This game is AMAZING.
I originally purchased it on Xbox 360 back in 2010 after I fell in love playing the trial version. (This was back when people actually played the game, and the servers weren't totally dead.) I think that was when the MOBA craze was just taking off, but this did something original with the formula that I hadn't seen anywhere before... It's a class-based shooter like TF2 but the game plays like League of Legends -- you protect your home base's "crystal" from the opposing team's minions (all different kinds of robots, in this case). What makes this formula even more interesting is that your "towers" (turrets) are selected and upgraded by YOU and your team using the "gold" you get from killing the enemy team and their minions. And to top this all off, it has a crazy, silly, cartoony atmosphere and art style, and it acts like it's a reality game show/sport (hence the title), complete with a witty announcer.
I picked up a 4-pack for super cheap a few months ago to share with friends, but... Sadly, since no one really plays it anymore, all you're really left with is the 1-4 player "tower defense" co-op mode -- you choose your turrets to defend against waves of the different kinds of robots and defend your crystal.
Eventually, they released a sequel in 2012 (Super MNC), but it was a free-to-play, microtransaction mess only available on PC. It was awkward and boring with none of the charm of the original (read: hat simulator), and I don't think anyone plays that anymore either.
Really, MNC is the predecessor to the likes of Smite, Minimum, and the next Orcs Must Die... If you can pick this game up for a buck or two, maybe you could get some friends together to play it, even if it's just the co-op mode. Sure, you didn't get to play it in its heyday, but you still get to play something different.