That might be the first recorded case of a subpar headline detracting from actual quality content :)

What about "Adventures in MAME ROM dumping and games preservation"? It's the one that might stand the test of time to be useful for posterity.

I accidentally found a phantom MAME game revision

Might be more accurate to change “accidentally” to “intentionally”.

Or “I found a bad dump in MAME and corrected it”

I expected to add a game to MAME but instead proved that it didn't exist

Works fine - thanks!

Quite frankly no, it’s not. The original title was fine and a pleasant way to cap the story off.

It's the 'accidentally' part that's the problem. Finding out that you need to delete something is not the same as accidentally deleting it.

'Unexpectedly' would be a little more accurate I think. Or just 'That time I deleted a game from MAME'.