Page "Tux Racer" Paragraph 2

Points are also scored by collecting herring that are scattered along the various courses.

In order to progress to the next level of the game you have to both collect sufficient herring and reach the end of the course within a preset time limit.

Like many open-source games, the replay value of Tux Racer is extended by easy modification of the game.

New maps can be created by making three raster images to indicate height, surface, and object placement.