SpatialOS
SpatialOS is a Virtual Reality platform that enables developers to connect multiple servers and game engines like Unreal and Unity. With SpatialOS, you can power massive, persistent worlds with more players than ever before for games and real world applications. The platform coordinates a swarm of micro-services called workers, which overlap and dynamically reorganize to power a huge, seamless world. The platform also lets you handle a huge number of concurrent players across different devices in one world.