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Marine Benefit

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東方海恵堂 (とうほうかいけいどう)
Marine Benefit
Marine Benefit

Primary-Color Space (原色空間)


Primary-Color Space (原色空間)


~2009 (flash game)
9 May 2012 (port)
5 August 2013 (final update)


Vertical Danmaku Shooting Game


Single-Player Story Mode


Windows XP/Vista/7

Official Site

Internet Archive link

Touhou Kaikeidou(Ocean Blessings Hall) ~ Marine Benefit (東方海恵堂 ~ Marine Benefit) is a Touhou Project fan game made by Primary-Color Space. It has an oceanic atmosphere reflecting some false predictions that Ten Desires would have an underwater theme.


Marine Benefit features three playable characters to choose from, each of which has three shot types to choose from.

The game features 'Oxygen' and 'Hydrogen' items which, when enough are collected, grant extra lives and bombs respectively. Hydrogen items are also important in that the marker which indicates how many you have also acts as the game's point of collection.

Grazing is also important as it increases Oxygen.


Suddenly, a lake in Gensokyo expands into a small, salty sea. Not happy with this turn of events, the heroine sets out to discover the incident's perpetrator.


Marine Benefit features all original music which mimics ZUN's style. As of Jan 10 2014, Crystalwings began to release remade versions of the music for Marine Benefit. Volume 1 (which features all of the stage themes, the title screen and an unused song) is available to download from its Yahoo blog. Volume 2 has also been released, containing all boss themes and two unused songs for Omniverse.

Additional information


External Links