Donkey Kong Rumble&Mario Worlds 

Game: Donkey Kong Rumble  (DL @ bottom of page)
Type: Adventure
Size: 2.75MB
Developer: Freakzone Quick Review:  Donkey Kong Rumble is a nice PC version of Donkey Kong, but it is hindered by a few bugs and not-so-great gameplay.

Game: Mario Worlds  (DL @ bottom of page)
Type: Platformer
Size: 2.8MB
Developer: Veratul Et Al Quick Review:  This is very much one of the smoothest computer Mario remakes.  It is a very well-designed game, but unfortunately it does not feature a save option.
Requirements:  Unknown