ELF Corporation (エルフ or élf) was an eroge studio. One of its most popular games was Dōkyūsei, a pioneering dating sim, which had a sequel, and was turned into video and TV series. The character design of the main villains from the -saku series is the company mascot.

[From Wikipedia]

In October 2015, Elf announced it was closing for business. Its final title, Maro no Kanja wa Gatenkei 3, ended with a credit roll listing all the titles the company had released up to that time with release dates, which concluded with the English message "Thank you for the last 27 years."

The website remained up until 31 March 2016 and had closed by April, all prior web pages referenced have to be viewed through archive.org.

Publishing rights to the company's back catalogue are currently held by DMM who have re-released and remade many of the company's most popular titles (including Doukyuusei, its sequel, and subsequent spinoff series Kakyuusei). YU-NO is held by MAGES., who remade it 2017 for PS4 and Vita, and later PC and Switch.