David Haywoodさんのイラストまとめ

One thing I don't understand is why Gals Panic 4 got reissued multiple times in 2000/2001 with different titles, including as 'Gals Panic SU' even if Gals Panic SU was already a unique entry in the series. What does SU even stand for? Super?

Peter Wilhelmsen dumped the Luòkè wángguó-wángzhě huīzhāng / 洛克王国-王者徽章 / Locke Kingdom: The King's Badge Monon cartridge (excluding the sound MCU of course) This one will require the badge scanner to be emulated before it goes in game however.

and this is Detective Conan Volume 2 (Japan) (SC0015-DCS)

Again these Special series ones always have custom presentation (and rank you on your performance)

@suddendesu can even be done on 'Slipstream' which was on Sega System 32 (but also by Capcom) It clearly isn't a mistake.

*shrug*

Another rare one to show up is 'The Dice Game' or maybe 'Dice - The Dice Game' It's more difficult for me to get excited over this one, because it's clearly a bootleg. We're told this version was sold by Tuning in Germany, it's meant to be an Irem game.

ShouTime dumped Mahjong Block Jongbou 2, a sequel to the original game which featured a unique blend of Arkanoid and Mahjong

This sequel was designed for cocktail tables and features vs. mode game gameplay, with one paddle at the top, and the other at the bottom.

TH Strikes Back has a hidden / unused 'Thunder Hoop 2' title screen in the ROM that can be enabled with a small patch.

Osso has been looking into the emulation of the recently dumped "Mario Undoukai" in MAME, a redemption game from Banpresto, licensed by Nintendo, running on Seibu hardware. It currently needs a hack on the Card Pay status to boot and isn't yet properly playable.

Capcom's Dokaben 2 has been added to MAME thanks to ShouTime and Team Japump. This is a sequel to Dokaben and was released later in the same year, it has new images / cutscenes / story. It's all in Japanese so I don't know how to play it.