Very interesting for your first game. I did have fun with it and I like how you how you had the levels set up. There were a few times when i try to run off the platform to do a double jump it would only give me one jump at a time so had bit of trouble that. Just i think at times falling off only let you do one jump when at times i felt i could run off and two jumps. Just a simple thing. Maybe if you want to continue this game, try adding in some moving platforms. Great job on the first game.