Whirlybird Run is a fast moving arcade game in which you must pilot a helicopter across mountain ranges and through a series of underground caves. On your way, you will meet a collection of enemy craft to be overcome, some of which must be avoided as they cannot be destroyed.

As soon as the program starts, a title screen will be displayed, followed by a screen showing all your various opponents and their point value. Those with a point value of zero cannot be destroyed, you will have to avoid them. Pressing the fire button at this point will start the game.

Your helicopter is controlled by the right joystick. Pressing the Fire button will fire bullets and bombs. Your aim is to achieve as high a score as possible by destroying the enemy craft. If you hit any of them or if you hit the ground or the top of the screen, your ship will be lost. You begin the game with four ships; each time one is lost, the game restarts automatically with a new one until all four have been destroyed. The number of helicopters you have left is shown in the centre at the top of the screen. Your score is shown on the right.

In the top left hand corner of the screen is a read bar indicating your fuel level. If this indicator falls to zero, your ship will fall and crash. You can increase the level, however, by hitting the fuel tanks positioned at intervals along the ground. By hitting these tanks frequently, it is possible to maintain the fuel level at its maximum.

At the end of the game, a score screen will be displayed, showing the score for the previous game and the top five scores since play began. If you wish to play again, pressing Fire will begin a new game.

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