Front Mission: Gun Hazard

Front Mission: Gun Hazard is a side-scrolling platformer/shooter spin-off of Front Mission, a series of tactical RPGs about robots.

Hidden Voice Sample
A partial recording of a vulgar diatribe is contained in the ROM. This is sampled from a phone call by a member of a UK radical right-wing organization Combat 18, used in the song "Dog Tribe" by Fun-Da-Mental. Its full transcript (bolded segment only included in game):

The sample is used very quietly and covertly just after the end credits.

Debug Mode
Start the game with the Pro Action Replay code active to access this debug menu, which allows you to customize a wanzer, jump to a specific stage, etc. Data can also be loaded/saved from/to a saved game, which makes this function as something of a save editor.

Selecting "BEGINNING" or "CONTINUE" from the scene menu lets you start or continue the game, respectively.

Sound Test
Select "MUSIC" from the scene menu to access a basic sound/music test. Press Y to play the selected music track or sound effect and Start to return to the debug menu.