[hanasu]

To be fair, many of those games are rather uncommon and may just not accessible for public play by anyone. TG arcade scores must be done on original hardware. So some scores are a testament to rarity more than anything.

Particularly on the MAME (emulator) side of arcade scoring - on a previous incarnation of the TG website, the rules for submission to a game were not public until a score had been submitted for that game. Some folks with many high scores were simply submitting any score at all so that others could even play along.