Halo: Reach is now playable on PC... for a handful of very early adopters. Microsoft and 343 Industries have shared a slew of Master Chief Collection update news, including word that it has started a public test of Reach on Windows PCs that lasts through July 1st. Don't get your hopes up for joining in this round, though. There are less than 1,000 Halo Insiders involved, and they're playing just one campaign mission. The developers plan to invite more people "over time," though, so you can consider this the start of a much larger test experience.