1. A game apparatus, comprising: a housing having a display panel that displays at least a virtual game space; and an operation unit having an operation portion and a detection portion, wherein the operation unit penetrates the display panel, the detection portion is located inside the housing, and the operation portion is exposed outside the housing.
2. An information processing apparatus, comprising: a housing having a display panel; and a first operation unit having an operation portion and a detection portion, wherein the first operation unit penetrates the display panel, the detection portion is located inside the housing, and the operation portion is exposed outside the housing.
3. The information processing apparatus according to claim 2, wherein the display panel has a hole through which the operation unit penetrates.
8. The information processing apparatus according to claim 5, wherein the display panel is approximately elliptical form, further comprising a first rim portion along at least an arc portion of the display panel.
13. The information processing apparatus according to claim 2, further comprising a second operation unit having an operation portion located on a surface of the housing different from the surface on which the display panel is provided.
15. The information processing apparatus according to claim 14, further comprising a third operation unit having an operation portion and a detection portion, wherein the third operation unit penetrates the display panel, the detection portion is located inside the housing, the operation portion is exposed outside the housing, and the first operation unit and the third operation unit are provided in a left side area and a right side area of the display panel, respectively.
16. The information processing apparatus according to claim 15, wherein the first operation unit and the third operation unit are provided in a left end portion and a right end portion of the display panel, respectively.
17. The information processing apparatus according to claim 2, wherein the information processing apparatus is a hand-held type.
19. The information processing apparatus according to claim 2, wherein the first operation unit can perform a direction input by tilting or sliding the operation portion.
20. The information processing apparatus according to claim 2, wherein the first operation unit can perform a depression input by pushing down the operation portion.
25. The information processing apparatus according to claim 2, further comprising a motion detection module configured to detect a motion of the housing.
26. The information processing apparatus according to claim 25, wherein the motion detection module includes at least one of an acceleration sensor and a gyro sensor.
27. The information processing apparatus according to claim 2, further comprising a vibrator configured to apply vibration to the housing.
37. The information processing apparatus according to claim 3, further comprising a generating module configured to generate image data corresponding to a display screen to be displayed on the display panel, wherein the generating module generates the image data irrespective of the presence or absence of a hole of the display panel.