Duke Nukem Critical Mass Nintendo DS

After Time To Kill and Zero Hour, here's another Duke Nukem game featuring time travel: the Earth Defense Forces are monitoring the future using a time machine, but not all the men sent there have returned and have lost contact. So they send Duke Nukem to the rescue. There, Duke discovers that aliens have invaded Earth (*again*) and are experimenting on Earth women. This obviously involves another round of alien butt-kicking.

Similar to Manhattan Project, the game is essentially a 2D side-scrolling platformer/shooter, but the environment is modeled with 3D graphics, allowing for things like panning and changing the path axis. To spice up the gameplay, first- and third-person shooter sequences are included.