In just under two months, a Roblox user-created game called Grow a Garden has become a massive hit.

Sony Pictures is teaming up with Gamefan on a Karate Kid: Legends Roblox game to market to movie to younger generations.

From creating virtual experiences to selling tickets within games and social media, Hollywood is trying to capture the attention of young fans in places they frequent.

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.