SimEarth: The Living Planet is a comprehensive planet simulation game that allows players to manage and create worlds. Available on Mac, this full-version simulator offers two distinct modes: game mode, where players develop and sustain their planets within energy constraints, and experimental mode, which provides unlimited energy to freely experiment with planetary development. The game features a variety of planets to explore or create from scratch, treating the entire ecosystem as an interconnected entity. Players can manipulate climate, atmosphere, and geological features, observing how all elements interact.

Inhabitants of your created worlds are known as SimEarthlings, ranging from simple single-celled organisms to complex intelligent species, including unique forms like intelligent dinosaurs or insects. This adds a layer of depth as players must ensure the survival and well-being of their electronic life-forms. SimEarth combines educational aspects with engaging gameplay, making it a versatile tool for both learning and entertainment.