Janus VR is not a game, but I felt compelled to mention it because it will BLOW YOUR MIND. This free program renders the entirety of the Internet--in 3D. That's right. You can literally walk the halls of Reddit. JanusVR turns webpages into boxy rooms with pictures and text hanging from the walls, and with links portrayed as portals that you can walk through. This program processes its own version of HTML, meaning that you can program your own 3D rooms in HTML. A man named Lee Nolan hosts Janus rooms as subdomains of vrsites.com, with an in-browser HTML editor for you to program them in, for free. All you have to do is create an account! As for regular, 2D websites, JanusVR renders them in 3D on the fly! This system is flawed, and most websites just look like a bunch of portals, but JanusVR has special support for certain websites like reddit and Flickr, which means those sites render in a predetermined way. Furthermore, JanusVR has Oculus Rift support, as well as real-time multiplayer with text chat and Mumble voice chat! In this way, JanusVR is almost like the Internet transformed into an open world exploration game! This program will change the way you view the Internet, and you can get it for free here!