/10 with 4 votes
In the console version there are two references in the backgrounds of levels to the popular Nicktoon Invader Zim. The first appearance is in the Fort Crabclaw level (Zim's Voot Cruiser), and the second is in Summit Storm level (Zim's house).
/10 with 3 votes
Some of Fentons' ghost technology is seen in this game, e.g. in console version the Fenton RV and Fenton Peeler and in GBA version the Fenton Radar.