Nightshadeis a romance visual novel game that was developed for the Nintendo Switch platform by Red Entertainment in collaboration with D3P Otomebu. The game is set in Japan after the Sengoku Period and revolves around the romance between the protagonist and the other main characters who are all Ninjas. The character design and illustrations are by the renowned illustrator Teita.

The game features a compelling tale of conflicting loyalties and offers players the chance to follow the romances between the protagonist and the other characters. The story is fictional, but several characters and events are factual, making the novel enjoyable for those interested in Japanese history. The game has fully voiced characters, including popular voice artists in Japan, but the protagonist is not voiced.

Nightshadehas two endings for each of the five main characters depending on the route the player takes. The ending movie and music change according to the final outcome of the player's choices. The game is an excellent choice for gamers interested in the adventure and romance subcategories.