Sunken Fossil World
| Sunken Fossil World | |
|---|---|
| Developer(s) | Twilight Frontier Team Shanghai Alice |
| Publisher(s) | Twilight Frontier |
| Series | Touhou Project |
| Platform(s) | Windows, Nintendo Switch |
| Release | Windows
|
| Genre(s) | Bullet hell, platform, boss rush |
| Mode(s) | Single-player |
Touhou Gouyoku Ibun ~ Sunken Fossil World (Japanese: 東方剛欲異聞 ～ 水没した沈愁地獄; lit. "Strange Tale of Avarice ~ Submerged Hell of Sunken Sorrow") is a shoot ‘em up platformer game developed by Team Shanghai Alice and Twilight Frontier numbered as the 17.5th game of the Touhou Project series. Sunken Fossil World was fully released on October 22, 2022, featuring new playable characters with its semi-full release on October 24, 2021 at Autumn Reitaisai 9 after two demo releases prior on October 6, 2019, and October 18, 2020. On the official website, it is described as a "horizontal side-scrolling danmaku water action game". It consists entirely of boss fights unlike the pre-boss and boss fight stage structure found from most Touhou Project games.