Games like Agent XXL und das Geheimnis der Quadrate

If you finished Agent XXL und das Geheimnis der Quadrate, the closest matches are Irony Curtain: From Matryoshka with Love, Zack & Wiki: Quest for Barbaros' Treasure, Trover Saves the Universe, Mom Hid My Game! and Nuclear Titbit. All 8 share its adventure genre and are ranked by how closely their themes and modes overlap.