Raze on 09 January 2014
As someone who has a Wii U and this game, born into the arcade/Atari 2600 era of gaming, I must say, I don't see how online play would have enhanced the game much. It's a well done game with devious level design and good replay value. It really doesn't NEED to be online.
The Carnival of Shadows - Folk Punk from Asbury Park, New Jersey
http://www.thecarnivalofshadows.com
