A multi-media interactive play system has a number of play elements situated in a variety of play environments or play media. The play elements are linked to a common record of participant performance, progress, character attributes, etc. The participant's performance in the play elements determines the play elements to which the participant may proceed as well as the play parameters of the play element in which the participant is currently involved. The play elements are thus interlinked to define a sequence or path network along which the participant advances. By advancing through the play elements the participant carries out a plot, story, theme, etc. that attaches a significance to the successful completion of a given play element or elements. Also disclosed in a variety of play elements suitable for use in the system, an example of a plot or theme that may be carried out by the system, and a send/receive radio frequency network that may be used to track play participants in a play center.

A trading card includes a main portion having any character of a plurality of characters represented on at least one surface and an electronic component for contactless communication, which is contained in the main portion. The electronic component includes a storage portion which stores data related to the character represented on the main portion and a circuit which writes data received from an external apparatus through contactless communication into the storage portion.

A multi-media interactive play system has a number of play elements situated in a variety of play environments or play media. The play elements are linked to a common record of participant performance, progress, character attributes, etc. The participant's performance in the play elements determines the play elements to which the participant may proceed as well as the play parameters of the play element in which the participant is currently involved. The play elements are thus interlinked to define a sequence or path network along which the participant advances. By advancing through the play elements the participant carries out a plot, story, theme, etc. that attaches a significance to the successful completion of a given play element or elements. Also disclosed in a variety of play elements suitable for use in the system, an example of a plot or theme that may be carried out by the system, and a send/receive radio frequency network that may be used to track play participants in a play center.

A multi-media interactive play system has a number of play elements situated in a variety of play environments or play media. The play elements are linked to a common record of participant performance, progress, character attributes, etc. The participant's performance in the play elements determines the play elements to which the participant may proceed as well as the play parameters of the play element in which the participant is currently involved. The play elements are thus interlinked to define a sequence or path network along which the participant advances. By advancing through the play elements the participant carries out a plot, story, theme, etc. that attaches a significance to the successful completion of a given play element or elements. Also disclosed in a variety of play elements suitable for use in the system, an example of a plot or theme that may be carried out by the system, and a send/receive radio frequency network that may be used to track play participants in a play center.

A multi-media interactive play system has a number of play elements situated in a variety of play environments or play media. The play elements are linked to a common record of participant performance, progress, character attributes, etc. The participant's performance in the play elements determines the play elements to which the participant may proceed as well as the play parameters of the play element in which the participant is currently involved. The play elements are thus interlinked to define a sequence or path network along which the participant advances. By advancing through the play elements the participant carries out a plot, story, theme, etc. that attaches a significance to the successful completion of a given play element or elements. Also disclosed in a variety of play elements suitable for use in the system, an example of a plot or theme that may be carried out by the system, and a send/receive radio frequency network that may be used to track play participants in a play center.

A chessboard toy is provided. A first driving coil is arranged on an inner ring of a knob, and a second driving coil is arranged on a rotating member; and the first driving coil and the second driving coil mesh with each other, so that a rotation sensing member can be controlled by direct mechanical transmission; mechanical motion of the knob can be converted into an electrical signal of the rotation sensing member; and use of a light sensing mechanism or a magnetic sensing mechanism is avoided. Therefore, structural complexity and a fault rate are reduced. In addition, compared with the light sensing mechanism and the magnetic sensing mechanism that have high costs, a technical solution can also significantly reduce production and manufacturing costs.