Dual portal is rumoured to be free to change its appearance...
List ID - 603725
▶Intro & Outro song
Thorne - Call On Me
https://youtu.be/GC9JBgYAxZc
▶Level inspired by the intro part
"Next Cab Soon" by Geogamer12 & more
~Used song~
Bad Piggies Theme
https://youtu.be/EgAOqt8I5ac
~How to send Mulpan Challenge?~
1. Write down my nickname in the challenge title.
2. Verify the Mulpan challenge.
(If it is Platformer challenge, it should be less than 30 seconds when you verify it. Normal challenge should be tiny~short length.)
3. Upload Challenge. (Don't check "Unlisted" option.)
4. Search for "Mulpan".
5. Send message with ID.
Tip 1: Don't make it too difficult. (I can skip)
Tip 2: Make it more interesting. (with 2.2 Update)
▼ How to send Mulpan Challenge video guide ▼
https://youtu.be/8nAOmpLlvkI?si=uaousHjvJQAKwQ3h