This comprehensive tutorial guides readers through building a full-stack web application using Python, Flask, and CockroachDB, focusing on creating a game leaderboard. By leveraging Flask's lightweight framework and Jinja2 for templating, the application allows users to view and add leaderboard entries. The tutorial details setting up a CockroachDB Serverless account and using SQLAlchemy for database manipulation, emphasizing the ORM's ability to maintain an object-oriented programming paradigm. It discusses deploying the app on Heroku, including setting up a WSGI server with Gunicorn and managing environment variables. The guide concludes by highlighting the benefits of using CockroachDB in modern development stacks, noting its compatibility with PostgreSQL tools and its straightforward integration with SQLAlchemy, making it an attractive choice for developers familiar with these technologies.