depths help

For Ludum Dare 57. Theme: Depths.

This is a simple layer-sorting game, where you can adjust layer's depth to get different information to go to different story branches.

Lacking time, I couldn't even polish anything. So, in case it is too difficult( I'm the feeling so), here's the two answers of the order:

normal:

1. logo.png
2. cat.png
3. ufo behind cat.png
4. ufo far.png
5. trees.png
6. factory.png
7. mountain.png
8. bridge.png
9. river.png
10. far tower.png
11. clouds.png
12. bank grass.png
13. blue sky.png

advanced:

1. logo.png
2. ufo behind cat.png
3. cat.png
4. factory.png
5. trees.png
6. clouds.png
7. bridge.png
8. bank grass.png
9. far tower.png
10. mountain.png
11. river.png
12. blue sky.png
13. ufo far.png

Of cource, you can explore and challenge it all by yourself. Hoping you love the idea of this game.