Here are some ways to get Porygon in other Pokemon games:
* Pokémon Red, Blue, and Yellow: You can catch Porygon in the Safari Zone.
* Pokémon Gold, Silver, and Crystal: You can catch Porygon in the Ilex Forest.
* Pokémon Ruby, Sapphire, and Emerald: You can catch Porygon in the Safari Zone.
* Pokémon FireRed and LeafGreen: You can catch Porygon in the Safari Zone.
* Pokémon Diamond and Pearl: Porygon is not available in these games.
* Pokémon Platinum: You can obtain Porygon by trading.
* Pokémon Black and White: You can obtain Porygon by trading.
* Pokémon Black 2 and White 2: You can obtain Porygon by trading.
* Pokémon X and Y: You can obtain Porygon by trading.
* Pokémon Omega Ruby and Alpha Sapphire: You can obtain Porygon by trading.
* Pokémon Sun and Moon: You can obtain Porygon by trading.
* Pokémon Ultra Sun and Ultra Moon: You can obtain Porygon by trading.
* Pokémon Let's Go, Pikachu! and Let's Go, Eevee!: You can obtain Porygon by trading.
* Pokémon Sword and Shield: You can obtain Porygon by trading.
* Pokémon Brilliant Diamond and Shining Pearl: You can obtain Porygon by trading.
* Pokémon Legends: Arceus: You can obtain Porygon by trading.
* Pokémon Scarlet and Violet: You can obtain Porygon by trading.
If you want to get Porygon in Pokémon Pearl, you'll need to trade with someone who has one.