"Apollo Eagle" is a simulation that focuses on the final twelve minutes of the Lunar Module "Eagle" landing during Apollo 11. The simulation, known as the "Powered Descent," challenges players to manage throttle and pitch to achieve a safe vertical landing. Fuel consumption affects the spacecraft's mass, requiring players to adjust settings accordingly.

Throughout the descent, players must maintain altitude and forward rates below 10 feet per second, using throttle and pitch controls effectively. The simulation offers features like time slider for rewinding, pausing, and a landing information button for guidance. Players can choose between practice and full landing modes, with the option to resume previous attempts. The accelerometer enables changing viewpoints within the simulation environment.