"What *isn't* the best gaming website?" Under the rules of the quiz you should therefore click the one that *is* the best gaming website. However the answer is Flashtuts.co.cc. I'm fairly sure you meant to say kongregate was so please sort out that question.
This is a good game, but the discrepancy between where the cursor is and where the gun is aiming is extremely distracting. I keep finding my eyes drawn to where the arrow should be instead of at the cross hairs, and I can't quickly target anything neat the top and bottom edges on the screen.
Wow, I read the title and thought "Someone's made a flash version of Left 4 Dead. This could be interesting!" No such luck. Instead I find a game thats strongly based on previous zombie games I've seen on kongregate (and no, it wasn't your earlier games I'm refering too, although they could be based on them.) and then mentions CoD in the intro in a desperate attempt to win votes. Theres nothing wrong with the game (except the severe lag and music that just would not shut up for me, but theres nothing particularly right about it either.
Ok, first a robot started demanding, and then mis-treating animals. Then an insane AI hacked secure facilities across the world, and now sushi eating robots have invaded. Am I the only one that thinks these robots are getting out of hand?
Gameplay issues: Far too easy to finish, I didn't even have half of the upgrades. I have no idea what the bonus effect was, and therefore didn't invest anything into it. After I reached mars, rather than giving me the cash for the flight and saying "now go as high as you can to make in into the highscores" I just got chucked back as if the flight never happened. Those are just the crippling ones, but there are a few other things suggested by other people that could also do with being fixed.
This is, however, considerably more advanced than your previous games and so you should still be happy with the outcome.