Super Xevious: GAMP no Nazo (The Mystery of Gamp) is a unique evolution of Namco's classic vertical shmup. While it retains the core gameplay of bombing ground targets and shooting aerial enemies, it introduces a significant 'puzzle' element. To progress through the stages, players must solve specific environmental riddles or meet hidden criteria; failing to do so will cause the stage to loop indefinitely. This added layer of strategy transforms the standard shooter into a thinking man's arcade game. With its increased difficulty and mysterious lore, it provides a much deeper experience than the original Xevious.