Their Kickstarter failed to reach even 50% of its required funding
A lot of us have fond memories of Mutant League Football as kids, but that nostalgia wasn't enough to raise the recent Kickstarter project above the rather ambitious goal of $750,000. In an update given after the campaign was over, the developers noted that they "weren't going to give up," and will "keep fighting to get this game to market."
The next order of business is to give out prizes that were promised during the campaign, then they'll gather some surveys and revise a new plan for the game -- from there, they'll figure out where to take the franchise. If they can't get funding, my guess is they'll go solely for iOS with controller support.