In order of the amount of time I spent playing them:

AD&D Cloudy Mountain
Utopia
Night Stalker
Shark! Shark!
Astrosmash
Swords and Serpents - no one ever seems to mention this great Imagic game
Beauty & the Beast
Dracula
Atlantis
Lock n Chase
Demon Attack
Snafu
B17 Bomber
Triple Action for the Biplanes
Happy Trails/Locomotion