Bullet Storm was made by the same creators of Gears Of War 1, 2. 3 is coming out, maybe in April? Not sure really. But the game is about Space Pirates, I think they're space pirates. >3> But they find out that they were being lied to, about the people they've been sent to kill. They thought they were killing bad people, when they were really killing not bad people. So they go to seek revenge.
Borderlands, well, the campaign you can pick whatever character and it's about trying to find the vault. But you also do missions for people. Like on one of the addons I need to do this challenge, for a zombie, who wants me to go get him brains, which I have to kill zombies by shooting them in the head to get their brains when they die. And when I finish and go back to him, I watch him eat a brain and then cough up a weapon for mehh. Then I'll have to get mooooore brains.
I think he'll cough up another weapon. >>