Which two games began the ninth generation of the main Pokémon video-game series?

Pokémon Scarlet and Violet began the ninth generation of the main Pokémon video-game series.

The pair was released worldwide for Nintendo Switch on November 18, 2022. The games take place in the Paldea region, which draws inspiration from the Iberian Peninsula and introduces new characters, Pokémon, and storylines.

Scarlet and Violet feature an open world with urban areas and wilderness connected without the traditional separation between routes. They also offer three major story paths that players can pursue in a flexible order.

The games introduced the Terastal phenomenon, which changes a Pokémon's appearance and can alter its battle type. They are sometimes confused with Pokémon Legends: Arceus, another Switch title, but Scarlet and Violet are the numbered-generation pair that launched Generation IX.