The IBM PCjr was IBM's attempt to gain its own foothold in the then-emerging computer gaming market, competing against the well-established Commodore 64 and Apple II. It traded compatibility with the IBM PC for increased graphical and sound capabilities; however, this lack of compatibility would prove to be its downfall, and it would be discontinued after only a year on the market.
The PCjr's graphics and sound hardware would continue on for years to come thanks to the Tandy 1000, a clone of the PCjr featuring better compatibility with the IBM PC. Unlike the PCjr, the Tandy 1000 was a hit and games supporting its PCjr-derived capabilities would eventually come to be referred to as "Tandy-compatible", reducing the PCjr to a footnote.