When you see Nog attempting a task:
If Nog does NOT appear to lose balance
No button
You can also use these: 
Swipe left
Press left arrow key
If Nog DOES appear to lose balance
Yes button
You can also use these: 
Swipe right
Press right arrow key
Does someone appear to have lost balance? Ask that person if they suddenly feel dizzy or if their leg feels weak or numb.
Now that you can identify balance loss, call 911 RIGHT AWAY!
