ctfd (https://2021.uiuc.tf),
July 30 - August 1, 2021
UIUCTF 2021 was also a great success! UIUCTF 2021 was organized by a team of 30 led by Thomas.
The theme did not have a name, but the vibe was Futuristic Art Deco / Roaring 20s. You can see the landing page at this link!
View the frozen CTFd at 2021.uiuc.tf