Nintendo's entry into the 16-bit gaming business came packaged with "Super Mario World." It lagged behind the Sega Genesis in popularity for some time but eventually caught up and evened the race between the two systems. The Super NES and Sega shared the top of the video game market for the next five years or so, until the advent of 32-bit games. This era of competition had the effect of increasing the selection of games available, with a wider variety of third-party games then ever before being developed and marketed for both systems.