2013 Ready Player One
In a not so distant future, resources are scarce and life for most is pretty grim. People around the world plug into the OASIS, an open source virtual reality, to live, learn, and play.
When the creator of the OASIS dies, it is revealed that he has hidden three keys throughout the OASIS and the person to find them all will win millions of dollars and own controlling stake in the company.
Five years after the creator’s death, the protagonist Wade discovers the first key, which launches an international quest to find the others and own the OASIS.