Hummm, not an easy question indeed...
After thinking a while, here is a small list with 6 names from Arcade and 6 from PC/Console.
From Arcade :
-
Wonderboy
-
Jackal
-
Gradius series & spin-off (
Salamander,
Parodius)
-
Cliff Hanger
-
Out Run
-
Metal Slug
From PC & Console :
-
Faery Tale Adventure II : Halls of the dead
-
Simon the sorcerer series
(the ones not available for the Amiga)
-
The Legend of Kyrandia series
(the ones not available for the Amiga)
-
Final Fantasy series
-
Super Mario series
-
The Legend of Zelda series
*some of the games are part of a series. If a port has to be considered, let's begin with the first one .