Season 4

In this series return round, the specialty subjects are Batman: The Dark Knight Trilogy, The Beatles’ Abbey Road album, the continent of Africa, and the K-pop boy group Seventeen.

In this round, the specialty subjects are Split Enz, the Battle of Hastings, the Mistborn Era One Trilogy, and Aladdin (1992).

In this round, the specialty subjects are Daria Seasons 1–5, Australian Cricket (2010–2020), the London Symphony Orchestra, and the life and times of Mr T.

In this round, the specialty subjects are the Harry Potter and the Goblet of Fire film, Ocean Liners (1897–1969), the Australian War Memorial, and the Big Wednesday film.

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are Tim Cahill, Six The Musical, Roman History: Julio-Claudian Period, and the TV series Veronica Mars.

In this round, the specialty subjects are Triple J's Hottest 100 (2011–2020), the history of Robotic Space Exploration, the Dissolution of Yugoslavia, and the Logan’s Run film.

In this round, the specialty subjects are the Pitch Perfect film, NBA League history (1986–2021), Magda Szubanski, and Will & Grace (Seasons 6–8).

In this round, the specialty subjects are the Chronicles of Narnia books, Duran Duran, The Concorde, and Rollercoasters.

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are the Whitlam government, The Little Mermaid film, the Scream films (1–3), and the 2000 Olympics.

In this round, the specialty subjects are Everest with Sir Edmund Hillary and Tenzing Norgay, Hamilton (musical), David Bowie's Berlin album trilogy, and Australian Prime Ministers.

In this round, the specialty subjects are Ariana Grande, Tom Keneally novels, Carousel (musical), and Blink 182.

In this round, the specialty subjects are Patrick White novels, Wicked (musical), Paul the Apostle, and the Starship Troopers film.

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are U.S states and their capitals, the Bridesmaids film, Friends (Seasons 1–5), and dinosaurs of Australia.

In this round, the specialty subjects are Thor: Ragnarok, New Girl (Seasons 1–4), the Fellowship of the Rings film, and Regular Show (Seasons 1–4).

In this round, the specialty subjects are The Chronicles of Narnia Disney film, the Avengers: Endgame film, the A Knight's Tale film, and the His Dark Materials book trilogy by Phillipe Pullman.

In this round, the specialty subjects are the Jumanji film, the Maddaddam book trilogy by Margaret Atwood, the Goldfinger film, and U.S Masters (2010–2020).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are the Ferris Bueller's Day Off film, the Ghostbusters film, The Princess Bride film, and the Top Gun film.

In this round, the specialty subjects are the Sydney Swans (AFL), the Olympic Games: Equestrian (2004–2020), Parramatta Eels (NRL 2015–2021), and the Socceroos.

In this round, the specialty subjects are The Clash, Iron Maiden, Bruce Springsteen, and KISS.

In this round, the specialty subjects are Blackadder, Seinfeld (Seasons 1–3), How I Met Your Mother (Seasons 1–3), Brooklyn Nine-Nine (Seasons 2–4).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are Sonic Youth, the narrative works of Lois McMaster Bujold, For Your Eyes Only (film), and The Bronze Horseman (novel).

In this round, the specialty subjects Savage Garden, Disco Elysium (Game), High Fidelity (Film), and the history of the Tudor monarchs.

In this round, the specialty subjects are The Police (band), Winston Churchill, the life and times of Constantine the Great, and Alfred Hitchcock's Psycho.

In this round, the specialty subjects are the Original Star Wars trilogy, The Hitman video games, A League Of Their Own (film), and Ruby Redfort by Lauren Child (Books 1–3).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are the Gorillaz, Futurama (seasons 1–4), 1984 by George Orwell (book and film), and Terminator (film 1 and 2).

In this round, the specialty subjects are the 1947 Independence Of India, Christopher Reeve's Superman (1 and 2), the formation of Australian Federation, and the Rivers Of London (books 1–3).

In this round, the specialty subjects are INXS, the Yom Kippur War, Derek (TV series), and South Park (seasons 22–23).

In this round, the specialty subjects are The Departed (film), The Lord of the Rings books, The Thick Of It (seasons 3–4), and the Book Of Mormon (musical).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are The Hunt For Red October (film), The Venture Bros (season 6), Monsters, Inc. (film), and Fleetwood Mac's Rumours album.

In this round, the specialty subjects are Current National World Flags, The Last Of Us (game), Abebe Bikila, and Little Shop Of Horrors (film).

In this round, the specialty subjects are The Amazing Race U.S (seasons 20–25), One Direction, Batman: Arkham City (game), and LA Lakers 2010s.

In this round, the specialty subjects are the Military Career Of Napoleon Bonaparte, Breathless (1960 film), the discography of Ruby Fields, and So I Married An Axe Murderer (film).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are Chinese History (1894–1928), The Fall Of The Last Imperial Dynasty & Warlordism, The Karate Kid (1984 film), Australian Cattle Dogs, and the Red Hot Chili Peppers.

In this round, the specialty subjects are Probability Theory, Patrick O’Brian Sea Stories: Vol. 1–4, The Life And Career Of Kim Kardashian, and Nike.

In this round, the specialty subjects are The Flash (DC Comic Series), NSW Koalas, The State Of Wisconsin (History, Geography, Sports & Culture), and The Shining (1980 film).

In this round, the specialty subjects are The Life And Works Of Weird Al Yankovic, British Columbia: Geography & History, The City Watch Novels Of Discworld, and Life And Music Of Björk.

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are The Hunger Games Trilogy (books), Thunderbirds (TV Series), 1942 Kokoda Campaign, and Schitt’s Creek (season 1 and 2).

In this round, the specialty subjects are The Real Housewives Of Melbourne (season 1–4), Saul Bass, Pugs, and Outliers By Malcolm Gladwell.

In this round, the specialty subjects are The Secret Garden (book and film), Life And Works Of Vincent Van Gogh, Buffy The Vampire Slayer Season 7, and Blade Runner (film).

In this round, the specialty subjects are Formula One World Championships: 2000–2021, Sid And Marty Krofft (Life And Careers), Mickey Rourke Films (1983–1988), and 30 Rock (seasons 1–4).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are The Bold and the Beautiful (TV Series), Indian Test Cricket (2010–2019), Constants Of Physics, and Genetic Engineering Of Plants.

In this round, the specialty subjects are Muse, Babylon 5 (Seasons 1–5), The Philadelphia Story (film) , and Life And Career Of Ash Barty.

In this round, the specialty subjects are The Doors (band), The Alien Quadrilogy films, Major Deserts Of North America (Mojave, Sonoran, Chihuahuan, Great Basin), and Seinfeld (Seasons 6–9).

In this round, the specialty subjects are Suncorp Super Netball (2017–Present), Doctor Who: The 10th Doctor (David Tennant), Joker (2019 film), and The Cornetto Trilogy films (Hot Fuzz, Shaun Of The Dead, The World's End).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.

In this round, the specialty subjects are The Life and Music of Carole King, Neighbours characters and storylines: 2000–2004, Films of Karan Johar, and Alice in Wonderland.

In this round, the specialty subjects are the film Fantastic Mr Fox, Kill Bill: Volume 1 and 2 (film series), First Ladies of the USA in the 20th Century, and The Heroic Age of Antarctic Exploration.

In this round, the specialty subjects are The Life of Hugo Throssell, Pinball Machines: 1990s–Present, Avatar: The Last Airbender (TV Series), and Western Music Theory.

In this round, the specialty subjects are The Electromagnetic Spectrum, Delta Goodrem, Peep Show Seasons 4–6, and 90's US Boy Bands (Hanson, Backstreet Boys, N-Sync, Boyz II Men).

In this final round, the four reigning champions from this cycle battle it out to progress to the semi-finals.