Arcade Classic 4 – Defender / Joust

Arcade Classic 4 – Defender / Joust –
Defender is a horizontally scrolling shooter video game developed by Williams Electronics in 1980 and released for arcades in 1981. The game is set on either an unnamed planet or city (depending on platform) where the player must defeat waves of invading aliens while protecting astronauts.
Joust is an action game developed by Williams Electronics and released in arcades in 1982. While not the first two-player cooperative video game, Joust’s success and polished implementation popularized the concept. Players assume the role of knights armed with lances and mounted on large birds (an ostrich for Player 1, a stork for Player 2), who must fly around the screen and defeat enemy knights riding buzzards.