> I bought what I thought was New Zero Team to redump the bad rom. To my surprise it > ended up being Zero Team 2000, which appears to be a rare final update of the > game(?).
I'm not super clear on exactly what happened, but wikipedia is saying their arcade division closed down in 1999 when the company flirted with bankruptcy. Given the company's health, it would be surprising if they released an update to a 7 year old game in 2000.
So maybe this is a bootleg hack? Still a cool find either way though.