A promising beginning. The art is lovely. The ground layer--in most games a very ordinary affair--is quite spectacular. The player character sprite and animation are quite good, also.
Unfortunately there were many issues. The background, while intriguing (what are those ziggurats?), was out of focus in a way that somehow jarred me a bit.
When jumping between platforms, I occasionally got stuck in between the colliders and could not extricate myself.
After the game over, the cursor becomes invisible, so it's next to impossible to click the buttons; the only way to continue the game is to reload the page completely.