Matt Craig, Forbes Staff

In the battle royale of video game development, the gaming giant behind Fortnite is betting that crowdsourcing will lead to its next blockbuster title. And in just six months, the new program has turned a handful of amateur developers into millionaires.

With $1 billion in sales and a stable of players that includes No. 1-ranked Iga Swiatek and young American star Ben Shelton, the surging Swiss running shoe company wants to become a tennis powerhouse. But first, they need a sneaker.