Voila. The "Continue?" screen now reads "Push Start." No credits needed. You have achieved

You must dump your own NEOGEO ROMs from PCBs or purchase the Metal Slug Anthology on PS2 and extract the data. For educational purposes, we discuss the process only.

pushed the limits of the series, introducing branching paths, deep-sea expeditions, and a final mission in space to stop the "Rootmars" leader. Later entries like Metal Slug 4 and