Yeah me too it's remind me polyMar's although it's an amazing game really fun to play :D

The graphics remind me of polyMars' games, simple, yet effective, could use some more obstacles I think but it's pretty fun to play! (PB:144)

The graphics are charming and gameplay is simple, but I think it lacks any challenge. The player's only job is to press spacebar and keep the player near the middle of the screen. The occasional switch to space only made it easier. 

One suggestion would be to have some hazards mixed in the coloured balls so that the player needs to dodge them too. Another possible addition is to have a few more environments other than just space to add more variation. For example, a Mars environment might increase gravity, a windy environment might blow the player towards one direction, etc. I would also personally prefer the functional gravity balls to look different to the usual score balls to make them easier to be distinguished.

On the bright side, the game isn't bad either. It may be simple, but it's still a stable and bug-free game. Great job on it!