This was very fun! I feel like the gameplay integrated the theme well by having to continuously go up steps while avoiding hitting the bottom of the screen or falling off. I really like the idea of controlling some of the environment and then interacting with it as a concept in general. And the coins add a strategy aspect to putting down stuff to jump on. Cute character too. It would be cool to see some audio added, or maybe fixing the bugs for the platform-placing you mentioned since I had the same problem as the other commenter. Great job.