| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,322 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,824 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,993 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,973 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,200 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,503 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,483 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,913 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,590 |
| Official European Union Languages | 0 | - | 4.97 | 239,472 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,479 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,281 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,015 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,463 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,417 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,924 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,836 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,233 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,005 |
| Last Names by Country of Origin | 0 | - | 4.64 | 157,165 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,937 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,899 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,240 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,066 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,629 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,346 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,874 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,258 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,475 |
| Celtic Nations | 0 | - | 4.61 | 47,068 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,458 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,111 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,409 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,371 |
| German Groups of Things | 0 | - | 4.47 | 38,603 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,664 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,445 |
| Champions League Winners | 0 | - | 4.92 | 1,013,582 |
| NFL Football Last Names | 0 | - | 4.43 | 171,917 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,521 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,679 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,318 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,578 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,632 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,311 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,733 |
| Countries That Border Russia | 0 | - | 4.98 | 463,991 |
| States of Germany | 0 | - | 4.95 | 154,058 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,556 |
| Regions of Italy | 0 | - | 4.92 | 76,744 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,665 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,055 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,627 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,812 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,917 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,510 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,169 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,225 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,512 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,833 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,698 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,832 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,641 |
| Russia Country Quiz | 0 | - | 4.83 | 115,157 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,637 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,511 |
| Departments of France | 0 | - | 4.93 | 54,887 |
| Word Chain - France | 0 | - | 4.38 | 42,901 |
| Italian Foods | 0 | - | 4.30 | 73,154 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,707 |
| British Groups of Things | 0 | - | 4.25 | 82,977 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,087 |
| England or Wales? | 0 | - | 4.94 | 45,903 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,690 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,818 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,479 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,596 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,969 |
| Name a Valid African Country | 0 | - | 4.98 | 154,832 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,364 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,676 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,835 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,710 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,703 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,164 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,305 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,802 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,827 |
| Slavic Languages | 0 | - | 4.67 | 54,623 |
| Countries that Border Poland | 0 | - | 4.99 | 172,979 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,150 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,904 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,996 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,978 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,931 |
| The Trojan War | 0 | - | 4.83 | 39,937 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,831 |
| Name that Greek Letter | 0 | - | 4.93 | 324,716 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,709 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,709 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,498 |
| Roman Emperors | 0 | - | 4.95 | 120,929 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,742 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,592 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,348 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 491,458 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 715,351 |
| MLB Baseball Last Names | 0 | - | 4.19 | 19,159 |
| Famous Child Stars by Last Name | 0 | - | 4.15 | 13,535 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,656 |
| Famous Russians | 0 | - | 4.16 | 23,893 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| Russian History A-Z | 0 | - | 4.35 | 32,114 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,710 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,314 |
| Word Chain - Germany | 0 | - | 4.31 | 22,660 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,080 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Word Chain - Italy | 0 | - | 4.07 | 23,206 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,220 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,388 |
| Geography of Spain | 0 | - | 4.59 | 22,155 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,389 |
| Name a Valid English City | 0 | - | 4.19 | 16,799 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,347 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,691 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,072 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,036 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,079 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,739 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,081 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,864 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,380 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,594 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,291 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,403 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,211 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,437 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,659 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,137 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,256 |
| Kosovo Country Quiz | 0 | - | 4.30 | 24,681 |
| Capitals of French Regions | 0 | - | 4.45 | 16,157 |
| Regions of France | 0 | - | 4.70 | 121,790 |
| France Immigration by Country | 0 | - | 4.70 | 76,839 |
| Famous Germans | 0 | - | 4.50 | 55,691 |
| Capitals of German States | 0 | - | 4.74 | 29,041 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,504 |
| Germany True or False? | 0 | - | 4.61 | 48,970 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,357 |
| Ancient Greek Words | 0 | - | 4.93 | 112,277 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,233 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,419 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,646 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,383 |
| British to American Food Translation | 0 | - | 3.38 | 52,018 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,772 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,924 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,588 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,624 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,692 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,337 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,335 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,065 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,064 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,807 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 177,993 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,082 |
| Australian Capitals | 0 | - | 4.92 | 62,807 |
| Word Chain - Australia | 0 | - | 4.38 | 38,218 |
| European Physical Geography | 0 | - | 4.26 | 33,574 |
| Albania Country Quiz | 0 | - | 4.54 | 39,186 |
| Geography of Russia | 0 | - | 4.57 | 21,577 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,393 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,081 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,932 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,697 |
| Romania Country Quiz | 0 | - | 4.63 | 54,041 |
| Serbia Country Quiz | 0 | - | 4.44 | 35,169 |
| History of Austria | 0 | - | 4.70 | 17,958 |
| Geography of the French Empire | 0 | - | 4.45 | 27,198 |
| The French Revolution | 0 | - | 4.47 | 24,117 |
| France Multiple Choice | 0 | - | 4.39 | 40,814 |
| History of France | 0 | - | 4.61 | 57,483 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Figures from Greek Mythology | 0 | - | 4.91 | 188,422 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 439,144 |
| The Vikings! | 0 | - | 4.46 | 28,394 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,318 |
| The Portuguese Empire | 0 | - | 4.58 | 12,096 |
| American to British Word Translation | 0 | - | 4.14 | 139,553 |
| Languages of the United Kingdom | 0 | - | 4.14 | 41,027 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,282 |
| Champions League Top 4 | 0 | - | 4.77 | 138,329 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,451,206 |
| Asia Map Quiz | 0 | - | 4.99 | 923,268 |
| Africa Map Quiz | 0 | - | 5.00 | 2,126,302 |
