Plot: Hydrofool is an isometric 3D action-adventure game released by FTL in 1987 for the ZX Spectrum and Amstrad CPC. It is the sequel to Sweevo's World. The game music was composed by Rob Hubbard, with the title track based on Abe Holzmann's Blaze Away! Wikipedia
Plot: The Heroes of Karn is a 1983 adventure game written by Ian Gray. It was released by Interceptor Micros for the Commodore 64, Amstrad CPC and ZX Spectrum. Music was written by Chris Cox. The Spectrum and Amstrad versions were adapted by David M. Banner with graphics by Terry Greer. Wikipedia
Plot: Halls of the Things is a video game developed by Design Design for the ZX Spectrum and released by Crystal Computing in 1983. It was ported to the Amstrad CPC amd Commodore 64. The player travels through seven floors of a tower, searching for seven rings, with each floor being a complex maze of corridors...
Plot: Hoppin' Mad is an action game released in 1988 by Elite Systems for the Amstrad CPC, Commodore 64, and ZX Spectrum The game takes place over 12 levels. On each level, the player has to guide a group of bouncing balls from the right edge of the level to the left edge. Wikipedia