Hydlide is an action role-playing game developed and published by T&E Soft. It was originally released for the NEC PC-6001 and PC-8801 computers in 1984, in Japan only; ports for the MSX, MSX2, FM-7 and NEC PC-9801 were released the following year. A Nintendo Switch port based on the PC-8801 version was released on December 21, 2023 by D4 Enterprise.

Super Hydlide is an action role-playing game for the Sega Genesis/Mega Drive. It was originally released in 1987 in Japan only under the title Hydlide 3: The Space Memories for the MSX, MSX2, and PC-8801mkII SR. It's the third game in the Hydlide series. Ports were also released for the X1, Famicom, X68000, Microsoft Windows, and Nintendo Switch. The game was developed by Hydlide series veterans T&E Soft and released worldwide on the Sega Genesis / Mega Drive on October 6, 1989, in Japan, early 1990 in the United States, and 1991 in Europe. This remake evidences substantial graphical upgrades to the original Hydlide 3, though the gameplay remains largely identical. Before its release, it was called Hollo Fighter in some Sega advertising material and was one of the first third party published titles to be released in the U.S, the other being Air Diver.