Official site of the free MMO building game for kids. News, contests, forums, parent’s section, and merchandise. ROBLOX is the best place to Imagine with Friends™. With the largest user-generated online gaming platform, and over 15 million games created by users, ROBLOX is the #1 gaming site for kids and teens (comScore). Every day, virtual explorers come to ROBLOX to create adventures, play games, role play, and learn with their friends in a family-friendly, immersive, 3D environment.