Ion is an emergent narrative massively-multiplayer online game in which players build, live and inevitably die in huge floating galactic constructions, tracing humanity’s first deadly steps towards colonizing the universe. Thanks to technology from Improbable, Ion is a massive interconnected universe with fully simulated real-time environments, including air pressure, heat and cold, power grids and much more, which all must be carefully balanced to keep the unending vacuum of space at bay.