Blackjack

This just popped into my head so I thought why not try it.

This is how it goes:

What you have to do it add the sum of the digits of your age to the number above you until it reaches 21 or more.

Illustration:

A is 24 y.o so they post 6
B is 18 y.o so they add 1+8=9 to 6 and post 15

Now there could be two scenarios
1. C is 33
3+3=6
So C hits blackjack coz 15+6=21
But B gets a gift from me just to make it interesting

C is 26
2+6=8
So C is busted coz 15+8=23
In this case B has to send gift to C for busting him

The next person starts from zero and the game continues. Let's play

 

6

 

20^ now don't ruin the game

 

Gifted for blackjack...

Again 6

Edit: gifted the wrong person smh

 

14