Even as a Linux (Mint 17.3) user, I'm not even sure if I'd buy Strafe when it comes to Linux.
From what I've seen, Strafe is milking the "retro" gaming cliche's and "randomly generated" cliche's I've grown very tired of. 1990s FPSes didn't require randomly generated levels. We still play Doom and Quake 20 years later because their levels were just very well designed to begin with. I'm also growing weary of "retro" games that require dual core CPUs and 1GB graphics. If these games look like they're ripped from the 1990s, then why do they require post 2012 hardware? Strafe, like alotta indie games of late, looks like another bull___ cash grab.