Unlock Christmas With AvisEight Arms
‘Christmas-themed campaign website designed and built by Eight Arms for Avis Car Hire. This site enables exclusive competitions by solving the interactive riddles within the site.’
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 17 December 2015.