Developed by Jon Ritman in 1983 for ZX Spectrum
Developed by RamJam Corporation in 1987 for ZX Spectrum
Developed by Probe Software in 1987 for ZX Spectrum
Developed by Gary Capewell in 1983 for ZX Spectrum
Developed by Melbourne House in 1989 for ZX Spectrum
Developed by Silverbird in 1988 for ZX Spectrum
Developed by Bulldog in 1987 for ZX Spectrum
