Mario & Battle City

Mario & Battle City is two homebrew ports of Super Mario Bros. and Battle City slapped onto a multicart.

Unused Graphics
The fonts have various unused symbols including spades, hearts, diamonds, clubs, arrows, and other weird stuff.

Unused Text
Some error messages are present at, slightly edited to fit on this page: ADRESS ERROR   ILLEGAL INSTRUCCZERO DIVIDE     CHK INSTRUCTION TRAPV INSTRUCT  PRIV VIOLATION M68K TRACE     LINE 1010 EMUL  LINE 1111 EMUL  ERROR EXCEPTION TRAP CPU NUMERO 2