Looks like a really good concept for a puzzle platformer. Some things I'd work on:
- Retracting the gum back takes a bit too much time.
- Jumping feels like a bit too precise, or maybe it was intentional?
The things I liked:
- The graphics were simple and pretty to look at
- The music fit the tone very well
Overall, great job! I didn't get past Stage 2 tho >.<