Battle City: 4 Players Hack

Play classic Battle City with a four-score or 4-player adapter. Also adds some features (selectable) and 35 levels from Tank 1990 (levels 35-70).

Additionally an addendum patch exists which adds:

-Ability to Choose between 1-4 players
-Ability to Move cursor with Up/Down buttons
-Every option is YES by default on every emulator
-Other small changes to make the game work correctly with any number of players