Remember RBI Baseball for Nintendo? For those that are interested, I’ve made a modified version of the original RBI Baseball ROM with 2012 ZiPS.

For use of the ROM, seek ye an NES emulator, which can be found in a number of open-source flavors. I use FCEUX.

Any other old NES ROMs, I can’t legally tell you anything about how to find them, but the rumors on the internet are that a “search” engine can find said ROMS. But I don’t know nything about that.