User blog comment:Dinner111/Possibly Hardest Track/@comment-5199397-20120808024108

My difficulty on BTD5, from easiest to hardest

1. Monkey lane

2. The rink

3. Park path

4. Dockside

5. Snake river

6. Crop Circles

7. Lightning Scar

8. Mount Magma

9. Switch

10. Clock

11. Castle

12. Death Valley

13. Main Street

14. Bloontonium lab