Greed 2: Forbidden Experiments
This casual point-and-click adventure is a modest improvement over the first game in the series. Graphics and animation are much better. The hidden-object scenes are more complex, too.
However, the story is rather weak and poorly told, seemingly rushed and missing details. Was this the result of a budget cut to a game that was planned to be bigger?
Also note that in almost every respect it's not a real sequel to Greed: The Mad Scientist. It's narrative and style make it an independent game. If you're interested in a real sequel, see the third game in the series, Greed 3: Old Enemies.