iTraceur is a challenging single-player game developed by Parkour Games. It comes with a complex graphic engine that allows users to experience fully animated realistic moves. The users control a Traceur, which is basically a free-runner who makes various stuns in order to advance to more complex challenges. The game enables users to move the character using keyboard arrows, or by the well-know gamer keys W, A, S, D. What makes this different from other similar games is the fact that the movement of the Traceur is very well animated in order to mimic a real life person, which improves the gameplay. The options menu lacks customization since it only lets users make changes upon the sound and music volume. This challenging game comes with a good functionality and the resource consumption is low and does not burden one's Mac. One of the key features of the game is that users can use a wide variety of items and parts of buildings for climbing and doing various combos and moves.
All taken into consideration, you should give iTraceur a try; it is free, it has a well-polished interface with nice effects and animations, and allows users to explore large levels with various grades of difficulty.