Not sure how popular this will be, but I have been keeping an eye out for a low price for it for a while...so thought I would post just in case anyone else is too :)
Has 'very positive' reviews on Steam, although there are some grumbles about lack of updates and there has been a bit of controversy surrounding the devs.
Fwiw - there is also an option to buy 2 keys for £6.66 here...https://www.bundlestars.com/en/bundle/spintires-2-pack
Spintires™ is an Intel® award winning off-road driving experience designed to challenge the player's driving skill and endurance.
Take responsibility of operating large all-terrain Soviet vehicles and venture across the rugged landscapes with only a map and compass to guide you. Explore the levels and unlock portions of the map whilst discovering new trucks, fuelling stations, garages and lumber mills.
Collect lumber with the crane attachments and try to deliver them to the objectives. Try not to damage your vehicle or consume all of the fuel, prior to completing the objectives. Use the surroundings to your advantage, you may need to winch yourself free!
The real-time deformable terrain will challenge even the most seasoned offroader. Do you accept the challenge?