Janzen Madsen is a 25-year-old game designer from New Zealand. Madsen creates new games on Roblox and updates his previous games to keep up a revenue stream. He made nearly $40,000 in his first year ...

SAN FRANCISCO—At the Game Developers Conference Monday, Roblox rolled out a new set of AI tools designed to let the company's millions of player-creators create usable game code and in-game 2D ...