More than half of the children in the United States play video games on Roblox. In fact, the massively popular gaming platform has grown so much during the coronavirus pandemic, the company's valuation has skyrocketed from $4 billion in early 2020 to $30 billion in early 2021.

What makes Roblox so popular? It's a social gaming platform where users can play a library of games and hang out and chat with their friends. There are games for all ages and tastes ? games where you raise a virtual pet, operate a pizzeria with friends or run amok in an open-world take on cops-and-robbers. Here's a look at Roblox's business model, why investors are excited about the platform, and the company's plans to go public in 2021.

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