OCG is an abbreviation for "Original Card Game", a slang term given for the game format played in Japan and other Asian countries as opposed to the TCG .
Details
The OCG currently contains 39 DM booster packs, 68 DMC packs, 20 DMD decks, 15 DMR booster packs, 5 DMS (Starter Decks) packs, 17 DMX packs and 13 years of promotional cards.
- See here: List of Duel Masters OCG Sets