This week Xbox 360 owners could play something that their PC brethern have been playing for 12 years. Duke Nukem 3D was released in an Xbox Live Arcade downloadable version but with a couple of extra features. One of those extra features turned out to be new screenshots from 3D Realms' long, long, long-in-development follow up to the game, Duke Nukem Forever.

Shacknews has a ShakyCam movie (via a cell phone camera) showing how the shows are displayed in the Duke Nukem 3D Xbox Live Arcade's art gallery. The two new Duke Nukem Forever screenshots are visble in the gallery only when all of the game's achievements have been made. There's no word if 3D Realms plans to release proper high-res versions of the screenshots. We are now approaching a year since 3D Realms released a new teaser trailer for the game that has been in development for over 10 years.

Update: Duke4.net has some much better shots of the two new Duke Nukem Forever screeenshots (one of which we have reproduced above)