To get this weeks badge in about 15 minutes just stack all the cards one on top of another. Just keep clicking working through the stack. You'll get between 2-5 21's per stack and it takes less than 15 seconds to go through a stack. Do the math and it takes about 15 minutes to get the badge.
I got mine in about 5 minutes. ;)
Well I'm slow...I am from Oklahoma you know
took me about 5 mins too.
I dreaded having to do this challenge ever since i found out it was coming, but i just stacked my cards in a couple columns and i had it in about 5 minutes.
This isnt bad. I got 7 one time. And up to 120 another time. I should have it by tonight. GL all.
i had my badge within about 5 minutes also. but what we find easy, others find difficult.