We introduce O2ARC 3.0 interface for the Abstraction and Reasoning Corpus (ARC). O2ARC 3.0 gamifies the experience, fostering user engagement through competitive features and community-driven problem creation and evaluation. Built with a React frontend and NestJS backend, the platform provides a responsive and intuitive interface for efficient rule inference. This approach not only improves data collection for AI training but also enhances the problem-solving process, offering a scalable solution for advancing cognitive AI research. O2ARC is available at https://o2arc.com.