The name of our 4th/5th grade group is TNT (The New Tweens) and we use the Minecraft TNT symbol for our logo. Couple that with the fact that pretty much every kid has played or play or knows what Minecraft is and I thought a "real-life" version of Minecraft would be fun! Since I don't know much about minecraft I had to get "tutored" from my kids, and it took quite a bit a planning to bring it together. I did not incorporate anything religious into the lesson but you certainly could. They all had to work together to "mine" the materials so it was not a race. We divided into 3 groups and the groups could communicate with each other via text (using the leaders' phones) so they sent messages to each other to help. We did this in 45 minutes, but I wish I had allowed an hour and a half to do it. We could have spent more time for sure doing the activity. I felt like I rushed them. I had each kid go to one place, but we could've easily made every group go to every place. You can change it up to meet your needs - it's flexible. I don't think you could do it any quicker than 45 minutes though. We did it with 8...and you could do it with 16 easily. Any more than that and you would have to modify my lesson. If you have a large group - you could just have two groups of 16 and "craft" two final projects instead of one. Anyway, if you have questions or ideas, feel free to comment and I can add/edit my lesson :) Enjoy!