Well, I just googled “Gamby.h” and it turns out that Gamby is its own Arduino based little game toy device. It has four buttons and a d-pad, compared to Arduboy’s two, and its screen width is 32 pixels fewer than the Arduboy.
While you did make an effort to find an Arduino game to use on your Arduboy, not all Arduino software is compatible with all Arduino hardware.
I think you drop the folders into the c:/Users/XXXX/Documents/Arduino/ directory. If I recall correctly, you should then be able to access them by going to File > Sketchbook in the Arduino IDE. I usually just put them on my desktop, though.
I will! I received my Arduboy yesterday and it’s currently 05:46 am and I’m trying to figure everything out and learning programming only because of this device, it’s so fun!