I loved George's model but wanted something a little more snug.
To achieve this, I got the inside dimensions of the Gameboy Cartridge slot and added it to the model base.
I also created a tall version for extra protection.
Prints with NO SUPPORTS
Works well with the Dust cover for the analog pocket cartridge cover by NightHawk3D
The author remixed this model.
Note: The insert does not touch the cartridge PCB contacts.