Sonic Sunburst is a classic-style Sonic fan game set on Little Planet. Eggman's new plan centers on Little Planet reaching its closest point to the Sun, giving him the perfect opportunity to use it as the launch point for a massive Dyson sphere. Sonic has only minutes to stop the activation sequence before the entire Solar System is thrown into permanent eclipse.

Sonic's journey across Little Planet puts speed, momentum, and quick decision-making at the center of the experience, with time travel and new abilities giving him more ways to push forward.