

Things changed with the release of the first 3D graphics game, "Confinement", and "Makai" featuring heavy 3D graphics characters and backgrounds on February 14.

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) is a one of the adult video game brands of Japanese company I-One Co., Ltd.
