Seriously......?
I have played a long list of bad games on this site, but for this to get front page. I mean this game has almost nothing going for it. Here are some bad things.
OK first of all you die way to easily.(One shot)
Not enough upgrades.(One upgrade in the first level... that's just sad.)
No bomb refills. ( It should be obvious that you need to have refills on everything.)
Over enemy spawning. (I died on level one 4 times at the first chopper because of crazy enemy that spawned out of nowhere. and starting out being surrounded is just stupid. i seriously got up from my comp as i hit play to answer the phone and came back to me dead, and only after i started it up again was i able to figure out why.)
If i wanted to play a crazy hard survival game that tested every last bit of my gaming power i would, but Metal Slug is supposed to be an easy game. If you wanted you could always have added a difficulty feature. For crying out loud you don't even have a good main menu. All your main menu consists of is and i quote " Play....How To Play.....More Games." Now sit back and ask yourself is that enough. All in all this game had great graphics for what your going at and ok music mediocre at best. But you really need to consider the fact that this failed as a enjoyable flash game. For what it's worth this could have been great but you failed to meet what the common flash gamer wants. A fun game that doesn't leave the majority of it's users mad and angry.
One last thing, I've played almost every copy cat metal slug flash game there is and by far this is the worst next to a few that are written in Japanese or some other language.