My attempt at making a tile based game where the game was also the editor. Clearly I didn't know what I was doing, but like many things I've done, it was a good learning experience. I made a few screens from Link's Awakening with it. I was drawing each tile in MS Paint by staring intently at my Game Boy, so that was a mix of both tedious and fun.
The editor interface and first screen of Link's Awakening.
Second screen of Link's Awakening.
I created a splash screen for the About window with the alternate name of MyCraft. Clearly this is a totally original image. Not ripped off of any retail game or anything.