| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,246 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,968 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,541 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,491 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,734 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,417 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,771 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,642 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,025 |
| Official European Union Languages | 0 | - | 4.97 | 238,210 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,662 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,637 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,729 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,378 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,494 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,723 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,729 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,904 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,770 |
| Last Names by Country of Origin | 0 | - | 4.63 | 156,383 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,694 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,278 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,047 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,851 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,299 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,900 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,587 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,743 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,368 |
| Celtic Nations | 0 | - | 4.69 | 46,912 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,222 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,884 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,173 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,197 |
| German Groups of Things | 0 | - | 4.46 | 38,450 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,101 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,024 |
| Champions League Winners | 0 | - | 4.92 | 1,004,409 |
| NFL Football Last Names | 0 | - | 4.43 | 171,379 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,298 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,971 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,468 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,219 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,954 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,052 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,757 |
| Countries That Border Russia | 0 | - | 4.98 | 461,229 |
| States of Germany | 0 | - | 4.96 | 152,035 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,916 |
| Regions of Italy | 0 | - | 4.92 | 75,638 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,967 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,704 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,075 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,665 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,099 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,648 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,923 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,523 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,099 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,145 |
| Name a Valid African Country | 0 | - | 4.98 | 153,831 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,624 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,417 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,186 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,410 |
| Russia Country Quiz | 0 | - | 4.85 | 114,318 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,258 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,307 |
| Departments of France | 0 | - | 4.93 | 53,867 |
| Word Chain - France | 0 | - | 4.38 | 42,751 |
| Italian Foods | 0 | - | 4.30 | 72,676 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,526 |
| British Groups of Things | 0 | - | 4.25 | 82,841 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,023 |
| England or Wales? | 0 | - | 4.94 | 45,619 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,947 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,778 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,608 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,820 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,607 |
| Last Names in U.S. History #2 | 0 | - | 4.39 | 17,594 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,316 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,569 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,645 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,539 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,580 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,363 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,846 |
| Slavic Languages | 0 | - | 4.68 | 54,286 |
| Countries that Border Poland | 0 | - | 4.99 | 172,100 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,743 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,117 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,817 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,752 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,278 |
| The Trojan War | 0 | - | 4.83 | 39,663 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,370 |
| Name that Greek Letter | 0 | - | 4.93 | 323,168 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,595 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,437 |
| Roman Emperors | 0 | - | 4.95 | 119,717 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,176 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,427 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,006 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,710 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 488,655 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 712,078 |
| MLB Baseball Last Names | 0 | - | 4.19 | 19,047 |
| Famous Child Stars by Last Name | 0 | - | 4.15 | 13,496 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,910 |
| Famous Russians | 0 | - | 4.16 | 23,823 |
| History of Russia Quiz | 0 | - | 4.49 | 31,887 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,704 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,303 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,202 |
| Word Chain - Germany | 0 | - | 4.31 | 22,567 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,758 |
| History of Italy | 0 | - | 4.55 | 31,943 |
| Word Chain - Italy | 0 | - | 4.07 | 23,151 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,669 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,626 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,178 |
| Geography of Spain | 0 | - | 4.59 | 22,059 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,331 |
| Name a Valid English City | 0 | - | 4.19 | 16,705 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,944 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,946 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,113 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,475 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,706 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,433 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,151 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,202 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,231 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,290 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,611 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,506 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,834 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,197 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,952 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,418 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,375 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,975 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,917 |
| Kosovo Country Quiz | 0 | - | 4.30 | 24,544 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
| Regions of France | 0 | - | 4.75 | 120,486 |
| France Immigration by Country | 0 | - | 4.70 | 76,423 |
| Famous Germans | 0 | - | 4.50 | 55,207 |
| Capitals of German States | 0 | - | 4.74 | 28,936 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,292 |
| Germany True or False? | 0 | - | 4.61 | 48,748 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,899 |
| Ancient Greek Words | 0 | - | 4.93 | 111,404 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,349 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,025 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,252 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,239 |
| British to American Food Translation | 0 | - | 3.38 | 51,949 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,621 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,799 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,499 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,480 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,511 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,230 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,762 |
| Nicknames in U.S. History | 0 | - | 4.25 | 31,702 |
| Most Popular Boy Names in the U.S. 2024 | 0 | - | 4.06 | 177,143 |
| Africa Map Quiz | 0 | - | 5.00 | 2,115,255 |
| Oceania Map Quiz | 0 | - | 4.98 | 640,923 |
| Australian Capitals | 0 | - | 4.92 | 62,702 |
| Word Chain - Australia | 0 | - | 4.38 | 38,124 |
| European Physical Geography | 0 | - | 4.26 | 33,479 |
| Albania Country Quiz | 0 | - | 4.54 | 38,937 |
| Geography of Russia | 0 | - | 4.57 | 21,514 |
| Russian History A-Z | 0 | - | 4.38 | 31,620 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,140 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,917 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,631 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,352 |
| Romania Country Quiz | 0 | - | 4.63 | 53,700 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,979 |
| History of Austria | 0 | - | 4.70 | 17,839 |
| Geography of the French Empire | 0 | - | 4.45 | 27,032 |
| The French Revolution | 0 | - | 4.46 | 23,912 |
| France Multiple Choice | 0 | - | 4.39 | 40,716 |
| History of France | 0 | - | 4.59 | 56,865 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,464 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,533 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,465 |
| The Vikings! | 0 | - | 4.46 | 28,322 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,060 |
| The Portuguese Empire | 0 | - | 4.58 | 12,053 |
| American to British Word Translation | 0 | - | 4.14 | 138,813 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,868 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,592 |
| Champions League Top 4 | 0 | - | 4.77 | 135,929 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,027 |
| Asia Map Quiz | 0 | - | 4.99 | 914,987 |
