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Unknown Worlds is a self-funded, independent game company in San Francisco, CA. Our goal is simple: to unite the world through play.

We are currently working on Natural Selection 2 on our own custom engine. Past titles include Natural Selection and Zen of Sudoku. We have also worked on titles such as Previously, we worked on titles such as Titan Quest, Titan Quest: Immortal Thone, Empire Earth (two million copies sold) and Mindrover (PC Gamer 89%).

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Add engine Engines
Spark

Spark

Commercial licence

The Spark engine is designed to enable small teams to make immersive games. As a tiny team ourselves, having tools that let us iterate extremely quickly...

Add game Games
Natural Selection 2

Natural Selection 2

Real Time Shooter

Natural Selection 2 is the sequel to the popular Half-Life mod Natural Selection. It is built on our own engine and will be distributed through Valve's...

Subnautica

Subnautica

Adventure

Subnautica is an open world underwater exploration and construction game. We are Unknown Worlds, the developers of Natural Selection 2, and Subnautica...

Future Perfect

Future Perfect

Adventure

Future Perfect breaks down the barrier between having an idea for a game, and playing it with friends. The Future Perfect interface allows you to create...

Zen of Sudoku

Zen of Sudoku

Educational

Sudoku is a pattern-matching puzzle with one rule: place the numbers 1 through 9 such that there is only one of each in every row, column and 3x3 box...

Add mod Mods
RockDown - Fighter

RockDown - Fighter

Fighting

RockDown is a free 2 Player On-line Fighter game for owners of Natural Selection 2 created by a small group of developers from Unknown Worlds, Creators...

NS2:Last Stand

NS2:Last Stand

First Person Shooter

Last Stand places a team of marines in a desperate, no hope scenario. Against overwhelming odds and with limited equipment, the marines must survive until...

Post comment Comments
Cremat0r
Cremat0r

You really should earn hundreds of thousands of dollars with your game, you deserved it!

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Mkilbride
Mkilbride

(buried)

Jerk.

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GreenMagicDust
GreenMagicDust

can i join can be bt :)

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Cybio
Cybio

I think you should change on your NS1 Page that you are working on NS2 as a Mod for Hl2 ;-)

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Runekn
Runekn

NS2 is no mod, or is it that you are talking about?

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PaiSand
PaiSand

No, it was not meant to be a mod but a full stand alone game. Initially started being developed on the Source engine but due to the limitations on this engine they decided to go and start their own engine, now known as Spark.

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Cybio
Cybio

Yeah but you wrote that NS2 is a Mod for HL2 there ;-)

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Kalenov
Kalenov

God that was -years- ago xD Back when NS2 was first announced, to the best of my knowledge, it was supposed to be a HL2 mod :P I think that's what he's talking about.

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Cybio
Cybio

Yes, that is what I mean ;-)

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AltTabber
AltTabber

Hey I'm a big fan of Zen of Sudoku.

We need more games like that, well brain-trainers in general, but more specifically... perhaps Zen of Kakuro?

Kakuro.com

=)

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