Originally Posted by Mark Wright
I think it's widely agreed that Mindwalker was the first "leisure" retail release for the Amiga, in the USA.
AFAIK the first commercial release was "Monkey Business", by Other Valley Software, a Donkey Kong clone.
Peter Olafson, who I believe was a writer for Amiga World, asserted as much ages ago.
It also holds the dubious honor of being effin impossible to find a copy of.
(I've seen a youtube vid of the ST version.)