Mushroom Men: The Spore Wars
Collect all 81 meteorites to unlock unlimited radical-type weapon ammunition.
Find collectibles during game play. After the game is completed, select the "Gallery" option to view the unlocked art.
Successfully complete the game. Select the "Music" option to listen to the various tracks.
Successfully complete the game to unlock a new set of mini-games.
Highlight the flies and meteorite when the appear during the credits and press A to shoot them.
Strategy guides from GameFAQs