This is a good game, although the key should have opened the lock at the bottom right of the screen instead of enabling the red laser around the middle of the screen. It felt like I didn't know what to do next so I just retried to grab the key, but the red laser kept spawning. Also, how the theme was implemented into the game was very thoughtful. The different ball sizes makes the player be able to go through the tightest of gaps to the next area of the level. This is a nice submission though, good work!