Nice minimalist artistic design. Could have done with more indication of movement by having a background with more variety.
For a chill out game I found that I would have liked to have been able to see more of the world so that when moving fast I didn't have to have quick reaction times to collect the squares going past.
Music fits the theme well.
Misc Notes: I didn't quite understand the scoring system, maybe could have made that more clear. Never seemed to find any enemies, not sure why. If you went too far away, the background grid would disappear and the squares would stop spawning.