I've been participating in the 3dgamelab Teacher Camps since last summer and LOVE them. The quests are great and expose educators to great tools for teaching in addition to the idea of using quest based learning to gamify your curriculum. The 3dgamelab structure is fantastic as most of the quests are licensed under creative commons, and are available to easily import into your classes, providing you with a pretty incredible database of activities to draw from. On a final note, the educators that I have met and been interacting with since camp have become key members of my PLN. I highly recommend getting involved!
I have been using 3dGameLab as an extension of my video game design and development course, allowing students to extend their learning through fun and engaging quests and 'level up' in class. They love it.