As fun as it is to step into the shoes of a video game RPG hero for a few hours, imagine how it would be to live your whole life, day in and day out, under the in-game rules and systems. Some of the differences would be pretty inconvenient, such as a mysterious force preventing you from ever going anywhere with more than three friends at a time. Others would be a definite plus, though, such as working hard at your job periodically making you not only more intelligent, but stronger, faster, and luckier, too.
But perhaps the weirdest change would be knowing that anytime you left your neighborhood and wanted to go from Point A to Point B, there was a chance of monsters randomly appearing, like two Japanese businessmen thought was happening to them when they spotted what looked like a Dragon Quest slime car on the expressway.