Gunbird 2 (Dreamcast)
A debug menu can be accessed simply by holding Start at the Sega logo screen and keeping it held until the menu appears. If the "No VMU found" screen appears instead, the debug menu will appear by exiting the screen. All of the options are pretty much self-explanatory.
Actually not just a stage select, this screen also contains a character select, mode, rank, time, invincibility, and infinite bomb toggles,
Your standard controller input test.
Your standard sound test. Note that the pitch and volume displays only appear if effect is selected.
Code entry screen.
Check if arcade version codes work on Dreamcast version; Document the codes.
Pcm Strem Play
Your standard voice test.