Neo Discovery

Neo Discovery, released in June 2001, is the ninth set of 75 cards in the Pokémon Trading Card Game. Its symbol is a Mayan temple. While the architectural structure of the ruins is ambiguous in the video games Pokémon Gold, Silver, and Crystal, in Pokémon 3: The Movie, they seem to be of Central or South American origin. Neo Discovery premieres many second-generation Pokémon into the card game, such as Smeargle, Politoed, and Wobbuffet. In a way, this makes it a counterpart to the Jungle set (which introduced another third of the original 150 Pokémon).

The Unown are a Pokémon themed on the English alphabet. At the time of Neo Discovery's release, there were 26 types, one for each letter. (Later, Unown ? and Unown ! would be introduced, bringing the total to 28.) Neo Discovery introduced nine of these Pokémon into the card game. Each could affect the game in different ways related to a word starting with the letter the Unown represents. Unown "O" is associated with the word observe, and this application in the card game is done through "observing" the opponent's deck.