It's not a bug per se, it's just different from the real thing.
An actual arcade board renders the levels with a "sliding door" effect, while MAME builds entire chunks of a level at once and then displays them as a complete screen buffer (depending on the version).
It's just evidence Mitchell's score is not what he says it is.
An actual arcade board renders the levels with a "sliding door" effect, while MAME builds entire chunks of a level at once and then displays them as a complete screen buffer (depending on the version).
It's just evidence Mitchell's score is not what he says it is.