Gamers using the pseudonyms "Nyhrox" and "Aqua" became the first Fortnite world champions in the duo division in New York City on Saturday, winning $1.5 million (Dh5.5m) each.
Competitors gatheredto determine who is top dog at the battle-royale game, which has become an international phenomenon since launching in 2017.
The pair won games four and five out of a total of six in the first-ever Fortnite World Cup Finals, and finished with the most points.
"I don't know what to say. It's crazy," both of the young competitors said, one after the other.
In the game, users are dropped on to an island where they must search for weapons and other resources while eliminating other players, all while trying to stay alive.
There are two divisions at the tournament, solo and duo.
With 51 points, Nyhrox and Aqua beat runners-up Rojo and Wolfiez, who scored 47 points and also became millionaires, earning $1.125m each.
Fortnite did not release any of the players' real names or ages. The game is wildly popular with teenage boys.
Epic Games, Fortnite's creators, spent $100m on the inaugural event, including staging 10 weeks of qualifying culminating in this weekend's tournament.
Every competitor is guaranteed to leave the competition, held at Arthur Ashe Stadium, which also hosts the US Open tennis, with $50,000. Fortnite, which is free to play, has 250 million users worldwide.
