The rules:
1. Your entry should at least have
500 particles
2. Your entry must be original
4. Your entry shouldn't have moving things (:? ???)
5. You should not scratch on the art (if you do it's your fault)
6. You shouldn't copy others' work
7. Entry shouldn't require some special view mode
8. You may use electronics and deco
9. You may use others' work as idea (but not stealing it)