Reddit reviews Game Boy Printer

Gameboy Printer

It seems OP is playing the original Gen I games, and not the re-released ones.

They don't, well they did for the gameboy. http://www.amazon.com/Game-Boy-Printer/dp/B00004W4EC

You should probably pick up one of these

Uhhhh, Game boys had all that stuff too.... Just in janky 5 coloured pixels aside from the later GBA Internet

Nintendo was always trying out weird shit before it was cool.... Or feasible. LoL Virtual Boy. Their VR was so bad it actually killed the poor guy that designed it! RIP Gunpei Yokoi! Even had a pseudo wi-fi where game boy colors within 5ish miles of each other could find one another with an attachment. Later, it could connect to SNES systems using Xband and SatellaView too! There was even a special Zelda cart (BS Zelda, or broadcast satellite) put out that was like their first half assed attempt at an MMO (basically plays like Four Swords, if it lagged horribly) Had to feel bad for them sometimes, they'd launch something that failed spectacularly only for someone else to make a billion dollars off a near similar idea 5 years later. (In this case, two someone elses, Cold Tea with Fantasy Online and Toonslab with Graal Online, which had quite literally ripped off a ton of their sprites from both NES and SNES versions. They both moved their HQs to China so as to avoid prosecution. Fucking ouch, man!)

Yes you can, for cheap too:
http://www.amazon.com/Printer-Paper-Game-Boy/dp/B00002ST2R

If you can't find your printer you could get one for about $30:
http://www.amazon.com/Game-Boy-Printer/dp/B00004W4EC

You may or may not use this, but it's fairly easy to interface an arduino with a Gameboy Thermal Printer, which can be had online for $10-20. http://www.amazon.com/Game-Boy-Printer/dp/B00004W4EC

Great solution if you anticipate any need to print, as it's super cheap and portable (battery powered).