Working Calculator in Super Mario Maker [video]

The actual impressive logic circuit used: http://i.imgur.com/rltt1y7.jpg

A link to another video of the same level. This one, however, adds 6 + 6 to get 12, which (in the final scene), shows how the digital numbers are created (timing flying bomb-ombs exploding near ice blocks).

OP's video shows 4 + 4 = 8, in which none of the ice blocks need to be removed, so kind of magical when you're seeing it the first time and wondering how those blocks got there.

https://www.youtube.com/watch?v=rCTGXUNg2fE&feature=youtu.be

This seems to be a mechanical calculator. I've always found mechanical calculators fascinating and delightfully intuitive, because of how physical they are --- you can actually see components move around and perform calculation. Although in this case, I would've liked to see more details on how the sum is generated.

Related: Super Mario Maker is Turing-Complete: https://www.youtube.com/watch?v=HcLE1MuyodA

Nice demo, but the dialogue on top of the video is fairly annoying: "I have no idea how he did it!", "This is insane!", "You can't see it here but my jaw just completely dropped.". Would have been better with a commentary from someone who had a clue what was going on.

As you watch the video, notice how Mario is moving along with the shells. This isn't just for show: the shells will disappear if they move too far offscreen, and the music-note blocks won't produce an item when hit unless they're actually visible. Building a circuit this complex under these constraints is a huge achievement.

It's pretty cool that it displays the sum as digital numbers.

I wish I could put one third the amount of dedication I just witnessed into my own work, sometimes.

Remember seeing something like this in Little Big Planet, like eight years ago. Cool to see it with Mario.