Video Game | Action, Adventure
When general Morden, a corrupt and powerful army general, has staged a coup d'etat, Marco Rossi and Tarma Roving, members of an elite army task force, use the Metal Slug tank to crush Morden's rebellion and restore order.
Defeating Allen in Mission 3 without taking any damage or by killing him with just grenades, a tiny hidden UFO can be seen towards the top of the screen.
The U.S Version changes the blood color from white to red. This is not permanent, though, as you can use the options to change it back to red.