I love the idea behind the game. The wacky physics are fun and so is building something that just barely works! There's a lot of potential for the idea at play. I would hope the items attached to what seem to be motor blocks could have visible keys. It's fun to scramble for which keys could save a close call, that fun scramble would still be there with the keys visible and save the frustration of using keys that aren't in play. The unknown keys in play thing is a kind of frustration that gets old pretty quick after multiple redesigns and finding the keys have changed for whatever unknown reason. Overall loved the experience!