Used 3DBlur for Mac?
Developer’s Description
To play 3Dblur, simply steer your plane using the arrow keys or the mouse. You will always move foreward, although more slowly when you're flying upward. When you complete an obstacle, the number of points you receive briefly appears in the middle of your screen. Your total score is displayed in the upper left corner. Some noteworthy or especially difficult obstacles have special names that appear on your screen when you pass them. These names also show up on the high scores list as commendations.
3DBlur is in continuous development and currently features four obstacle courses, seven terrain styles, and a level editor.