physics engine

engine:
The code or software used as the basis for building a game. The game engine literally powers the entire game. Some developers license a game engine to other developers who build a new game based on the technology of the game engine.

Physics_engine



    eg. List_of_games_using_physics_engines

    cf. Game_engine

Despite the specificity of the name, game engines are often used for other kinds of interactive applications with real-time graphical requirements such as marketing demos, architectural visualizations, training simulations, and modeling environments.