Like YouTube, Roblox started as an online stage for young creators. As the company grows toward 100 million active daily users, contributors are making big money selling games.

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.

Whether it serves as a chill escape from the onslaught of the real world or simply a way to beat vacation doldrums, a viral ...