ALEXANDRIA, Va., March 19 -- United States Patent no. 12,254,781, issued on March 18.

"Educational multiplayer card game system and method" was invented by Michael Wayne Riffle (Granite Bay, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An educational multiplayer card game, system, and method of play that combines strategy and randomization is provided. More particularly, the present disclosure relates to an educational card game including cards having synonym and antonym attributes, wherein cards can be chained together according to a synonym attribute and cards can perform contrast strikes according to an antonym attribute. Further, the educational card game can include more than one language on ea...