I managed to play this to about level 5 or 6. I gave up because the movement mechanic seemed a tad too frustrating to me. The biggest issue is that it seems when you are really close to walls that the particle stream collision detection is a little flaky and it doesn't propel you like you might want. This led to a lot of frustrating aspects especially during the long vertical tunnel levels utilizing wall jumps.
The music and graphic style was enjoyable enough. I feel like the particle blocks could likely be redone in a way that would be more visually interesting. I don't like how they overlap or how they look with the transparency.
I think this game could be a lot more fun with a bit more tuning of the collision / particle propulsion mechanic.
EDIT: One other thought is that I would like to know how many blocks I've collected out of the remaining number so I can better plan my movement timing. It was frustrating to think I had reached the last block right before time running out only to realize that there were more left.
Further thought. I just read that you made this in 100 minutes so I guess I understand more about why it is a little unpolished so far!
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