Six Degrees of Multiplayer Brutality. Step onto the Proving Grounds.

Sol Contingency is a six-degrees-of-freedom (6DoF) action game where you strap your virtual self into a one-seater battleship and go to war against your friends and foes as you explore the mazes of planetary mines and research stations. Armed with lasers and missiles, you will choose your path through the claustrophobia-inducing tunnels, going not just left and right, but up and down too! With freeform rotation in zero gravity, your ship can go in any direction you want. This is the real definition of 3D shooting!

 

 

Sol Contingency started out as a Descent fan tribute in 2012 and became its own IP during development. In 2016, we released Proving Grounds, a playable multiplayer preview version of the game which pits you against other pilots across the world in a 6DoF deathmatch as fast and brutal as you can imagine! Development on Sol-C was halted after Proving Grounds' release, but renewed interest in the game in 2025 has prompted me to restart this website and help our enthusiast community get the most out of what's there.

TECHNOLOGY

Sol Contingency: Proving Grounds was made with the Unreal Development Kit (UDK), harnessing the power of Epic's Unreal Engine 3 to give the game a then-current look. When we formed our team a decade ago, we were planning to stick with UDK to make the full game, single-player story included. Then Epic released Unreal Engine 4 to developers around the world, so we tried picking it up to make the definitive version of our game, with single-player and multiplayer modes, after Proving Grounds had been released. While this never materialized, a UE4 prototype does exist and may or may not be developed further, eventually. The current focus, though, is on updating and open-sourcing the UDK version.

GAMEPLAY

The gameplay of Sol Contingency is very close to other 6DoF games such as Descent and Forsaken. Fight menacing foes in zero gravity using all three axes of the 3D space, speed down tight tunnels and mine shafts, fire powerful energy weapons, gatling guns and missiles, charge up your shields to survive the continuous onslaught, and finally, climb to the top and win the match! However, the full version of Sol Contingency would not just have been about running and gunning. We planned for the game to challenge you with puzzles, environmental hazards and security systems. Combat is fast paced and adrenaline pumping like in other modern action games, but with the added complexity of 6DoF. And tying the single-player experience together, the game was planned to offer a progressive story, set in a universe specially written for Sol Contingency.

 

 

Download Proving Grounds

Proving Grounds is now available for Microsoft Windows computers. It's been developed and tested on Windows 7, 8.1, 10 and 11 (both 32 and 64 bit). To play Proving Grounds, your computer should meet the specs below.

SYSTEM REQUIREMENTS

Minimum:

Intel Core 2 Duo / AMD Athlon X2 processor
2 GB of RAM
Nvidia GeForce 8800 GTS 512 MB / AMD Radeon HD 7570
800 MB of hard drive space for installation

 

Recommended for smooth gameplay:

Intel Core i3 / AMD Athlon or Phenom II processor
4 GB of DDR2-RAM
Nvidia GeForce GTX 550 Ti / AMD Radeon HD 4890

DOWNLOAD LINKS: PROVING GROUNDS

Proving Grounds comes as an executable installer. Please read the Proving Grounds Player's Manual for more information on how to install and play the game!

 

To prevent downloads from being tampered with, .zip files have been encrypted. The password to open them is "solc"

 

Proving Grounds Player's Manual | Proving Grounds Installer | Mirror (Google Drive)

 

Mapping and Modding Tools

The Map Development Kit (MDK) is now available for use with Unreal Development Kit (UDK). By installing the MDK on top of a vanilla UDK installation, you can enable UDK to run Sol-C: Proving Grounds and start making custom maps for the game. The kit includes all assets we used to build the maps seen in Proving Grounds, plus a few unfinished and experimental maps for your enjoyment. Knowledge of UDK mapping is required, but check the links below to get you started!

DOWNLOAD LINKS: MAP DEVELOPMENT KIT

The MDK requires an installed UDK on your machine. Since UDK is no longer distributed by Epic Games, I am providing an archive download of UDK in the exact version we used to make Proving Grounds.
I have also zipped up a full UDK tutorial video series from 3D Buzz that was released when UDK was new. It's a little outdated, but it provides excellent guidance on how to make maps, use the material system, create game logic and much more. If you are new to UDK, give these videos a look!

 

To prevent downloads from being tampered with, .zip files have been encrypted. The password to open them is "solc"

 

Map Development Kit | MDK Readme.txt | UDK-2014-05 Installer | UDK Video Tutorials by 3D Buzz

 

Join the Community

Sol Contingency has its own Discord server, but the game has found a new home on the Australian 6DoF Online Discord! Regular weekly and spontaneous matches are hosted here and the Sol-C developers hang out with the players. Every 6DoF game is welcome including Descent, Overload, Geocore and others. This is your best place to join up!