Casper

You are Kat Harvey, the daughter of a paranormal expert. You've just met a friendly ghost named Casper, and you're getting to like him. But a pair of government agents are hot on both your tails! And if they catch you, who knows what they'll do to ghosts like him? You can't dwell on this much longer - you've got to protect him, and quick! Based on the movie, Casper has you collecting items while trying to protect your namesake ghostly friend from the wrath of government agents. (mobygames.com)