[PC] Steam - Brick Rigs - $11.79 AUD (was $21.50 AUD) - Fanatical

This seems to be a very good price for this game.

From the website:

Brick Rigs allows you to build many kinds of vehicles from a variety of bricks and experience their dynamic driving and destruction physics in a sandbox environment.
It doesn't matter if you want to build an dragster, a fire engine, a forklift, a helicopter, a plane or even a tank it will drive, break and function as you would expect it.

The multiplayer mode allows you to experience these physics together with your friends. You can race other players, organize demolition derby's or battle each other in a dog fight, the rules are up to you!

Enjoy!