It was for the GBC/GBO... So it is only the original run of cards... Original Pokémon. Probably only a few hours long if you hardcore it and get lucky with the cards in the booster packs etc. Hitmonchan is amazing. 70 HP, 20 damage for 1 energy and 40 for 3. Psychic decks are pretty rare too so you don't have to worry so much about getting bashed for double damage that often.