boo

It functions, but it is incredibly monotonous.

Other than the cat sprite, the visuals are bland and without detail.
The background is blank. The mountain is blank.
The spike sort of has shading, but there's only ever one at a time, and it's the same color as the mountain.

Despite clearly being designed with mobile in mind, the game almost crashed my tablet just.
from hitting play.
It also displays very strangely, being quite tiny on the screen.

There is no actual challenge to the gameplay, unless you count struggling to focus due to the stages taking ages and the spikes moving at the slowest possible pace.

You could probably take out all of the odd levels starting with 1 out of the 500 stages, and end up with 250 stages with a better difficulty curve, but there would still be the issue of monotony.
There is only one very plain background and one very basic obstacle, and that just isn't enough content for a game that is this long.

It's a good start for 2 hours of work, but it is still very much unfinished..