Alien Storm is an action game developed and published by Sega for the Genesis, also known as the Mega Drive, released in 1991. Players fight off an alien invasion using a variety of weapons and characters across multiple levels with different gameplay styles. Its blend of beat 'em up action with occasional shooting gallery segments offered an engaging arcade-style experience at home. The game stood out for its cooperative gameplay and inventive use of the hardware, featuring detailed sprite work and environments.