Pokémon Crystal is the enhanced remake to Pokémon Gold and Silver. This makes it part of the second-generation of Pokémon games. It featured the Battle Tower, and also focused on the Pokémon Suicune (featured on the game's boxart). A remake of the Gold and Silver games was released in Japan in September 12, 2009 for the Nintendo DS and in March 14, 2010, known as Pokémon HeartGold and SoulSilver.