Game Cartridges are used to unlock the 8-Bit Peter and 8-Bit Lois, and can be obtained in the following ways:
- Making Jerome Serve Health Drinks
- Making Peter Repair His Game Cartridge
- Making Senpai Peter Get a High Score
- Making Brian Kong Ride a Rhino
- Making 8-Bit Peter Walk in 2D
- Clearing 8-Bit Giant Chicken