Twilight Frontier

Twilight Frontier, also known as "Tasogare Frontier" or "Tasfro" for short, is a widely popular doujin circle known for their quality doujin games of varying genres. The games developed by the circle are often derivative works of other widely-known games while few others were actually made in collaboration of other doujin circles, such as ZUN, the creator of the Touhou series, and 07th Expansion of the Higurashi no Naku Koro Ni fame.

Some of circle's most notable titles are the Eternal Fighter Zero series of fighting games, the official Touhou fighting games such as Touhou 07.5 ~ Immaterial And Missing Power, and various fan-made Touhou games based off other popular video game series.

Doujin games developed by Twilight Frontier:

 * Eternal Fighter Zero
 * Touhou 07.5 ~ Immaterial and Missing Power -- A fighting gaiden game to Perfect Cherry Blossom.
 * Super Marisa Land -- A Super Mario Bros. clone staring Marisa Kirisame. Also known as Marisa La.
 * Mega Mari -- A Mega Man parody staring Marisa and Alice.
 * Higurashi Daybreak -- A third-person shooter in collaboration with 07th Expansion.
 * Higurashi Daybreak Kai -- An expansion pack for Higurashi Daybreak.
 * Patch Con! Defend the Library! -- A real-time strategy game where Patchouli Knowledge must save her library from all sorts of mooks.
 * Touhou 10.5 ~ Scarlet Weather Rhapsody -- A follow-up fighting game of Touhou 10.
 * Touhou 12.3 ~ Hisoutensoku -- A stand-alone expansion pack to Scarlet Weather Rhapsody.
 * Dyna Marisa 3D -- A Touhou-meets-Earth Defense Force 2017 fan-game staring Marisa Kirisame.
 * New Super Marisa Land -- A sequel to Super Marisa Land.
 * Grief Syndrome -- A beat 'em up game based on Puella Magi Madoka Magica.