Sword of Sodan is a fantasy beat-em-up created by Discovery originally for the Amiga and released in 1988. Later the game was ported to Mega Drive/Genesis and Macintosh.
The game programmed by Søren Grønbech surprised the players with the biggest sprites ever seen on an Amiga game before (and after, most probably). In terms of gameplay, you could find better titles, but in 1988 the release of Sword of Sodan demonstrated the real difference between an 8-bit platform like the Commodore 64 and the Amiga. Excellent graphics - clearly better than the Genesis version, especially in terms of color palette - great atmosphere, digitized sound and speech, sword-slashing, weird animals, two heroes to choose from, and plenty of ways to die. Did I already mention the huge sprites?