Love this little guy. a fun gift for a long time mario fan. high quality, very durable, the figure is well detailed and a nice decoration as well. works with nintendo wii U, new nintendo 3ds and the 3ds amiibo adapter that i forget the name of. the effect it has on the game varies per game. the box on the game will tell you if it has amiibo compatibility and you can google what character does what if it doesn't say.