Valis

Valis (ヴァリス, Varisu) is a platform game series developed by Telenet Japan. The original game was developed in 1986 for the PC-88, and its popularity has spanned four sequels, a spin-off, and remakes across several platforms, notably the TurboGrafx-16 and Sega Mega Drive until the early 1990s, when it was quietly retired. The Mega Drive/Genesis entries were all published in North America by Renovation Products. Later, Telenet licensed the series' rights to a company known as Eants, which re-tooled the series as a hentai game, which became the last game published by Telenet before it shut down in 2007; after Telenet was shuttered, Sunsoft bought the rights to Telenet's full library, including Valis.