Overall it was kind of difficult to worry about the tetris side of things and the platformer side of things at the same time, but this is coming from someone who isn't that into platformers. I might also be using the wrong strategy as often I was worried more about clearing the tetris blocks as best I could rather than trying to advance through the level. I found it difficult to get any further than 50m in any of my runs. I'm not sure if you need to have the precision skill to be able to jump onto the moving tetris bricks, but that was often my only way to escape the green wall of death was to take a risky jump onto a moving block, which I would often mess up and fall to my death. It's definitely a cool concept though and it was entertaining to play.
A quick note on artwork, I think the colors could use some tuning. Specifically, the character color options aren't that appealing to me overall.