Ellen and the Grammy-nominated singer played a super-sized version of "Heads Up!" You can get "Heads Up!" for your iPhone or Android in the App Store and Google Play Store!
"Heads Up!" via iTunes: http://ellen.tv/Heads-Up-iTunes
"Heads Up! Kids" via iTunes: http://ellen.tv/Heads-Up-Pictures-ITunes
"Heads Up!" via Google Play: http://ellen.tv/Heads-Up-Google-Play#DemiLovato#TheEllenShow#Ellen