Normally, each chapter ends with a summary heading; anyway, this time I don't think you need a summary. I mean, you made several games, from a Concentration to Sokoban, from an endless runner to Globez.

First, I want to thank you for reading the entire book, and I hope you enjoyed reading it as much as I enjoyed writing it.

Although you created several games, this is just the beginning of a long journey into cross-platform game development.

First, you should complete the game by adding sounds, a scoring system, and some other features I am sure you know how to add, now that you are reading these final pages.

Then, I just want to point you to three sites you may find useful if you want to dive into cross-platform HTML5 development.