caterpie:

The Pokémon Gold and Silver SpaceWorld Demo was an extremely early and vastly different version of the Generation II games, sought after by hardcore Pokémon enthusiasts for years. It was shown off only once to a small amount of consumers in late 1997, and was never seen again… until today. Now, 20 years later, that same demo has been leaked to the internet and is fully playable!

nintendo:

Throw a Poké Ball in the Super Smash Bros. Ultimate game and you might get an Alolan Raichu from Pokémon Ultra Sun and Pokémon Ultra Moon! It surfs around the stage on its tail and rushes you! It’s pretty quick and can travel anywhere on the stage so watch out!