Rezon

Rezon
Developer: Allumer Publisher: Allumer Platform: Arcade (Seta hardware) Released in JP: 1991 This game has unused code. This game has unused text.

Rezon is an arcade shooter in the same vein as R-Type.

Audit/Input Screen

Hold P2 Start + P2 Left + P2 Down + P1 Button 1 while the machine starts. You'll need to hold it through the RAM test. When it appears, you can let go of all buttons except P1 Button 1; letting it go will exit the menu.

ASCII Art

Present at 0xD6B0 in the game data is some ASCII art that spells out REZON:

               ZZZZZZZZZ                
RRRRRRR EEEEEEE       Z  OOOOO  N     N 
R     R E            Z  O     O NN    N 
R     R E           Z   O     O N N   N 
RRRRRRR EEEEEE     Z    O     O N  N  N 
R  R    E         Z     O     O N   N N 
R   R   E        Z      O     O N    NN 
R    RR EEEEEEE Z        OOOOO  N     N 
               ZZZZZZZZZ                

It uses 0's for newlines rather than ASCII standard newlines. It's unknown whether this was used in the game (as a temporary title screen, perhaps) or if it is an Easter egg in the code.

(Source: sudden-desu)