David Neary on Twitter: "Is the post-credits sting to Scooby-Doo 2: Monsters Unleashed, in which Scooby reveals a special code to unlock things in the Scooby-Doo Game Boy vidoegame, an unprecedented moment
Scooby Doo 2: Monsters Unleashed (Video Game 2004) - IMDb
PC / Computer - Scooby-Doo 2: Monsters Unleashed - A Place for Almost Everything - The Spriters Resource
my friend's scooby doo 2 - monsters unleashed game : r/Scoobydoo