We just found out that many crafts weren't showing on the webpage because they were flagged as beta crafts. We think this situation may have been unfair to many players, hiding their entries preventing them from getting upvotes. For this reason, we have decided to push the deadline by a week.
This post has been edited, so some people may miss it, we'd appreciate it if you could share it with your friends telling them about the change in the deadline. Remember to also check the entries to the challenge to see if you missed something you'd want to upvote.
You may still have enough time to sneak an entry in and win, especially in the Experimental category that has now a very low 1st position with just 12 upvotes.
If you want some ideas to try to implement you could make an interactive mini-game (now that we have buttons and levers you could make a Pac-Man or Pinball), a walking robot, a jetpack, a car driven with two levers instead of a wheel, wings that you have to flap manually for the thing to fly, interactive guns... Possibilities are endless!