[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/Twilight_Frontier_logo4_964.png]]

Twilight Frontier (黄昏フロンティア), 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 [[FanWorks 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 ''Franchise/TouhouProject'', and [[Creator/Ryukishi07 07th Expansion]] of the ''VisualNovel/HigurashiWhenTheyCry'' fame.

Some of circle's most notable titles are the ''VideoGame/EternalFighterZero'' series of {{fighting game}}s, the official Touhou fighting games such as ''Touhou Suimusou ~ Immaterial And Missing Power'', and various fan-made ''Touhou'' games based off other popular video game franchises.

Twilight Frontier's website can found [[http://www.tasofro.net/ here]] (Japanese).
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!!Doujin games developed by Twilight Frontier:
[[index]]
* ''VideoGame/EternalFighterZero'' (2001) -- A fighting game featuring characters from various visual novels by Key Visual Arts.
** ''Eternal Fighter Zero -RENEWAL-''
** ''Eternal Fighter Zero: Blue Sky Edition''
** ''Eternal Fighter Zero: Bad Moon Edition''
** ''Eternal Fighter Zero -Memorial-''
* ''VideoGame/TouhouSuimusouImmaterialAndMissingPower'' (2004) -- A fighting gaiden game to ''VideoGame/TouhouYouyoumuPerfectCherryBlossom''.
* ''VideoGame/SuperMarisaLand'' (2005) -- A ''Super Mario Bros.'' clone staring Marisa Kirisame. Also known as ''Marisa La''.
* ''VideoGame/MegaMari'' (2006) -- A ''Mega Man'' parody staring Marisa and Alice.
* ''Higurashi Daybreak'' (2007) -- A third-person shooter in collaboration with 07th Expansion. It was later released for Sony's [=PlayStation=] Portable.
** ''Higurashi Daybreak Kai'' (2007) -- An expansion pack for ''Higurashi Daybreak''.
* ''[[VideoGame/PatchCon PatchCon! Defend the Library!]]'' (2007) -- A real-time strategy game where Patchouli uses a team of five ''Touhou'' character dolls must protect her library from other rival dolls trying to ransack it.
* ''VideoGame/TouhouHisoutenScarletWeatherRhapsody'' (2008) -- A follow-up gaiden game to ''VideoGame/TouhouFuujinrokuMountainOfFaith''.
** ''VideoGame/TouhouHisoutensokuChoudokyuuGinyoruNoNazoOOe'' (2009) -- A stand-alone expansion pack for ''Touhou Hisouten ~ Scarlet Weather Rhapsody''.
* ''VideoGame/NewSuperMarisaLand'' (2010) -- A sequel to ''Super Marisa Land''.
* ''VideoGame/DynaMarisa3D'' (2011) -- A Touhou-meets-''Earth Defense Force 2017'' fan-game staring Marisa Kirisame.
* ''VideoGame/GriefSyndrome'' (2011) -- A beat 'em up game based on ''Puella Magi Madoka Magica''.
* ''Satori Komeji's Mental Education'' (2012) -- A ''Touhou'' puzzle game staring Satori Komeji.
* ''VideoGame/TouhouShinkirouHopelessMasquerade'' (2013) -- A gaiden fighting game to ''VideoGame/TouhouShinreibyouTenDesires''.
* ''VideoGame/TouhouShinpirokuUrbanLegendInLimbo'' (2015) -- Another fighting game spinoff to the ''Touhou'' series.
* ''VideoGame/TouhouHyouibanaAntinomyOfCommonFlowers'' (2017) -- Yet another fighting game spinoff to ''Touhou''.
* ''[[https://store.steampowered.com/app/961510/MarisaLand_Legacy/ [=MarisaLand=] Legacy]]'' (2018) -- The third game in the Marisa Land series, which features a multiplayer system.
* ''VideoGame/TouhouGouyokuIbunSunkenFossilWorld'' (2021) -- A 2D single player action game spinoff of the ''Touhou'' series.
[[/index]]
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