At Gamescom, Maxis's Jordan Edelstein spoke about Sim City's development, detailing Sim City World, the community focused multiplayer half of the city-builder. Sim City World will allow players to collaborate, sharing resources and population across a network of connected, online cities. Edelstein also revealed that Sim City will be available on Mac (as will the Origin service itself). Sim City beta sign-ups have started today too, ahead of the game's launch in February 2013. The site's just crashed, naturally. Why not frantically refresh it, to inspire it back to life?