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 creating a new generation of game developers, but it needs to make sure it can hold on to them past their early teen years.

Roblox sees its Game Fund as a way to support impressive, visually exciting games that mostly don’t look or even work like what the platform is known for.