How I Built This with Guy Raz

Riot Games: Brandon Beck and Marc Merrill

At USC in the late 1990s, Marc Merrill and Brandon Beck were bonding over video games and noticing that free, player-made modifications for the game Warcraft III were becoming wildly popular online. The two friends were so impressed by these mods that they decided to create their own multiplayer strategy game with an unusual twist: they'd offer the game…