The definition of what actually constitutes a game—and whether Roblox specifically hosts user-created games—has been surprisingly important in the Epic Games v. Apple trial this month.

Platforms like Fortnite and Roblox are part of a future led by user-made experiences, which could turn game development into something akin to Youtube.

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 ...

Roblox is testing a tool that could accelerate the process of building and altering in-game objects by getting artificial intelligence to write the code.