These six collectibles are found in the various ways described below. The Genesis cart itself is what unlocks the Eternal Slip mini-game for the final two achievements below.
•MD Cart 2 - SW Reja Forest: Complete Bunny Catching sidequest.
•WM Cart - Reja Farm: Complete WaterMelon Growing sidequest.
•PS Cartridge - Mejo Rocks 2 (Part 1): The only chest in this area.
•MD Cart - Jungle: Examine the Genesis console in the house.
•Genesis Cart - Canyon 2: In a chest up a Liane slide (requires backtracking with Meteomobile).
•32x Cart - Hideout: Tell the kid in the armor shop that you own a Black Mushroom