I am no business man, I just make the games, but consider myself knowledgeable about game business, and have heard some stories about game studios saved from the brink. But I'm shooting from the hip here.
If you do non-game work you're going to hurt your company portfolio.
There are several game companies that do support roles and do fine. When they finish they work on their dream game until the money runs out again.
Can you get your whole company a contract? Do you have a reputation of releases as currency? For example, localization and outsourced QA is good. You work in Germany? Perhaps you can leverage your company to localize games in Germany? There is alot of laws in Germany, to get a game released there, and local approval that needs to be done. No company needs to have their sales hurt by a bad German translation. Is your company willing to take a pay cut? Usually a good team with good chemistry sticking together pays off in the long run. But is there any cancerous slack you can afford to cut?
For example in Canada Snowed In Studios leverages a diverse city and team to localize games for several regions.
Are there any local studios that want a share in your company? Condor, almost broke, was saved by Blizzard Entertainment and became Blizzard North. Blizzard North went on to make Diablo.
Can you rent out an office?
Some game companies are building mini games to make extra sales, from what I understand Bethesda's Fallout Shelter outsourced fallout shelter to Behavior Interactive. and CD Projekt Red outsourced Gwent card game, just a rumor. You could publish a game, or side game, for another company using their IP. Knock on doors.
Unity3D has a contract area, but recently the non-solo teams have been moving work to their own websites.
Knock on doors. Goto local or regional game dev meetups; the meet ups not for amateurs, and solicit a contract. Shake some hands. Best approach.
Contracting for casino games, for fast cash may pan out. Or try a serious game contract for a local government agency. In the USA/Canada, for example, Walmart uses games in their training modules. Hospitals and dentists have learning apps in demand. Many large firms use 3D learning games for workplace safety training. Museums, science museums, and zoos, need games as side-shows. For example, the Viking exhibit at the R0yal 0ntario Musuem, had a very simple game; build a viking longship game. Their exhibits usually change bi-yearly, giving 2x year opportunity.
There is a contracting company for Unity3D projects in Canada, you may have something similar in Germany. Some of these sub-contracters, have connections and might be able to find you a large client for a large team.
What about movies? Contact your local movie studios and see what they're looking for, you may need to work in unity, flash, or unreal, but they often want games, good games based on their movies and cartoons. Land one of those deals. In Canada there is a Cinema-Digital media partnership grant that is tapped into by cinema/TV companies. Usually they just want to spend the money they don't know what to do with. Its usually easy stuff like make a game where the unicorn finds candy, or make a fighting game with these action heroes. Knock on the door of the local kids TV station, your side game just might help them sell more toys.
No internet contract can replace a face to face meeting.
Lastly, if you're more about production than marketing your contract availability, you could find an intern at a university program or college to work with you to find clients.
Let me know if this gives you ideas.
Edit: You can also try teaching game development. I know some companies that do it to get by. Depends on whether your team is doing it for the money or the game.
