Line Rider 2: Unbound for the Nintendo Wii is a puzzle-platformer game that expands upon the web-based original. The objective is to draw lines to create slopes and tracks for a character on a sled to navigate through various levels, overcoming obstacles and reaching designated points. It features a robust physics engine and adds new gameplay elements such as different types of lines and scenery. The game combines creative problem-solving with sandbox-style play, allowing for both predetermined puzzles and open-ended track design.