Abstract: A non-limiting example information processing apparatus comprises a housing, and a first portion of the housing is formed in an elliptical form when viewing from the front. A display panel and a touch panel constitute one main surface of the first portion. Holes are formed in left and right end portions of the display panel and the touch panel, and two operation sticks are provided through the two holes. When viewing the first portion from the front, an area except key tops of the operation sticks becomes a display area.

Abstract: An example touch pen attachment is attachable to a game controller including a controller-side slide portion. The touch pen attachment includes a housing, an attachment-side slide portion, a stopper portion, and a touch pen portion. The attachment-side slide portion is configured to slidably engage with the controller-side slide portion in a slide direction, wherein the attachment-side slide portion has a first side and a second side with respect to the slide direction, and the controller-side slide portion is insertable into the attachment-side slide portion from the first side. The stopper portion stops a slide movement, in an insertion direction, of the controller-side slide portion. The touch pen portion is on at least one of an end portion of the housing on the first side in the slide direction and another end portion thereof on the second side in the slide direction.

Abstract: An example supporting device supports two game controllers. The supporting device includes a support section and a main section connected to the support section. The support section includes a first slide member and a second slide member. The first slide member is provided in an area of the support section toward a first side in a predetermined direction, and the second slide member is provided in an area toward a second side. The slide members are capable of slidably engaging with rail members of the respective game controllers in a predetermined slide direction. The first slide member includes a first terminal provided on a first opposing surface. The second slide member includes a second terminal provided on a second opposing surface. The main section includes a first grip portion for being gripped by a user, and a second grip portion for being gripped by the user.