Where to catch rare Pokemon on the red game?

You can't catch rare Pokemon in Pokemon Red. The Pokemon Red game is an older game with a limited Pokedex and does not feature any Pokemon that are considered "rare" in the modern sense.

However, there are some Pokemon that are more difficult to find in Pokemon Red due to their location or level requirements. Here are some examples:

* Mewtwo: This legendary Pokemon can only be found in the Cerulean Cave, but you need to complete the entire game and have a high enough level to catch it.

* Zapdos, Articuno, Moltres: These legendary birds are all located in the Power Plant, Seafoam Islands, and Victory Road, respectively. They are all relatively high-level Pokemon and can be difficult to catch.

* Snorlax: Snorlax is found in the Victory Road, but it can be difficult to catch due to its high level and its tendency to sleep.

While these Pokemon are more difficult to find, they aren't technically "rare" in the sense that they are present in the game and can be captured.

To find specific Pokemon, you can use the Pokedex in your game to see where each Pokemon is located. You can also use online resources such as Bulbapedia or Serebii to find more detailed information about each Pokemon, including their location, level, and rarity.