Popular games published by company Hertz

Maddening... Your sister has been abducted by mutants. But where have they taken her? And why? Travel through four fantastic worlds of fire and ice to find her. Call on your basic psychic powers to overcome dangerous monsters and deadly machines. Along the way, you’ll pick up ESP skills. Use them to wrench your sister from the clutches of the evil mutants. And use them well. Your life - and your sister’s depend on it! Can the powers of ESP overcome the powers of Evil?

Hydefos is a shoot 'em up with smooth scrolling, a rarity on the MSX, where the scrolling is usually choppy, and a feat developer Hertz had already accomplished on a previous title, action platformer Psychic World. You pilot one of five ships through levels featuring branching paths, so two play-throughs could be different depending on where you go.