Defender is an iconic side-scrolling shooter video game originally developed by Williams Electronics, which was adapted for the ColecoVision game console. Released for the arcade in 1980, it was later ported to various home systems including the ColecoVision, which saw its release in 1983. The game is set in a fictional outer space landscape where the player pilots a spacecraft tasked with defending humanoids from alien abduction. It's renowned for its challenging gameplay, fast-paced action, and was one of the earliest examples of the scrolling shooter genre, influencing many subsequent games.