A magnetic playing card configured to magnetically couple to a second magnetic playing card having a plurality of edge magnet groups and a plurality of interior magnet groups, comprising:
- a front side including a playing-card front face;
- a back side including a playing-card back face;
- a substrate disposed between the front side and the back side, the substrate having a top surface, a bottom surface opposite the top surface, and four edges coupled to the top and bottom surfaces, the four edges comprising a first major side, a second major side opposite the first major side, a first minor side, and a second minor side opposite the first minor side, the four edges surrounding a substrate interior comprising a center;
- a plurality of apertures formed through the substrate;
- and
- a plurality of magnet groups disposed within the plurality of apertures, the plurality of magnet groups comprising:
- (i) four edge magnet groups with one edge magnet group disposed at each of the four edges;
- and
- (ii) at least two interior magnet groups disposed at the substrate interior, including a first interior magnet group disposed on a longitudinal centerline extending between the first minor side and the second minor side and a second interior magnet group disposed on a lateral centerline extending between the first major side and the second major side;
- wherein each magnet group is defined by a pair of apertures comprising a first aperture and a second aperture arranged side-by-side;
- wherein each of the pair of apertures contains a composite magnet fixed within the respective aperture, each composite magnet comprising a first sub-magnet and a second sub-magnet fixed together, the first sub-magnet having a polar direction opposite a polar direction of the second sub-magnet;
- wherein, for each of the four edge magnet groups:
- (a) in the composite magnet in the first aperture, an edge north pole of the first sub-magnet and an edge south pole of the second sub-magnet both face toward the nearest edge, the edge north pole being closer to the top surface than the edge south pole;
- and
- (b) in the composite magnet in the second aperture, an edge south pole of the first sub-magnet and an edge north pole of the second sub-magnet both face toward the nearest edge, the edge south pole being closer to the top surface than the edge north pole;
- and
- wherein, for each of the at least two interior magnet groups:
- (a) in the composite magnet in the first aperture, an interior north pole of the first sub-magnet and an interior south pole of the second sub-magnet both face toward the top surface;
- and
- (b) in the composite magnet in the second aperture, an interior south pole of the first sub-magnet and an interior north pole of the second sub-magnet both face toward the top surface;
- whereby any edge magnet group or any interior magnet group of the magnetic playing card is configured to magnetically couple to any edge magnet group or any interior magnet group of the second magnetic playing card, in either face-up orientation.