You lose too quickly.
The game moves too fast, that's the number one problem.
Second, obstacles appear faster than what you can think of how to avoid them, plus they change unexpectedly (like the pyramid losing its middle... it happens too late for me to anticipate a move afterward).
Eh, and the point of the game is to get a high score - which, unfortunately, you can't even submit. So the whole point of the game is lost.