Contra III: The Alien Wars on the SNES supports two players in cooperative gameplay. Players can team up with a friend and take on the alien invasion together. Both players can control one of the two protagonists, Bill Rizer and Lance Bean, simultaneously. Cooperative play adds an extra level of excitement and coordination as players work together to survive the intense battles and overcome the challenging levels. With two-player mode, Contra III offers an opportunity for shared experiences and cooperative gameplay strategies.