Board Thread:Suggestions Forum/@comment-4750818-20141128230030/@comment-27723099-20141130043429

Redstone is EVERYTHING!

Once you leave your tiny survival gameplay, all you need is redstone and command blocks.

Basically, redstone is like electricity in Minecraft but with electricity you can build everything, up to working computers or controllable, giant battle robots: http://www.youtube.com/watch?v=zmLxH3VZRoA&feature=youtu.be (This one blew my mind. It's completely without command blocks)