Wow! I thought that this was so cool all around. The theme/design was very unique. I really really loved the text giving small story beats, and I think it created a very abstract and emotional theme, which is impressive for a game with a colored circle that is sliding around! (I relate to this a lot, my first game jam entry was very similar :))
The movement felt great, and the animations were very snappy. I think the difficulty ramped up a bit quickly by the final level, but I felt very comfortable with how everything worked because it was shown off very nicely in the previous levels.
What this was really missing for me to take it to the next level was music and sound. If there was a somewhat emotional/introspective song in the back, I really think that would have made the emotional tone hit home. The mechanics introduced worked very well and could lead to a TON of interesting levels. Speaking of, I thought the level design was fantastic! I have always found puzzle level design complex and difficult to understand, so this is VERY impressive to me.
Another 10 points in my book for having your GDD LINKED IN YOUR GAME?? Ingenious. Overall, I thought this was an absolute treat, and was only a step or two away from being a perfect 10 in my book, which is MASSIVE for a two week prototype. I am really looking forward to what you accomplish in the future! Keep it up my friend :)