However, there are a few ways to obtain Riolu in Unova games:
* Trading: You can trade for a Riolu from someone who owns one. This is the most common way to obtain Riolu in Unova.
* Event Distributions: Occasionally, Nintendo will distribute special event Pokémon, including Riolu, through various means. This is not guaranteed, but you can keep an eye out for any announcements.
* Breeding: If you already have a Riolu, you can breed it with another Pokémon to produce more Riolu.
Important Note: The information above refers to the main series Pokémon games. If you are playing a different type of game, such as a fan-made ROM hack, the availability of Riolu may differ.