Good start at game making, add a little twist to it, some scoring perhaps, some distractions (visual/sound), make a point to the avoiding (perhaps run to a certain exit or something).

no ofense but i think it's average

The concept of dodging falling blocks in a Tetris-like area is interesting, but there needs to be a clear objective beyond surviving as long as one can. Adding a timer counting up and a block count to determing survival time and blocks avoided can provide the player determinate personal bests he or she can try to beat. Even better would be multiple levels with objectives such as, "Survive for two minutes", "Avoid 250 blocks", or "Climb your way out", where an exit is located on one side a dozen blocks above the initial level of blocks.

Ok, so:
I understand the music was only a simple thing in this, but i must say the tones are irritating.
Another issue is due to the movement speed it is relatively easy to simply not die, and when i do i cannot track my progress as there is no highscore/time survived or whatever.

A nice simple game, just needs some touch ups.

Not very good.
The game is very basic to look at, the controls are super floaty, and it isn't clear if a falling rock will hit you or not. The music is very annoying - in a game where you'll be playing the same thing over and over you really want to get some top quality melody and some less irritating instruments.
Also, the fact that it boots you to the title screen after dying is kinda sucky, especially considering you need the mouse to start but the keyboard to play.
Having no scores in a game like this is a real let-down - there's no end goal so without a score there's no reason to keep playing.

Need to improve:
Make hitboxes clearer
Choose better music
Space bar to start on title screan
Score system.

Could improve:
Make controls less floaty
Add game over screen
Improve graphics