He did it. A pathetic, pixelated sigh left his character's mouth. The thermometer dropped 5%.

The first level loaded: a burning cityscape, rendered in lush, hand-drawn sprites. He took control of Marco—no, wait. Ralf Jones. From King of Fighters . That was the Metal Slug 6 magic. Crossover chaos.

Because it runs on Atomiswave hardware (which is similar to the Sega Dreamcast), standard Neo Geo emulators won't run the original game.

There's an argument that ROMs help preserve gaming history by keeping these classic games alive. For rare or expensive games like some on the Neo Geo, ROMs can ensure that more people can experience them.

Metal Slug 6 introduced several mechanics that differentiated it from its predecessors: Metal Slug 6 for MVS | Neo-Geo Forums