A few games are available for download here at CASA:
Valkyrie 17 - the remake (Windows)
The Land Beyond Time (Spectrum) - created in 1985 and completed in 2006, this two-part game by Simon Allan takes you to a distant land in a distant time. Full instructions are enclosed.
Wizard, What Wizard (Spectrum) - this is another of Simon Allan's offerings, written in 1985 and completed in 2007. This fantasy game caters particularly to adventurers new to the genre.