Found some old key. In news on Steam, it reads:

Wolves!
Redeem this promo code and get yourself White Thunderwolf + 10000 weapon parts + 5 boosters!
WTHUNDER
Happy New Year!
For Russ and the Allfather!

The code will be valid until 10.01.

So. Whoever wins, has a chance to get this bonus as well. I expect this game to be played.