elude visibility
BS-X, Prototype, Unreleased & Other Unique ROMs
Super Chinese 2 - Dragon Kid (Japan) (Sample)
- - Matthew Callis

スーパーチャイニーズ2 ドラゴンキッド

Super Chinese 2 - Dragon Kid (Japan) (Sample)

Rainbow Islands - The Story of Bubble Bobble 2 (Japan) (Sample)
- - Matthew Callis

レインボーアイランド

Rainbow Islands - The Story of Bubble Bobble 2 (Japan) (Sample)

The first obvious difference is the SAMPLE VERSION label on the title screen. More importantly discovered by XKeeper the game has a demo that neither the Japanese nor the US versions have.

Columbus - Ougon no Yoake (Japan) (Sample)
- - Matthew Callis

コロンブス ~黄金の夜明け~

Columbus - Ougon no Yoake (Japan) (Sample)

J.League Excite Stage '95 (Japan) (Prototype)
- - Matthew Callis

Jリーグエキサイトステージ’95

J.League Excite Stage '95 (Japan) (Prototype) J.League Excite Stage '95 (Japan) (Prototype)

Write up at SNESCentral.

FMC Disk Card Checker Ver 1.3 (Japan)
- - Matthew Callis

FMC カードチェッカー

FMC Card Checker was provided by Nintendo to game shops that used the Nintendo Disk Writer system to verify that disks written are valid or not. Nintendo Disk Writer allowed shows to sell rewritable disks for only only 500, about $5 USD.

I’ve also seen the ROM named FMC Disk Card Checker Ver 1.3 (Japan) (v1.2) (Developer Card).

FMC Disk Card Checker Ver 1.3 (Japan) FMC Disk Card Checker Ver 1.3 (Japan) FMC Disk Card Checker Ver 1.3 (Japan) FMC Disk Card Checker Ver 1.3 (Japan) FMC Disk Card Checker Ver 1.3 (Japan)

FMC Disk Card Checker Disk