This is an old game from 2004, which uses only 97,280 bytes of disk space. However, it is 3D, complete and fully playable. The game use procedural generating techniques to create the most of the game content on the fly, so although the game executable itself is small, it can use a lot of your computer memory when it runs.

Download the game:
https://drive.google.com/file/d/0B5V2PrQ8xX_ETjlqXzYzZVE5bXM/edit?usp=sharing
Links:
http://web.archive.org/web/20110717024227/http://www.theprodukkt.com/kkrieger
http://en.wikipedia.org/wiki/.kkrieger
http://www.pouet.net/prod.php?which=12036

Repost/Via: http://miscool.blogspot.com/2014/04/kkrieger-3d-fps-game-in-just-96-kb.html

I'm trying to port ID's Wolfenstein 3D to Flash, palette not working now.
Pics:
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Some news for the game
Wolfenstein 5K Flash
A updated version of the game will come!
Many things are changing.
It have more colors, mouse control, slower/more playable speed, minimap...
I'm also trying to apply a in-game editor (for level maps and sprites&textures both),
so you can play levels made by yourself.
Be sure to come back later and see the improvements.