I have a team and they've all played Minecraft and also loved it. I don't think it would be a problem to get the boys playing and testing your game with programmer eyes for some days as work.
It sounds very nice and you could get detailed problem list.
Good afternoon.
Ready to test your game on the bugs.
There is a lot of experience playing in Minekraft
Testing time (number of days testing), you assign
I'll be glad to help you