A second player can jump in at any time with their own ship and help you fight through the game.
In 2050 a group of rebels tries to conquer Earth. To repell them, Operation Viper Phase 1 is created and you are part of it. Flying a space fighter, the game features eight stages full of enemies and bosses to conquer.
The original version was quickly replaced by an updated release in August 1995 featuring several gameplay changes like removing the limited ammunition for the secondary weapons. In the US this release was called "Viper Phase 1: USA".
This page contains co-op info for Viper Phase 1 on the Arcade [Classics]. All information about Viper Phase 1 was correct at the time of posting. Information is subject to change. If you see any errors please email us.