Metal Slug 2 is a run and gun video game developed by SNK. It was originally released in 1998 for the Neo-Geo MVS arcade platform as the sequel to the 1996 game Metal Slug. The original version of the game had extensive slowdown and performance issues, eventually leading SNK to release a modified version in 1999 titled Metal Slug X: Super Vehicle-001 (メタルスラッグX). It has been ported to the Neo Geo CD, PlayStation, Virtual Console, iOS and Android, and to the Wii, PlayStation Portable and PlayStation 2 (as part of the Metal Slug Anthology). The game added several new features to the gameplay of the original Metal Slug, such as new weapons, vehicles and the ability to transform the character. It received generally positive reviews. It was followed by Metal Slug 3 released in 2000.