A handheld electronic game device shaped as a toy gun with two handles and two
triggers, and one or more built-in display screens. The device may be played as
a stand-alone device, or played with an external game unit having a display screen.
When played with an external unit, the handheld device and the external unit may
be provided with an aiming relationship detection system to detect an aiming of
the handheld device with respect the display screen of the external unit. In one
example, the screen of the external unit displays a terrain or a scene seen by
the player, and the built-in display of the handheld device simulates a view seen
through a scope used on traditional guns. An additional display screen may be provided
on the handheld device to simulate a radar scan or satellite image.