Every motocross games since 1985 owes a lot to the NES sensation Excitebike. When the NES was released stateside, Excitebike was one of the launch titles, amd it managed to be simple and revolutionary at the same time. The simplicity of the game was seen in its gameplay. The revolutionary aspect was in its ability to allow gamers to custom-design their own tracks. This was huge for the 1980s!
Excitebike paved the way for every Nintendo racing game that followed it. Eventually, the Excite series grew with numerous sequels and ports, all thanks to the original Excitebike.
Top 100 Video Games of All Time #77 - Excitebike