Sonic Lost World

is a 2013 platform game developed by Sonic Team. It is part of the Sonic the Hedgehog series, and was released in October 2013 for the Wii U and Nintendo 3DS in PAL regions by Nintendo and by Sega in North America and Japan. A port of the Wii U version for Windows was later released in November 2015. Lost World focuses on the efforts of Sonic the Hedgehog to stop the Deadly Six, an alien tribe that serves as the game's main antagonists, as they seek to siphon the world's energy from the Lost Hex, the game's setting. Sonic and his long-time sidekick Tails must team up with Doctor Eggman, normally their enemy, to stop the Deadly Six, leading to conflicts among the three parties. While the gameplay is typical of the Sonic series in some ways, it adds parkour mechanics and features largely cylindrical level design with an emphasis on alternate pathways. The game also features the Wisp creatures from Sonic Colors as power-ups. The game began development shortly after the 2010 release of Sonic Colors. It was designed to be streamlined and fluid in movement and design, using tube-like level design and a simple, bright color scheme. The game received mixed reviews upon release; its controls and the Deadly Six were frequently criticized, but its visuals and audio were seen positively. Downloadable content was released both alongside and after the game's release, adding features such as additional levels and a new type of Wisp power. Gameplay Sonic Lost World is a platform game with action-adventure elements, in which the player controls Sonic the Hedgehog as he travels across the Lost Hex in order to rescue captured animals and stop the Deadly Six. Levels range from side-scrolling 2D levels to fast-moving 3D linear levels to levels taking place on spherical worlds similar to the canceled Sonic X-treme and the Super Mario Galaxy series. This also translates to the 3DS version, as it was the first handheld game in the series presented entirely in 3D.