Hello there everyone, I've just recently reginsted with this web site. And I found a lot of great things. I acctual asked tthe creator of the flappy bird gameboy game to see if I could turn it into a game cart. He said sure and that some people here would.be interested in them. And I managed to make and label the flappy bird game. So if anyone is interested here. 
gameboy flappy bird game: http://youtu.be/2Q1LRVcecHU