Its a nice and simple game that could easily become addicting. I tested it out with some friends and we found that once you hit around 322 that you move so fast that the objects don't spawn in in time anymore. Furthermore, the start speed might be a little slow. We t herefore recommend to speed up the starting speed a little, slow down the rate at which you speed up and put the max speed slightly lower.
We also found the environment a bit boring, maybe you could add something to make the environment a bit more interesting, like lights flying by or something or a space feeling.
The block also sometimes feel a bit off, they are ofcourse randomly generated, but when you have a wall directly followed by a bar...it feels a bit useless. They could also look a bit more interesting, like the walls in beatsaber for example.
I also think the game would be well suited as a mobile game where you could control it with either gyro or your thumb.
One issue might be though that when you slow down the speed it would not become challenging enough. Maybe you could create something like ramps, or gaps in the map you need to jump over? Anyway, its a good start of a really fun game! :)