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Not long ago, "3D game in a browser" meant a blocky mess running at ten frames a second, or a plugin install that half the computers on a school network wouldn't allow anyway. That's not really true anymore. A tab can now render actual depth, lighting, and movement in real time, with nothing to install and nothing to approve.
The short version is WebGL, a browser API that lets JavaScript hand instructions straight to your graphics card instead of fighting through a plugin layer first. Flash handled 2D well enough in its day, but it was never built for real 3D, and when it was retired in 2020 the games that replaced it leaned on WebGL instead. Our own short history of browser games covers that handoff in more detail if you want the fuller timeline. The practical result for a player is simpler: the browser you already have open can now do things that used to need a dedicated game client.
A first-person survival shooter with no level to clear, just a horde that keeps coming and gets worse the longer you last. There's no map download, no texture pack, no "please wait while assets load" screen that drags on for a minute. You open the tab and you're already looking down the sights.
Space combat and dodging, which is about the least forgiving genre there is for a laggy renderer. Reading an incoming shot a frame late is the difference between dodging it and eating it, so this one leans hard on WebGL actually keeping up. It does.
You're being chased by something enormous and the only real strategy is staying ahead of it while grabbing powerups along the way. It's a simpler concept than the other two, but it's a good showcase for how much distance and scale a browser can now render convincingly, which is exactly what a giant chasing object needs to feel threatening instead of silly.
None of this is about graphics for their own sake. It's about access. A kid on a school Chromebook, someone on a work laptop with locked-down admin rights, a person who just doesn't want to hand a game install access to their whole system, all three can open the same tab and get the same experience. For a deeper look at the genre words this whole scene runs on, the gaming terms glossary breaks down what WebGL, horde mode, and the rest actually mean, using these exact games.
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