Hey, just in case anyone else is looking for entries that are actual, bona fide Game Boy games, here are the ones I've found:

• Dashy no Witch
• Popcorn Caravan
• Unfinished Space
• Crypt of the Gameboydancer
• Patrick's Pocket Challenge (mine)
  

Hope I didn't miss any!

And if anyone wants to know more about Game Boy development, check out this list of resources!