Danball Senki W, also known as Little Battler Wars, is a popular Japanese video game developed by Level-5. The game was released in 2011 for the Nintendo DS and later for the PlayStation Portable (PSP). It is a sequel to the original Danball Senki, which was released in 2007. The game is known for its unique blend of strategy, action, and role-playing elements, making it a favorite among gamers.