Now here is something really special for all our old-school first-person shooter fans. The 1995 prototype build/tech demo for 3D Realms’ Prey has just been leaked online. As such, PC gamers can download and run it on their PC systems.
For those unaware, 3D Realms was working on Prey back in 1995. Prey would be taking full advantage of the portal technology, way before Quake 3 Arena attempted such a thing. And while the team could not create a full game, it did develop a prototype build/tech demo.
You can download this prototype from here. Below you can also find some more information about this leak.
“This is an early prototype of the game Prey by 3D Realms, from November of 1995.
You can either pass a map name as the argument when launching it, i.e. ‘prey demo4’, or once launched via ‘prey’, press TAB to open the console and then type ‘load demo4’.
You’ll also notice several demos are available (DMO files) which can be played by using the ‘play ‘ command.
You can use W to change the display mode – it defaults to wireframe mode. L will enable auto-leveling. X will strafe left and C will strafe right. A and Z will go up or down. And as mentioned, TAB will open the console.”
Have fun!

John is the founder and Editor in Chief at DSOGaming. He is a PC gaming fan and highly supports the modding and indie communities. Before creating DSOGaming, John worked on numerous gaming websites. While he is a die-hard PC gamer, his gaming roots can be found on consoles. John loved – and still does – the 16-bit consoles, and considers SNES to be one of the best consoles. Still, the PC platform won him over consoles. That was mainly due to 3DFX and its iconic dedicated 3D accelerator graphics card, Voodoo 2. John has also written a higher degree thesis on the “The Evolution of PC graphics cards.”
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there are less people in the world who care about this than there are sentences in this article
Gigabrain moment
And even less people who cares about your comment. Much to think about.
The Internet is a big place.
Speak for yourself. It’s a cancelled game that was doing innovative things with game design ahead of its time (i.e. portals), worked on by one of the most influential developers of early FPS games (3D Realms). It’s potentially a super interesting piece of game history.
As useful as a rotten chair.
I think I’d give a toss if it was Prey 2, the cancelled 2012 cyberpunk bounty hunter open world game form Human Head Studios.
I think the 2006 version was pretty damn good to be honest.
It still is the most impresive IDTech4 game to this day.
It’s not like Duke Nukem Forever where the final build is somehow worse than a 2001 pre-alpha.
Wow i can’t believe it’s been so long since it released
Prey 2006 is one of the worst games I’ve ever played. I genuinely cannot fathom what its fans are jerking off to.
Disagree.
It’s a gem! Not too long ago I installed it again, and tweaked it to use Sikkmod + 4K + EAX + RTGI…great experience!
Duke Nukem 4Ever – A prototype build for a scrapped sidescrolling 2D version of Duke Nukem Forever has been recovered!
https://www.indieretronews.com/2022/12/duke-nukem-4ever-prototype-build-for.html
Its a 1mb file, this is hardly a demo. When I saw this, I thought for a sec it was the old prety2 game – https://itproz.blogspot.com/2013/09/download-prey-2-pc-game-free.html
I had no idea they started working on Prey back in 1995 and it took until 2006 to release it.