I'm not sure about adding games. Though, I guess it should be possible. Could add 901 or 1001 or whatever lol. You can add/change the sounds....like instead of a bonk when you miss, it could be some other sound...like a South Park character saying "that sucks!" or something

Anyone have good suggestions as to buying an EPROM reader/writer? I'm sure Ebay or Amazon (both blocked at work) so I will look later.