipper and mabel vs the future

Dipper and Mabel find themselves falling down into the depths of the mountain; it holding mysteries and secrets that were hidden away in the lore and history books in the town that they live in, at the base of the mountain. Accidentally falling down, the twins find themselves in more mystery and danger than either of them had wanted. A Gravity Falls and Undertale Cross-over.

Dipper and Mabel were adventuring in the darkside of the wood and they accidently fall down into a hole little do they know that the greatest adventure of their lifetime is ahead of them . undertale belong to toby fox and gravity falls belong to disney

Frisk is running in a forest away from "something" when she meets 2 twins. They have to unite to defeat Bill and bring Flowey back to normal.

What if Dipper fell into the mountain in which Undertale occured and met the characters in the Genocide timeline? What will the outcome be? Not good, that's for sure...Rated K. Rating may change in the future.

After having a fight with her twin brother Dipper Pines, Mabel runs away towards a mountain, to get away from him and the harsh reality. Upon reaching the mountain, she accidentally stumbles down a deep hole. Who knew that underneath the mountain, lies a great mystery?

Summary in beginning of chapter-Also published on AO3 Please feel free to leave any feedback or comments

Stan knew of the mysterious children disappearances around Gravity Falls' Mt. Ebott. So, he did the best he could to stop Dipper and Mabel from going there when they came to Gravity Falls, and protect them from the dangers of the town. CO-WRITTEN WITH Sallymeow1! GIVE US YOUR FEEDBACK and THANKS IN ADVANCE!