US Patent 10092829 Attachment

An example attachment is attachable to a game controller including a controller-side slide portion on which a controller-side operation button is provided. The attachment includes a strap and an attachment-side slide portion, the attachment-side slide portion having a first side and a second side opposite to each other in a predetermined slide direction. The attachment-side slide portion is provided on a first surface of the attachment, wherein the attachment-side slide portion is configured to slidably engage with the controller-side slide portion in the predetermined slide direction. The controller-side slide portion is insertable into the attachment-side slide portion from the first side.