Enjoy content exclusive to the Nintendo Switch version in Terra Incognita: ride a Great Sabrecub, slay foes for Pixel Blocks, and use them to build a Dragon Quest Game Pak so you can access more items for building! (mypotatogames.com)
InfoGenius had a line of organizer, spell check, travel guide, and other assorted game paks for the system that turned it into a semi-inconvenient pre-PDA, but it was Fabtek that wanted to go the extra mile and turn the Game Boy into a proper mobile workstation. (pressthebuttons.com)
Heck, the basic business practice behind Pokemon revolves around the inability to obtain every single Pokemon by yourself or with a single game pak. (toy-tma.com)