Excellent game, but I think it could have done without the Artillery mode. It just seems out of place in a game that uses futuristic energy-based weaponry. That, and I find it to be a royal pain in the ass.
It's good, but I feel that this is shorter than the first one, not to mention that you can't replay levels, the items from the bosses are (mostly) useless, and you can't enter the cellar (although that might be a reference to the first game, but what the hell). Otherwise, it's ok.
For those of you who are angry about the title:
IT'S A JOKE. HE'S NOT UNPATRIOTIC. The game is called "American Swine" because it's about SWINE flu in AMERICA. Get over it, go on another site, or NOT PLAY THIS GAME. Jeez......
Quick explanation:
-the game probably takes place far away from Earth.
-Black Holes form from extremely huge stars.
-it's not a star it's some gas...queen...thing.