The paper advergame
I’m a big fan of print campaigns that get interactive above and beyond QR codes. The “paper” advergame is traditional innovative idea by DDB Helskinki to promote mobile operator Sonera, who has been the first to launch a 4G mobile network.
The video case study doesn’t explain super clearly how the trick work. I think it’s not an app but rather it’s based on a mobile web page. Can’t guarantee it will deliver the message about Sonera being the fastest network. But surely it creates a nice opportunity to interact with the brand.