Metal Slug 4 (Neo Geo)

Metal Slug 4 continues the story of the fight against General Morden. Unlike the previous games, which were made by SNK before it went into bankruptcy, this game was made by a third-party developer, Mega Enterprise, and was published by Playmore, who would become SNK Playmore after SNK's resurrection.

Debug Menu
It is worth noting this Debug menu is shared by Metal Slug 2, X, 3, 4, and 5.

To access the debug mode, open the game in Console Mode and set debug developer mode On at the Neo Geo boot-up screen: this can be done via the Kawaks emulator, the Nebula emulator or using the Neo Geo UniBios.

Enter the game, and press COIN up the game twice during gameplay: after pausing, the debug menu will appear - with options to activate the debug dipswitches (which can be activated separately through other options using Kawaks) and even the ability to play on any regular level, and even some test levels not available in the actual game. There is also a Sound Test screen, and since this version of debug mode is carried over from Metal Slug 3, the Color Test menu is absent.

SET DEBUG DIP

 * ムテキ - Invincibility
 * VIEW INFOMATION - View debug information.
 * イシデモＰＡＵＳＥ - Pause at any time
 * VIEW GEO SCROLL A - 1st plane check, shows the walkable ground, makes the foreground choppy as it scrolls when activated. May linger around if not turned off proper.
 * VIEW GEO SCROLL B - 2nd plane check, makes the background choppy as it scrolls when activated.
 * VIEW ATTACK RECT - View attack hitbox.
 * VIEW BODY RECT - View body hitbox.
 * VIEW PUSH RECT - Unknown
 * ムセイケソ　ゾレネード - Infinite grenades.
 * ムセイケソ　ＰＯＷガソ - Infinite ammunition.
 * ＶＩＥＷ　ＰＡ　ポイント - A sprite appears, showing the player's respawn point.
 * Ｄボタソ、テキ　ゼソメツ - Press D to destroy all onscreen enemies (no score bonuses)
 * "PAUSE" Off - Disables the blinking pause message.
 * BGM OFF - Most likely turns off the background music.
 * WARN - Purpose unknown.

Glitched Advisory Screen
Many Neo Geo games display a parental advisory screen when a US BIOS is detected. Metal Slug 4 is no different; however, the character set normally used on this screen was mistakenly replaced with the graphics for the character selection screens and Striker portraits from The King of Fighters 2000, rendering the screen a jumbled mess. This occurs in both MVS and AES modes.