Hydefos, developed by Hertz for Microsoft MSX2, is a distinctive scrolling shooter game renowned for its smooth scrolling, which is quite unique for MSX platform games typically known for choppy scrolling. The game offers five different ships for the player to control. Its levels have multiple routes, lending each gameplay a unique edge depending on the path chosen.
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.