you make a remix. it will have your world (choose theme from notes and credits). 10 levels. make it have slides. then, remix again, and add the character design and any special abilities. then, you are done. any world may have spikes and you can make problems uneque to your world. there can be more than one entry for a world.
1. hills 2. mountains 3. cave(1 entry.) 4. toxic (1 entry.) 5. desert(1entry.) 6. plains(1 entry.) 7. sky(1 entry.) 8. temple(1 entry.) 9. sea 10. homelands