For those of you who don't know, Ludum Dare is a 48-hour game making competition. Notch, creator of minecraft, is a regular participant for the (I believe) annual event. The link below is his finished game made in 48 hours, and immediately you should notice some major similarities to Minecraft, which is no surprise given the name. I believe Minecraft players are given a considerable advantage in this game, as we already know the basic layout and idea of the game. We know what to do for the most part.
HOWEVER the game is very different from the original, and it's very...scaled down, given the short time it was created in. So give it a play! I've found it very addicting.
https://s3.amazonaws.com/ld48/ld22/index.html