Personally, I wasn't expecting cutting edge realism like today's games.
I went into this, knowing that it is meant to be a "tongue in cheek" fun game much like Duke Nukem 3D was.
I don't think it is meant to be designed as a serious FPS. This is a game that thumbs it's nose at today's expectations and standards in a good FPS.
If you are looking for some serious hardcore, "edge of your seat" action with a fully destructible environment, then this is not the game for you.
If you wish to go back to those early years of gaming where it was just a whole lot of fun blowing the crap out of aliens with "over the top" weapons and corny one liners that have you giggling at the toilet humour, then you will love this game. I mean, how many games can you name where drinking beer gives you "super human" speed and strength? How many games allow you to take a leak in the urinals, and pick up your own faeces and toss it against the wall? Over the top , and potentially offensive? Yes. Welcome to the world of Duke Nukem.
This is what makes it so different to what is out there. It is so over the top with "dad jokes", toilet humour, and sexist remarks, how can you take it seriously. This is what made us fall in love with the old Duke Nukem game.
Yes the single player demo is short. But it gives you a great insight into the various weapons and gadgets available to you. The single player is pretty much like the original, in the way that you follow a set path with the occasional roadblock for you to work around. There are a crap load of different aliens being thrown in your path, and you need to kill them all to save the world. The fun in killing the aliens depends entirely on how creative you want to get. How do you want to kill the next alien? Shall I shrink him and squash him like a bug? Shall I wound him with the pistol and finish him off with a kill manoeuvre that will remove his head? Shall I just blow him away with a rocket?
The story may be pretty straight forward, and the maps may be linear. But the game's attitude and abrasiveness with toilet humour, is what sets it apart from your standard FPS game. It is the Duke of old, and that is the way it should be in my opinion. It brings back the "fun factor" in FPS.
Throw in the multiplayer aspect, with the potential to frag your mates in so many humiliating ways, and you have a potential hit amongst your friends. If the multiplayer is anything like DN3D, then this is going to be a whole bag of laughs. So much variety and corniness, how can you not laugh while squashing your mates like a bug after you have shrunk them, or freezing them, and making them shatter into a thousand pieces?
You don't need cutting edge graphics or complicated controls to achieve that sort of fun. I think some people's expectations may be too high for this game, and will therefore be put off.
Without playing the full version with multiplayer mode, I am keeping an open mind. I think this game was designed for maximum fragging, and a barrel of laughs. It is a simple formula I know. It worked back then, so why wouldn't it work now? I am glad they stuck with the same feel and vibe from the last version of Duke Nukem all those years ago.
Duke Nukem Forever *Demo*
He has some taste after all 
