Sphere, The Knight of Elf

Sphere, The Knight of Elf is a Japanese erotic fantasy RPG made using the RPG Maker toolkit. The player controls Osmond, a man who used to be a famous knight but has since stepped away from the limelight. One day, Osmond meets a beautiful elven knight named Sphere who is searching for clues as to the whereabouts of her missing friend. The longer Sphere's search takes, the more desperate she becomes to find her friend, resorting to exchanging sexual favors for information. Depending on Osmond's actions, Sphere may find herself in a variety of dangerous situations, including being raped by monsters, or humiliated by being paraded through the town naked.

Players control Osmond from a bird's eye view perspective. In combat encounters, which are turn-based, the player selects the desired action from a pop-up action menu. Items such as recovery potions can be used to restore health. Outside of combat, the player may also choose from a selection of responses when conversing with Sphere, which may lead to different outcomes.