Gravity Falls is now on 3DS with the new Legend of the Gnome Gemulets game that came out October 2015. Rated E for Everyone.
Disclosure: I received a copy of the game for feature.
This game will be a fit for anyone who is a fan of Gravity Falls on Disney XD. It’s not a rehash of the show though. A brand new original adventure was created for the game. The storyline involves players in a mystery adventure where they need to help Jeff the Gnome retrieve the ancient Gnome Gemulets and restore magic to the Gnome forest.
Players play as both Dipper and Mabel Pines in dual character gameplay (switching between characters throughout the game to use the unique powers of each.)
Players will play as both Dipper and Mabel Pines in dual character gameplay switching between characters at any time to use their unique powers and
abilities given through the power of Gnome magic. Dipper is bestowed with Gnome Battle Cuffs which deliver powerful punches at close range, and keeps
his trusty flashlight by his side to shed light on the many mysteries in Gravity Falls. Mabel wields the Fleece of Bezazzlement that lets her whip her sweater sleeves to attack monsters from afar, and her grappling hook is at the ready to help access areas otherwise out of reach. Dipper and Mabel will complement one another as they will unravel a mystery to learn more about the inhabitants of Gravity Falls and unlock secrets of the town’s past.
You can find out more info on the webpage.