The invention provides a deck of playing cards containing a plurality of suits with at least one language suit, wherein each card includes thereon one or more characters, words, phrases, and/or sentences in that particular language as its primary content. At least one suit may be a picture suit, wherein each card includes thereon pictorial, symbolic, graphical, image, and/or animation representation as its primary content. Each suit is identified by a symbol or icon, which is exactly the same on each card within each suit. Each card within a suit carries at least one different and unique index thereon representing its order within the suit. Each and every card within a suit has exactly one matching card with identical index and identical meaning(s) of content in each other suit. Players learn foreign languages against native language and pictorial presentation on matching cards.