Halo 2 - Cut Campaign Mission Moonbase - Halo 2 would have indeed been MASSIVE had the creators gotten another year of development. Mission 1 – EXPLORATION A barren moon conceals a Forerunner sensor array. Exploration was a draft single-player level that served as a testbed for many of the gameplay features used in retail Cairo Station (such as low gravity, airlocks, and moving level geometry). The level would have also featured a rather intricate gameplay mechanic of restoring power to the Fore