Fans of 3D Realms’ foul-mouthed, alien-bashing antihero Duke Nukem can now check out a side-scrolling version of the ill-fatedDuke Nukem Forever,as leakers post a 1996 prototype build of the game online. News of theDuke Nukem Foreverbuild being leaked online comes just days after a prototype of 3D Realms’ portal-powered shooterPreyfrom 1995was similarly leaked.

First announced in 1997,Duke Nukem Foreverhas become infamous for both its protracted development cycle as well as the critical and commercial roasting it received upon release. A follow-up to 1996’s hit first-person shooterDuke Nukem 3D, which was praised by critics and fans for its skewering of pop culture and remarkably interactive game world for the era,Duke Nukem Foreverwent through numerous revisions over the course of more than a decade before eventually being handed over to Gearbox Software and released in 2011. After an early build of the game was leaked online earlier this year,Duke Nukemco-creator Scott Miller took to Twitter to discusswhat went wrong withDuke Nukem Forever’s troubled development.

Duke Nukem Forever Cover Art Looking Down

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In surprise news for fans still holding a candle for Duke despite his disastrous last outing, a user named x0r_jmp has leaked a 1996 build ofDuke Nukem Foreverto Archive.org that sees Duke returning to the side-scrolling gameplay ofDuke NukemandDuke Nukem II. The leaked build contains the original game files and a level editor for the prototype, as well as patched versions designed to work on modern hardware. This isn’t the first time that x0r_jmp has provided a major leak related to theDuke Nukemfranchise, either, as they also posted the leak earlier this year that served as the foundation for theDuke Nukem Forever 2001fan restorationproject.

Despite featuring an extremely limited amount of content, the side-scrollingDuke Nukem Foreverprototype contains many of the classic elements associated with the franchise. Players can use a variety of different weapons, and trademark gadgets like Duke’s jetpack, as they fight their way through the limited selection of levels. Although returning to a side-scrolling format after the success ofDuke Nukem 3Dmay have been an unusual choice for 3D Realms, the impressive graphics and physics for the time show that the developer was still dedicated to producing a game that would be a technical showcase, regardless of perspective.

For gamers still stinging from the lackluster release ofDuke Nukem Forever, this leak may serve as just another example of everything that went wrong with the storied game’s troubled development. While Duke’s most dedicated fans may never get their hands on the version ofDuke Nukem Foreverthat they’d been looking forward to for so many years, at least they still have a possibleDuke Nukemmovieto look forward to at some point.

Duke Nukem Foreveris available on PC, PS3, and Xbox 360.