Which game to play after finishing Duke Nukem Forever?

Supreme Commander is nice

Bulletstorm was amazing, nice scenery, fast action, and kinda cool jokes about cliches from FPS genre.

Borderlands(You didn't mention it, but you got it in your library), amazing game even without friends playing with you. And you didn't finish Duke Nukem :<

When I beat it, I was so ashamed that humanity had gone so low that I did nothing but play Russian Roulette for a week. I'm amazed that I survived.

Civ V of course.

Sid Meier's Civilization V :)

Bulletstorm + Civ V

Civ V

Bulletstorm. It's a great game, really fun to play, but pretty short so download Civ V in the meantime.

Uh...none. After playing Duke Nukem Forever you should now just go hang yourself to relieve yourself of the horrors this wolrd brings...like Duke Nukem Forever.

Fortix.

Of those you list, Alice, then Serious Sam 3.