https://www.gamespot.com/articles/pokemon-ultra-sun-and-moon-every-free-pokemon-avai/1100-6456217/

Pokemon Ultra Sun and Ultra Moon launched for 3DS back in November, marking the mainline series' swan song on Nintendo's dual-screen handheld. As it did for the original Sun and Moon versions, The Pokemon Company is continuing to support the pair in the months following their release with free items and Pokemon. The company has a lot of giveaways lined up for 2018, which it has dubbed the Year of Legendary Pokemon, though those certainly won't be the only freebies players can expect to find this year.

We've rounded up all of the free distributions currently running for Pokemon Ultra Sun and Ultra Moon below, many of which are also open to Sun and Moon players. We'll be updating this list as more giveaways are announced, so check back often to see what free items and Pokemon you can get. In the meantime, you can learn more about the latest Pokemon games in our rundown of everything new in Pokemon Ultra Sun And Ultra Moon. We also break down the differences between Ultra Sun and Ultra Moon, if you're still unsure of which version to pick up.