From Visual Novel Database:

https://vndb.org/v24655

Developer and publisher: Stegalosaurus Game Development

Released on February 2016.

Steam trading cards consist of 6 artwork, each with a set of different character sprites on a portrait.

Steam profile backgrounds consist of 6 artwork, each with a different character sprite at either side or both sides on a black background.

Soundtrack DLC contains 20 BGM.

Initial gameplay video with author narration and commentary on YouTube by MoshCow Productions

Full review of game:

www.sinicalanimenetwork.com

Army of Tentacles: (Not) A Cthulhu Dating Sim is a supernatural parody visual novel with RPG elements by Stegalosaurus Game Development. It features a female or male protagonist by the name of Perry Hollycraft who is tasked to lead the Deep Ones (subterranean dwellers living in a remote volcanic island) to conquer the inhabitants of Innsmouth, a small coastal town in New England. The New Game+ DLC features romance and dating sim elements. In this expansion, Perry Hollycraft is in a dream where h

Steam store page:

https://store.steampowered.com/app/427930/Army_of_Tentacles_Not_A_Cthulhu_Dating_Sim/