3. Metal Slug X

Metal Slug X gameplay

In this upgraded version of Metal Slug 2, you still get to fight against hostile aliens, but now with everything that was wrong fixed and an increased the difficulty.

But not only that, it also introduces new aspects to the gameplay; it has new music, stages are set in different times of day, all levels contain more enemies and a new placement for them among many other additions that make the game even better.

Time goes by: Levels can be set in different time of day.

A lot of action: This version gives you intense new levels.