Explore a comprehensive conference talk on developing a successful cross-platform HTML5 game, from concept to launch. Discover how the math game Quento was created and distributed across multiple platforms using HTML5. Learn about framework selection, cross-platform development challenges, leveraging mobile constraints, concept validation, marketing strategies, and post-launch support. Gain insights into sales data across different app stores and understand the entire development process. Benefit from the speaker's experience in creating a widely-used educational game that received positive media reviews and found success in schools worldwide.