The opening sequence changed to a black tower with all the dollar figures fading into photographs on a blue, pink, and vermillion sky background, with the gold Jeopardy! logo on top of the tower. Finally, the gold Jeopardy! logo zooms forward, revealing the 2013-present set.
Aimee Seligstein, who played against Julia Collins last season, joined the Jeopardy! staff as a contestant coordinator sometime before the 2014 Tournament of Champions. Around this time, long-time contestant coordinator Robert James took a leave of absence from the show.
The closed captioning sponsors includes two promos before the Double Jeopardy! round.
On early episodes of this season, the co-champion rule was still in place and ties were still allowed in regular-play games.
On the November 24, 2014 episode, after the 2014 Tournament of Champions, in the case of either a two-way tie or a three-way tie after Final Jeopardy!, tiebreakers are now applied into regular-play games after ties resulted in co-champions four times in the first two months.
This is both the last season with the co-champion rule in place for regular-play games and the first season with the tiebreaker rule in place for regular-play games.
On episodes with a full closing credit roll, the split-screen backdrop is a blue and orange gradient space backdrop.
Starting this season, the Sony logo appears on a black background, then a light flashes to reveal an edited version of the Sony Pictures Television logo. This also occurs with the sister show Wheel of Fortune.
This is the third consecutive season where there are no roadshows to tape just like in Seasons 26, 29, and 30. All 230 half-hour episodes are taped in Culver City.
For the first time since Season 4, College Championship has been cancelled due to the cancellation of the online test.
For the first time since Season 2, Teen Tournament was also cancelled due to the cancellation of the online test.
September 2014[]
September 15, 2014: Season 31 kicks off. Alex grew his mustache back.
September 29, 2014: Catherine Hardee finishes with a 4-day total of $95,201.
September 30, 2014: The first time in Season 31 where two of the three Daily Doubles are seen on time.
October 2014[]
October 13, 2014: Alex shaved his mustache again. In addition, the game ended in a tie which resulted in co-champions (Shane Curtis and Dan Tran).
October 30, 2014: A game ended in a tie that resulted in co-champions for the last time, where Ryan Alley and Allison Solomon became the last set of co-champions. The other three instances were September 26, 2014 (Catherine Hardee and Alan Lange), October 13, 2014 (Shane Curtis and Dan Tran), and October 28, 2014 (Bill Albertini and Jenica Jessen). The rematch was played between the tied contestants the following day for the last time, with Ryan Alley and Allison Solomon as last set of returning co-champions, where Tyler Johnson challenged them both as the last lone challenger. The other three instances were September 29, 2014 (the episode where co-champions Catherine Hardee and Alan Lange were both defeated by lone challenger Elisa Korb), October 14, 2014 (Shane Curtis and Dan Tran with Candice Torres), and October 29, 2014 (the episode where lone challenger Ryan Alley defeated co-champions Bill Albertini and Jenica Jessen).
November 2014[]
November 10-21, 2014: The Tournament of Champions is held. Ben Ingram had beaten Larissa Kelly in terms of the longest streak (from first appearance) of correct Final Jeopardy! responses, with 12. Ben Ingram wins the tournament and $250,000. Arthur Chu received $100,000 and Julia Collins received $50,000.
November 24, 2014: The tiebreaker round was applied to regular-play games for the first time, replacing the co-champion rule after ties were no longer allowed in regular-play games. In the first two months of this season alone, there were four ties.
December 2014[]
December 1-5, 2014: Kids Week is held for the last time. This event was dropped due to Gabby's mother being upset when she was in the red before Final Jeopardy!, causing Gabby herself to run backstage in tears.
December 15-16, 2014: For two days in a row, we only saw two of the three Daily Doubles on time.
January 2015[]
January 2, 2015: Vaughan Winchell finishes with a 5-day total of $103,103.
January 8, 2015: Elliot Yates finishes with a 4-day total of $65,000.
January 15, 2015: John Schultz finishes with a 5-day total of $104,500.
February 2015[]
February 2-13, 2015: The Teachers Tournament aired. In this season during the quarter-finals week, Johnny introduced the contestants by their occupation, location, and name, rather than announcing a brief description, location, and name. Jennifer Giles won the tournament and $100,000. Cathy Farrell received $50,000 and Adam Elkana-Hale received $25,000.
February 6, 2015: Show #7000 aired on this date, which is the 6,935th episode.
March 2015[]
March 12, 2015: Kristin Sausville became the only contestant to play Final Jeopardy!.
March 18, 2015: Kristin Sausville finishes with a 5-day total of $94,201.
April 2015[]
April 1, 2015: Michael Bilow finishes with a 3-day total of $96,000.
April 9, 2015: Kerry Greene finishes with a 6-day total of $146,598.
April 20, 2015: Alex Jacob finishes with a 6-day total of $149,802.
May 2015[]
May 4, 2015: Greg Seroka finishes with a 7-day total of $180,401.
May 8, 2015: The 7,000th episode of Jeopardy! aired on this date, which is Show #7,065.
May 11-15, 2015: Celebrity Jeopardy! airs for the last time in the syndicated version.
May 11, 2015: Vince Gilligan, Debra Messing, and Neil Flynn compete.
May 12, 2015: Aaron Rodgers, Kevin O'Leary, and Mark Kelly compete.
May 13, 2015: Mo Rocca, Wendi McLendon-Covey, and John Berman compete.
May 14, 2015: Bellamy Young, Josh Gad, and Ginger Zee compete.
May 15, 2015: Zachary Quinto, Cynthia Rowley, and Penn Jillette compete. Two of the three Daily Doubles are seen on time.
May 20, 2015: The real 7,000th episode of Jeopardy! aired on this date, which in reality is the 7,008th episode.
May 21, 2015: Andrew Haringer finishes with a 5-day total of $96,599.
June 2015[]
June 2, 2015: Dan Feitel finishes with a 5-day total of $127,998.
June 22, 2015: Brendan Bushee finishes with a 5-day total of $126,404.
July 2015[]
July 22, 2015: The final time in Season 31 where two of the three Daily Doubles are seen on time.
July 27, 2015: Scott Lord finishes with a 5-day total of $108,002.
July 27-31, 2015: Some of Alex's audio was rerecorded when his voice recovered.
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