Line Rider 2: Unbound for Nintendo DS is a puzzle-platformer game that builds on the original web-based Line Rider experience. Players design and draw intricate tracks with a stylus, creating ramps, loops, and jumps for a character on a sled to navigate. The goal is to safely reach the finish line while overcoming various obstacles and challenges. This version includes new modes, such as Puzzle and Story, adds colorful graphics, and enhances gameplay with collectibles and unlockables. The game's unique blend of creative design and physics-based puzzling makes it an engaging title for players who enjoy interactive and imaginative gameplay.