These Hallmark Innovations cards have been available for some time now, but I didn't come across them until just recently. This set wishes their lucky recipients "Happy Birthday" with a design from a classic arcade game, an appropriate corny joke (the Galaga one is borderline vulgar!), and a familiar tune from the classic title.

This video recorded by Hot Mess only shows the Tetris, Pac-Man, and Galaga pieces, but there are also cards for Dig Dug, Frogger, Centipede, and Kung Fu, the last of which plays a clip of "Kung Fu Fighting", of course. How long before technology brings us to the point when Hallmark sells us cheap greeting cards with the full playable game embedded inside?