Games books

I'm finding some games books that look not only interesting, but very practical. I haven't read any of these yet, but hope to do a lot of work on games later this summer (after my vacation!). The titles are:

• Game On: Energize your Business with Social Media Games


• Games-Based Marketing


• The Gamification Handbook


• Game Frame: Using Games as a Strategy for Success


• Reality is Broken: Why Games Make Us Better and How They Can Change the World


• Total Engagement: Using Games and Virtual Worlds to Change the Way People Work and Businesses Compete