Similar to Limbo and Inside, Somerville is an adventure game played from a third-person perspective with platform game-like elements and physics-based puzzles.

In his dying moments, the soldier reaches out to the man, who clasps his hand and is imbued with the power to manipulate the blue alien energy.

He is found by other survivors taking shelter in the storage rooms beneath a grocery store, and is reunited with his family and dog.

The soldier guides them to a church, and they climb to the top of its bell tower, where an aircraft sent by the military organization arrives to pick them up.

Unfortunately, an alien vessel notices them and fires at the tower; the soldier and the man manage to board the aircraft, but it is forced to depart prematurely to avoid destruction.

The man and the purple soldier enter a cannon that harnesses their powers to launch them at an opening in the main alien vessel.

The man awakens in his home alongside his family, as if the previous events were merely a nightmare, but he soon discovers that he is in a simulation generated within the main alien vessel.

First, he may enter the simulation, surrendering to the aliens to be with some semblance of his lost family again; the post-credits scene shows the false house surrounded by a still sea, and it is unlit and seemingly devoid of life.

Second, he may ignore the offering, and appears to sacrifice himself to destroy the alien entities and defeat the invasion; the post-credits scene shows the dog sitting alone in front of the family's now-overgrown house, with fallen alien vessels crumbling around it, and as an unseen craft approaches the house from above, the dog looks up and wags its tail.

Following Inside's release in 2016, Patti left Playdead, stating he felt he had helped bring the studio to a point where it could stand on its own.

[7][8] On June 27, 2017, Patti announced that he had formed Jumpship along with UK film animator Chris Olsen, and that they were working on a game titled Somerville.

[11][9] The game was described as a "sci-fi action adventure that chronicles the lives of key individuals in the wake of a global catastrophe".