I was always under the impression that Paul Shirley‘s classic Spindizzy originated on the Commodore 64 and was ported to other machines, but this interview with Shirley says that the game was actually originated on the CPC and ported to other systems. Since Paul Shirley coded the C64 version himself I had guessed that that was a logical assumption to make, but it now looks to be wrong.
The Amstrad version of Spindizzy – one of the best games ever made in my humble opinion – is pretty much perfect, with crisp, clean, detailed graphics and responsive controls.