Initially, the company focused on creating general adult games. The brand name is derived from the meaning of “visual entertainment”. is an independent manufacturer from Heart Electronics Industry. After launching as a new brand of Heart Electronics Industry in 1992, I-One Co., Ltd. It is notable for developing eroge video games with 3D graphics. Illusion ( Japanese: イリュージョン, Hepburn: Iryūjon) was one of the adult video game brands of Japanese company I-One Co., Ltd. ( Learn how and when to remove this template message) JSTOR ( November 2020) ( Learn how and when to remove this template message).If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. The topic of this article may not meet Wikipedia's notability guidelines for companies and organizations.