At its 2011 upfront, Cartoon Network announced 12 new series, including The Problem Solverz (originally planned for Adult Swim but switched to CN for being "too cute"), The Amazing World of Gumball, The Looney Tunes Show, Secret Mountain Fort Awesome, Level Up (a scripted live-action comedy series with a 90-minute precursor film), Tower Prep, Green Lantern, DreamWorks Dragons (a series based on the DreamWorks film How to Train Your Dragon), Total Drama: Revenge of the Island, the 4th season of Total Drama, ThunderCats, Ninjago: Masters of Spinjitzu, and Ben 10: Omniverse. The network announced it planned to debut a new programming block called DC Nation which would focus on the DC superheroes, the first being the series Green Lantern.
