Season 19
Episodes
1 Mega Speed Countdown Jul 16, 2013 
2 Mega Machine Countdown Jul 23, 2013 
3 Mega Weapon Countdown Jul 30, 2013 
4 Mega Food Countdown Aug 27, 2013 5 Mega Snack Countdown Sep 7, 2013 
6 Super Strong Countdown Sep 14, 2013 
7 Amazing Job Countdown Sep 21, 2013 
8 Strangest Countdown Sep 28, 2013 9 Hottest Rides Countdown Jun 22, 2014 
10 Amazing Gadgets Countdown Jun 23, 2014 
11 Panama Canal Supersized Apr 11, 2015