WOW what an amazing game. After I figured the orange smelting points out this was just fantastic. First of all the sound design is cool and the graphics really fit in this game. But the mechanic with these keys is just such an awesome interpretation of the theme. And how do you got this level design made in just 48 hours? I really needed to think like 10 steps into the future to solve them and this was very challenging but very, very fun. I also think you saved my life by inclduing a one-step-back tool because otherwise it would have been very problematic at some points XD
So all in all a definitely very succeeded game! 15/15 Stars!