You played this little white knight fella who wandered around picking objects up and solving puzzles, casting spells and the like. They were awesome, very addictive.
There was another series of games that were similar, starring a disfunctional family - I think the title had "Wally" in it, but the name escapes me. It was kinda 2-d scrolling, picking up objects and completing puzzles, adventure type thing. I remember there was a lot of humour in these games, it was were most of the appeal came from.