Unity Physics Engine
The Unity Engine is the most popular game development tools on
the global market today. A whopping 47% of game developers rely
on it as the foundation of their games. It is very
cross-platform and games can be ported to devices ranging from
PC's to mobile devices. Perhaps the largest reason for its
success, however, is its simple UI and ease of use. A large part
of game development with Unity requires little coding and
therefore speeds up the process.
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The UI includes an easy to use menu creator as well as drag and drop placement of rigid body objects. Unity focusses mostly on rigid body as opposed to soft body physics, as this is all most game developers need for every day games. Currently it is still rare to see a game go through the trouble of implementing softy body physics, however, this may some day develop as a standard when game engines become advanced enough to make it an easy thing to add.