Games like Mary: Mary-Hime no Dakkan

If you finished Mary: Mary-Hime no Dakkan, the closest matches are 3 out of 10: Season Two, You're Not Actually Supposed To Die (At The Tournament Of Death), Destroy the Porn, The Propahverse Trilogy: Episode I and The Insector. All 10 share its adventure genre and are ranked by how closely their themes and modes overlap.