1 Decide which Legendary Pokémon you want to get. If you install the Ruby version of the game, your first Legendary Pokémon will be Groudon. If you install the Sapphire version of the game, Kyogre is your first Legendary Pokémon. If you install the Emerald version of the game, your first Legendary Pokémon will be Rayquaza. (Note: In Pokémon Emerald, Rayquaza may not be your first Legendary Pokémon, as Rayquaza is not in the same locations as Groudon and Kyogre. Rayquaza Pokémon (when the sun is hot and it rains heavily) stops the two fighting.

2 You can choose by color. If red is your favorite color, go for Ruby. If your favorite color is blue, go for the Sapphire version. If green is your favorite color, choose Emerald. If you do not like any of these colors, still choose the color you like the most from these three. For example, if your least favorite color is red, don't choose the Ruby version, and so on.

3 Think about the Pokémon you see. In all these versions, different types of Pokémon appear in the world, which you will catch. For example, in the Ruby version of the game, you can find the Pokémon Seedot. In the Saphire and Emerald version of the game, you can find the Lotad Pokemon (These are the versions of the Hoenn game)

4 Think about champions. The champions in all these versions are different. In the Ruby and Saphire versions, your champion is Steven (Steven will fight you all over the Hoenn map). In the Emerald version of the game, Wallace is your champion. Just like in the last battle with the coach of the sports club. In the final battle with the trainer in the Ruby and Saphire versions of the game, Wallace will also be your opponent. In the Emerald version, your opponent here is Juan. Juan is stronger than Wallace. They use the same Pokémon class, Ice and Water, but Juan has higher tier Pokémon).

5 Make sure you want to play this version of the game. It doesn't matter if you read in the magazine that one of the versions is not interesting. All people have different ideas about an interesting pastime. You've probably played a game that didn't have such good ratings, and you liked it?

6 Choose the harder version if you're interested. Emerald is harder to play than Ruby and Saphire. (Rayquaza level 70, Groudon and Kyogre level 50, see the difference?)