Video games have evolved significantly since the first game in the 1950s. They were initially seen as only for teenagers and nerds but are now a $74 billion industry and part of mainstream culture. Virtual worlds allow people to take on new roles and identities and interact in online communities. While some negative effects like game addiction have been seen, games may also provide cognitive benefits and teach new skills when used for education. As technology continues to advance, the line between virtual and real worlds will likely become more blurred.