Gravity Falls: Arach-No!

Gravity Falls: Arach-No! is an adventure/action platformer released in 2013 for the XBOX 360, PlayStation 3 and Wii. It was produced by Quarantine Development with assistance from Avalanche Software. A Wii U port was planned, but fell under due to Quarantine going out of business.

Plot
Dipper and Mabel discover a mysterious cave by the lake. Both wind up falling into it and getting lost, with the former blaming the latter, who stresses her innocence. They run afoul a colony of sentient spider-like monsters and must work together to escape.

Gameplay
You play as both siblings. As a single-player campaign, you switch between characters while in a two-player campaign you control both simultaneously. The gameplay relies on crossing large gaps and protecting yourself and your partner from enemies, while also gathering items and saving trapped people.

Reception
The game received mixed to average reviews. The gameplay was criticized for being repetitive and the camera angles were criticized for being unpredictable. However, critics praised the art style, story and dialogue.