Cool Riders is a spiritual sequel to OutRunners

OutRunners

OutRunners is a racing video game developed by AM1 and released by Sega in 1992. It constitutes the third release in the arcade Out Run series and was ported to the Mega Drive by Data East in 1994.-Description:thumb|OutRunners two-player cabinet...

, released by Sega

Sega

, usually styled as SEGA, is a multinational video game software developer and an arcade software and hardware development company headquartered in Ōta, Tokyo, Japan, with various offices around the world...

 in 1994. It has a similar premise to OutRunners, though rather than drive cars, you ride bikes. It also uses digitised graphics similar to the likes of Mortal Kombat

Mortal Kombat (video game)

Mortal Kombat is a 1992 fighting-game developed and published by Midway for arcades. In 1993, home versions were released by Acclaim Entertainment. Released in the Fall of 1994, the Microsoft Windows 3.1x version was released by Activision Interactive. It is the first title in the Mortal Kombat...

.

The game is currently unplayable through emulators such as MAME

MAME

MAME is an emulator application designed to recreate the hardware of arcade game systems in software on modern personal computers and other platforms. The intention is to preserve gaming history by preventing vintage games from being lost or forgotten...

. This is because Cool Riders was built for very strange arcade hardware, seen to be a mix between Sega Model 2 and Sega Titan Video. Graphics are compressed in a way not seen in any other piece of Sega hardware.