Holodecks, anyone?

Remember the Holodeck from Star Trek: The Next Generation? It was a big gridded room that became whatever the participants wanted, somehow letting everyone walk or run willy-nilly into a virtual space without running into the confines of the room itself. Many have tried to solve this issue with our 20-21st century technology. There's the awkward gyroscope of the early-1990s solution:

Or more practically, some military VR simulators out there use treadmills, but those are confined to one direction.

Not anymore! A Michigan-based company has been developing an omni-directional platform. At last!