In reply to AW:
>Weren't you working on a game at one point Matt?
Not me. I don't have the programming know-how unfortunately.
When there was talk of a Repton Infinity-alike for RISC OS (probably ten years ago now) I got involved to some extent because I did do a couple of games on the Electron version, and fancied having a go on a fancier RISC OS version, but it never saw the light of day AFAIK.