Gotcha!

Both are really good for Pokémon fans, fanservice is 10/10 

Both titles are: - Directed by Rie Matsumoto - Sung by Bump of Chicken - Made by Studio Bones - Amazing, you have to see both of these! 

Both are excellent music videos with stunning visuals and amazing and memorable songs. Also both will give you lots of mixed feelings (sadness in Shelter and nostalgia and happiness in Gotcha) 

If you need a short reason to fall in love with anime and animation again, then I can recommend these two. Their biggest similarities are, that they're rather short, have some rather nice music and that they celebrate their respective thing. The Daicon Opening Animations are two short OVAs...that are just giant celebrations of anime and animation and everything related to that. Especially the second one just is filled with love for the medium and with so many references. Plus, if you're into oldschool animation, then this one is definitely something you have to check out. Gotcha! is more of a music video...but one, that celebrates the Pokemon franchise, from the first generations from way back to the games on the Switch and everything between those two. Add an amazing song, some pretty good modern animation and just a love for the franchise coming from every frame and you have a pretty amazing music video. read more 

Easily the most stunning of all Pokémon music videos, this one uses the absolutely insane animation talent and infinite budget for the series to do some absolutely astounding bits of animation and cinematography. A must see, especially for those with huge nostalgia for the game series. 

Pokemon themed music videos that aim to bring closer the feel of the game. 

Both of these are short promotional videos/music videos that encapsulate the hype of their respective franchises, shows fan favourite characters and overall builds to pleasant experience if you're a fan of said franchise, but wouldn't be much interesting to watchers that aren't fans. 

Promotional music videos made for a game franchise that aims to cause an emotional response from the audience by a more sentimental/drama narration. 

Both are basically compilations of moments from their franchises set to a music, to create something that looks cool.