I’ve recently started branching beyond Virtual Boy and I designed a connector for the EXT port of Wonderswan. Wonderswan is the GameBoy competitor built by Gunpei Yokoi, the creator of the GameBoy and Virtual Boy. Turns out the EXT connector is oddly similar to the VB (who can guess why?) so it wasn’t much of an effort to adapt my VB link cable design. Once I had a connector, I was able to make a new 2 player cable, as well as a USB cable. Fun stuff!