Rainbow Six Siege was originally a tricky proposition. Between Battlefield, Call of Duty, and Counter-Strike, back in 2015, it felt like online shooters were driven more by outright aggression and pace than by tactics and teamwork. Ubisoft was trying to take the mechanics of slow-burn, single-player FPS classics like SWAT 4, Ghost Recon, and of course the R6 series itself, and make them work in competitive multiplayer. It wasn’t easy, but nine years and dozens of seasons later, the studio has clearly made Siege’s mix of brains and brawn into a success. XDefiant might be closing down, but with Year 9 Season 4 and Operation Collision Point underway, Rainbow Six Siege is as strong as ever, and now you can play it for the low, low price of zero dollars. Continue reading Rainbow Six Siege is completely free to play right now, but you need to act fast MORE FROM PCGAMESN: Best FPS games, Best Rainbow Six Siege operators, Play Rainbow Six Siege