Incidentally, I didn't realize that he was the creator of Infiniminer. For those unfamiliar with the game, it is what inspired Notch to create Minecraft.
Oh man, Codex of Alchemical Engineering is a game that brings back very fond memories. In fact, he also made KOHCTPYKTOP: Engineer of the People http://www.zachtronics.com/play-kohctpyktop/ another game that I used to love.
Incidentally, I didn't realize that he was the creator of Infiniminer. For those unfamiliar with the game, it is what inspired Notch to create Minecraft.