The simpler roots of designs in Generation I prompted greater complexity in later games. Designs, in general, have become increasingly complex and thematic in newer games. Sneasel, for example, draws inspiration from the Japanese yōkai kamaitachi, mythical creatures with fast, razor-sharp claws that hunt in packs. These elements are all found in Sneasel's design and characteristics. New Pokémon introduced in Generation VI, for example, are heavily influenced by the culture and fauna of Europe (namely France). However, by the release of "X" and "Y" in 2013, Sugimori stated he wishes for Pokémon design to return to the simpler roots of the franchise.