Sonic Rush is the first Sonic the Hedgehog game for the Nintendo DS. It was developed by Dimps, and published by Sega. The game was released worldwide in November, 2005.
Sonic Rush is a traditional 2D platform game much like the original 8/16-bit versions and Game Boy Advance titles in the series. However, graphics of the main characters as well as the bosses are fully polygonal, as opposed to sprites as all 2D Sonic games had previously used. Stages are of the 2D side-scrolling variety, much like the Sonic Advance games. The two DS screens are used to double the display of the play area, joined seamlessly at the bottom of the top screen and top of the bottom screen. The characters will generally be displayed in the center of one screen, only to run, fall or jump into the other screen, making full use of both screens. A 3D perspective is used during boss battles.
The DS stylus touch-screen functionality is mostly used in the game's special stages, and can also be used for making selections within the game's menus. The game was followed by a sequel, Sonic Rush Adventure.