By Lisa Richwine LOS ANGELES (Reuters) - Virtual reality has yet to take off with the bulk of video gamers, but the industry is doubling down on its bet that one day it will. At the annual E3 video game showcase in Los Angeles this week, attendees strapped on VR headsets to peer into fantasy worlds, battle robotic creatures and command starships. Meanwhile, game publishers announced investments that showed they believe VR is ready to go mainstream.



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