Release of Linux Pratique Special Issue No. 25 of November/December 2012 on HTML5 game development!
On the programme: theory, technique, and practice including the creation of two complete games.
One of these games, based on an isometric map, is playable online on this site and the sources are made available under a free licence.
For more details, you will find a more complete presentation article.
Here is the link to the magazine on the publisher's site. You can browse through it.