That's what I figured. But I thought that introducing those mechanics earlier would have been nicer to keep the player engaged.
Anyway, don't let me design your game over you. Good job!
Not at all! I appreciate any feedback. Definitely had a tough time trying to strike a balance between:
1. The joy of the physics playground
2. The emotional experience of messages, and the meaning behind choice or the lack thereof
3. The mechanical puzzle aspects
Your comments definitely highlight the struggle, and it might have been better to try to cut one of those three aspects entirely, and just focus on two.