Art Style and Graphics

CEDEC talk for Smash Ultimate:

https://www.siliconera.com/super-smash-bros-ultimate-cedec-talk-reveals-unused-battlefields-original-game-size-and-more/

https://www.famitsu.com/news/201909/09182856.html

Smashified renders and timelapses:

https://smashifiedart.com/#character-list