* Pokémon TCG Online: This free-to-play online game allows you to play against other players using digital versions of real Pokémon TCG cards. You can download it from the official website: [https://www.pokemon.com/us/pokemon-tcg-online/](https://www.pokemon.com/us/pokemon-tcg-online/)
* Pokémon TCG Live: This is a newer online game that is replacing Pokémon TCG Online. It's also free-to-play and offers a more modern experience. You can download it from the official website: [https://www.pokemon.com/us/pokemon-tcg-live/](https://www.pokemon.com/us/pokemon-tcg-live/)
* Mobile apps: There are several mobile apps that allow you to learn about the Pokémon TCG, like the Pokémon TCG Trainer Website app. These apps aren't for playing the game itself, but rather for helping you understand the rules and card mechanics.
If you are looking to purchase physical Pokémon Trading Card Game cards, you can find them at most game stores, online retailers, and even some supermarkets.