The Atari 7800 ProSystem, or simply the Atari 7800, is a home video game console released by Atari Corporation in May 1986 as the successor to both the Atari 2600 and Atari 5200. It can run almost all Atari 2600 cartridges, making it the first console with backward compatibility. It shipped with a two button controller, instead of the 2600-standard Atari CX40 joystick, and with Pole Position II as the pack-in game. The European model has a gamepad instead of a joystick. Most of the early releases for the system are ports of 1981–1983 arcade video games. The final wave of 7800 cartridges is closer in style to what was available on other late 1980s consoles, such as Scrapyard Dog and Midnight Mutants.