Axiom

Minecraft player Salaja designed a computer, in a computer, within the world of minecraft, "capable of loading 16 lines of code into its RAM, and then performing operations before displaying the results on a screen in hexadecimal notation." Never plyaed minecraft myself but this is pretty interesting, and the enormity of the whole contraption makes me think of Charles Babbage who (with the help of the first software programmer Ada Lovelace, she wrote the code on punch cards), in the middle of the 19th century. Was reputed for having conceptualized the basic outline for a programmable computer, using materials for the age, it would have been been equal in size as the city he lived in, and it had all the concepts of the CPU, RAM, and software in it. Concepts that were not rediscovered until 80 some years later.