Before getting my A600 I had a Sinclair ZX Spectrum 128k with built in cassette drive.
I had a platform game on it called Wizard Willy which i'm trying to locate.
googling for it has never been fruitful over the years i've periodically searched.
There was also a lightgun multigame cassette that had missle ground zero, bullseye and two other games on it. would love to find that too!
EDIT- Didn't know if this was suitable for retrogaming section as it's non amiga, so posted here... feel free to move it there though if it's relevent