I have tried running a 0 blitz and somehow the offensive line always finds a way to block everyone and then I get burned for an 80 yard TD. I can consistently stop the run but the passing game is impossible. No matter how you scheme the opposing QB regardless of overall rating will run like Mike Vick and throw like Tom Brady while the RBs and WRs turn into randy moss. By unplayable, I mean the game is simply not fun.