HTC Vive. Not necessarily this specific tech itself, but VR gaming more broadly. My friend and I were ginning ourselves up for years before it came out. I dropped a lot of money on a gaming rig for it. And when I put the googles on… I fucking hated it. I didn’t like standing and gaming. I didn’t like being so isolated from everyone else in the house. And the games were glorified tech demos slapped together with unity assets. By the time Half Life Alex came out, I had no more fucks to give.