For reference: Tower [1] and desktop [2] cases.
[1] https://hozi.net/it/computer-historie/vobis-highscreen-colan... [2] https://de.wikipedia.org/wiki/Datei:Colani-pc.jpg
IIRC, he presented a prototype that was much more radical, and a lot got lost in mass production. In the end it was a standard case with a few rounded edges.