I don't want to spoil this one for others (although I think another reviewer already did) so I won't describe things in too much detail. Overall I liked it, and the production values (so to speak) were surprisingly high.
As a joke game I think its length ultimately works against it; especially certain segments are extremely tedious and unforgiving. It's a delicate balance, because if it was too short the joke wouldn't work either.
And... that brings me to another point. I really see this as more a parody or a joke game than a bad game. It's bad in the sense that it's not the serious game that was promised, but in a way that's more humorous than obnoxious.