awesome guys. thank you so much for the info.

and my own project, which i don't have any details to share atm

edit -- brainfart typo

Ok, let's list them.

Krikzz project.

There's another project whose creator wishes to remain anonymous for the time being, to avoid being flooded with questions about when it will be done. (No, I'm not involved in this project.)

A DIY project. Unclear what happened to it. http://chipmusic.org/forums/topic/13256 … for-gbgbc/

Jose Torres' project. Vaporware. Nothing to see here, move on. Trust me. http://hackaday.com/2009/08/28/usb-gameboy-cart/

This project, which communicates directly with an SD card. Can't exactly be defined as an SD cartridge, since it requires a connection inside the Gameboy in it current rendition. http://zdoom.ic.cz/gameboy.html

Hi Matt,
I can´t believe it. So 2014 will be the year? And the other 3-4 versions? Where can I find those project. Just curious to see which one will make it into final production.

Thanks for the Reply

there are ~4-5 versions of this being worked on atm

Coming soon:
https://twitter.com/krikzz/status/420916756731809792

Hello guys,
I´m a hobby chipmusic artist and all my prayers have been heard (build my own backlit DMG with biversion and Prosound mod ect.). I love LSDJ but I also love the old Gameboy game times. The problem is: With the current 64MB usb cartridges it is much easier these days to flash roms on a cartridge (I still know the hard times when I had to get (or keep an old) computer with serial port just for flashing my cartridge for my DMG. Since then the only thing I ever wanted was a flashcard where I could store ALL of my old beloved gameboy games and LSDJ as well. I can do this with the usb 64MB cards but because of the fact that it only holds one save slot, I can´t start a game without deleting my LSDJ songs. Even when I don´t care about my LSDJ saves I can only play one game at a time until I finished it before starting another game which creates another save slot, deleting the old one (Not the case with Super Mario Land, Tetris and Dr, Mario of course but with Mario Land 2, Wario Land, Kirby ec. it is. Also an SD slot where you just could drag N drop the rome would be awesome (without the need to flash the card) despite the fact, that you have plenty of space on a sd card.

So my final question after waiting for years (without the talent, capabilities and knowledge to build my own . Why did nobody ever build such a thing? And if it is because of production costs: There is Kickstarter now and at least nowadays I would expect such a  project to come up on Kickstarter. There was a project over at 8bitcollective a few years ago but I never heard anything about it again.

I really have no programming skills but hopefully somebody with some knowledge could clear it up for me, why such a card does not exist.
Or am I the only one wanting this? Please write to this post, if you are somebody that would also buy one of these.

Thanks a lot for the help and info in advance
Bonewire