Experincing Virtual Reality

When I went to the Science Expo at UNC campus, there was a virtual reality game that I got to do! What you do is you put on these goggles and headphones, then there is a voice that tells you what to do. You pick up these balls and put them in targets to go on with the level. When you look up, down, left, right, it looks like you're in a completely different room. There is also a part where it looks like you're about to fall off a really big ledge but you can walk on the air. When other people weren't doing it, they could look at 2 computers that showed the game I was playing. One screen was for my left eye, and the other was for my right eye. I did that 3 times and every time felt really cool!