ROM Studio

DOC ROM Studio

World Edition (Rev C / Rev R) · Export (Rev D) · Japan (DOC 2000 / DOC '99)

No ROM loaded.

Drag a DOC program ROM (.ic22) or your game's ROM .zip here, or click Load.
Load the .zip and you can build a complete ready-to-play .zip back (mask ROMs kept) — drop it in your game folder and play.
Auto-detects World Edition epr-22336c/r, Export epr-22336d, DOC 2000 epr-22284a, or DOC '99 epr-22099b.
Editing is byte-exact and keeps the file at exactly 4,194,304 bytes. Japanese text is read/written as EUC-JP.

Sire breeding stock: name + externals + composite (ac). Aptitude symbols: ✕ 1-4 · △ 5-8 · ○ 9-12 · ◎ 13-16.

Dam breeding stock: name + externals + composite (ac). Aptitude symbols: ✕ 1-4 · △ 5-8 · ○ 9-12 · ◎ 13-16.

G1 race names. Keep each name within its original byte length (shown).

All course strings across the 4 in-game tables. Each shows its byte budget.

Translation is optional. It fills the English column for your reference only and is never written to the ROM. Your API key stays in your browser and is sent only to the provider you choose — never to this website. No key? Use the offline Copy / Download bilingual table buttons instead. (DeepL may be blocked by your browser's CORS; Claude and Google generally work.)

offsetJapanese (ROM text — editable)romajiEnglish (your reference)bytes