In response to your question, I've added a zip version which can be used if people don't want to use the installer.
I made this using MonoGame (with C# as the language).
Forgive me if the answer to this is obvious (I've never been involved in a Gameboy jam before). I understand we have to stick to the original colours and the original resolution. However, given the width/height ratio of the Gameboy screen is different to a computer screen (16:14.4 rather than 16:9 or 4:3) this suggests that the game won't take up the full screen (unless stretched one way more than the other). Do we have to design the games not to run in full screen or can we make them run on full screen but with the game itself running inside a "game window" which is the correct resolution and uses the correct colours, with a border around it filling in the rest of the space which wouldn't be part of the actual game (and could therefore potentially use different colours to distinguish it)?