keith, this is his only game, the others you saw are based on the same tutorial. But this is yet again a version which doesn't change anything at all except for the graphics, and it does a pretty lousy job at that. Please make your own game based on a tutorial, not just a copy.
also, J seems to be the super jump (big dino launches the small one), K is attack and L is "crouch" though i would call bending and running. Q can be used to switch too.
The dual machine gun is useless in later campaigns, it basically only works in the first 3, and you need to buy something (sniper or heavy cannon) to deal with the shield ships in 3.
Upon completion of wave 50, you simply have us start all over again? What's the point of keeping score if I'm not even going to see how much i scored at the end?
Why can't we sell or at least drop the basic weapons? They're cluttering up the inventory.. Also, the ingame help is fairly useless, doesn't explain half of the things. Some explanation about SP would be nice for example. Overall nice game though, 4/5