MAIN FEATURES・ARCADE MODE (MAIN MISSION):
Play the original arcade version of “METAL SLUG X” from Missions 1 to 6, and fight your way through the battlefield to foil General Morden's new coup attempt!!
・MISSION MODE (STAGE SELECT):
Play your favorite stages at will and train alone or with a brother-in-arms on the missions you have unlocked so far!
Connect to Steam and clear missions with friends far away via Online Co-Op Play.
Find a fellow countryman or foreign ally and let the mission begin!
Configure control, language, video display, and sound volume settings.
Check your current rank and score in“METAL SLUG X” at any time,
and compete with other players to become the world's No. 1 soldier!
** WILL NOT RUN ON WINDOWS XP **