Porn Game: Mystic Isle - Version 0.1.1 by Dotonbori Technologies

You play as Saki, a female game developer. She is tasked with updating an old game, so that it will run on newer devices. However, when she runs it, she accidentally summons a creature who calls her "The Chosen One". He will take her to Mystic Isle, where she is regarded to be the next "Chosen One". During her time at Mystic Isle, Saki will meet many characters and the player will unlock many hentai scenes!

Mystic Isle - Version 0.1.1 by Dotonbori Technologies game preview

online.