Downloading rigsofrods 1.0 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. This application's bundle is identified as com.yourcompany.rigsofrods. Rigsofrods for Mac belongs to Games.
This free Mac app is a product of vBulletin Solutions, Inc. You can execute this free app on Mac OS X 10.6 or later. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The following versions: 1.0 and 0.3 are the most frequently downloaded ones by the program users.
From the developer:
Rigs of Rods is an open source vehicle simulator based on soft-body physics
What makes Rigs of Rods different to most simulators is its unique soft-body physics: vehicles, machines, objects, etc. are simulated in real-time as flexible soft-body objects, giving the simulation an extremely accurate behavior which entirely depends on the physical construction of the vehicles or objects you create.
You may want to check out more Mac applications, such as Fish Tycoon, Kudos Rock Legend or OOTP8, which might be similar to rigsofrods.