Assassin's Creed and Adventure Time with Finn and Jake Crossovers
Ooo and the Animus by MrJaffaJack - The Fanfic Fella reviews
Life was going positively swell for Finn the Human. Alas, trouble hounded Finn, so when he and his friends banded as a study group to research a long forgotten island called Italy, trouble converged, and changed his life forever - opening his eyes to the cruelty of the world, and that of another path...
Rated: T - English - Adventure/Romance - Chapters: 3 - Words: 3,877 - Reviews: 4 - Favs: 3 - Follows: 3 - Updated: 11/26/2014 - Published: 11/1/2014 - Altaïr, Desmond M., Finn, Jake
Finn the Red (preview) by sonicthehedgehog240 reviews
I don't know what you will think of this but it's not going be exactly like black flag. There are no guns only; cannons, magic, swords, ax, etc.
Rated: K+ - English - Chapters: 1 - Words: 238 - Reviews: 4 - Favs: 1 - Follows: 1 - Published: 4/22/2014 - Complete
The Young Hero, the Animus, and the Assassin by panjerry reviews
Finn, Jake, Princess Bubblegum, and Marceline discover the Abstergo facility on an isolated land miles and miles away from mainland Ooo. There, Finn discovers the power of the Animus as he learns the way of his Assassin ancestors, and learning secrets.
Rated: T - English - Adventure - Chapters: 6 - Words: 6,669 - Reviews: 43 - Favs: 27 - Follows: 33 - Updated: 3/28/2012 - Published: 10/23/2011 - Altaïr, Finn