Here are some enemies that got cut. It was tough to make them feel alien while maintaining a consistent style.
I thought it might be fun to make a comic book-style loading screen, but we decided it didn't quite fit.
The rocket went through a few iterations.
Once upon a time, we had a complex series of tutorial images. This was a bad idea.
Here you can also see the gravity mechanic, which we scrapped once we realized that the game was much more fun the higher up you got.
We actually came up with the moon idea pretty late. For a long time, it was just nonspecific colorful cuteness.
I created a series of different patterns and colors that would appear at different altitudes as the player went up. We ended up taking a simpler approach to the same idea.
Early on, we had an idea for a power-up called the velcro jacket, which would let you stick to walls without sliding down. Unfortunately, it didn't really make sense any more once we decided on the space theme.