Jack Bros.

This patch translates all editable text and some graphics in Jack Bros. to German. It also includes Parasyte’s Debug Patch. To be used with the US version ROM.

Author: KR155E

• separately saves progress for all “three” characters from the Select Player screen and/or by entering passwords, i.e. passwords will replace your save games
• adds secret character to the Select Player screen. Hold L + R while cycling through characters
• erase individual character saves by pressing Left D-Pad Down four times in a row while they are highlighted on the Select Player screen. There are warning sounds
• compatible with the North American version only.
• does not apply to the Japan ROM but you can use the secret language-swap button code built into the original game (!). Hold L, R and Left D-Pad Left then press Start on the title screen; this will switch languages and save the new setting to SRAM
• adds ability to enable/disable the debug mode. Hold Select while booting the game; this setting is also saved to SRAM. The title screen shows “DEBUG” in the bottom right when enabled
• enables the Japan-only sound test and fixes the Japanese text to display correctly

Sources here.

Author: Vague Rant

This patch re-enables two debug cheats for a level select and invincibility which normally couldn’t be accessed, because the programmers deactivated them for the final version of the game.

Author: Parasyte