| European Countries by First 2 Letters | 0 | - | 4.95 | 526,117 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,147 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,541 |
| Official European Union Languages | 0 | - | 4.97 | 236,399 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,625 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,298 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,027 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,981 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,885 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,942 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,496 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,494 |
| Italian Foods | 0 | - | 4.30 | 72,133 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,541 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,556 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,414 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,228 |
| Celtic Nations | 0 | - | 4.69 | 46,800 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,839 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,801 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,633 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,626 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,024 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,349 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,967 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,589 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,916 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,960 |
| German Groups of Things | 0 | - | 4.46 | 38,294 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,983 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,283 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,280 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,145 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,107 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,147 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,682 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,720 |
| States of Germany | 0 | - | 4.96 | 149,869 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,940 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,493 |
| Regions of Italy | 0 | - | 4.92 | 74,620 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,757 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,182 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,071 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,396 |
| Champions League Winners | 0 | - | 4.92 | 995,401 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,270 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,297 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,781 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,006 |
| Name a Valid African Country | 0 | - | 4.98 | 152,848 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,073 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,419 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,086 |
| Departments of France | 0 | - | 4.93 | 52,705 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,348 |
| British to American Food Translation | 0 | - | 3.38 | 51,805 |
| England or Wales? | 0 | - | 4.94 | 45,287 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,338 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,601 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,474 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,969 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,428 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,379 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,931 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,861 |
| Slavic Languages | 0 | - | 4.67 | 53,942 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,419 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,231 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 334,462 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,762 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,896 |
| French Foods | 0 | - | 4.00 | 27,584 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,398 |
| Name that Greek Letter | 0 | - | 4.94 | 321,481 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,464 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,424 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,904 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,853 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,383 |
| American Foods | 0 | - | 3.66 | 39,271 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,430 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,807 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,038 |
| History of Russia Quiz | 0 | - | 4.49 | 31,777 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,550 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,811 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,083 |
| Word Chain - Germany | 0 | - | 4.31 | 22,471 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,408 |
| History of Italy | 0 | - | 4.55 | 31,803 |
| Word Chain - Italy | 0 | - | 4.07 | 23,083 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,108 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,996 |
| Roman Emperors | 0 | - | 4.95 | 118,348 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,469 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,277 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,613 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,965 |
| Geography of Spain | 0 | - | 4.59 | 21,944 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,233 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,783 |
| Name a Valid English City | 0 | - | 4.19 | 16,624 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,988 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,135 |
| Countries That Produce the Most Spices | 0 | - | 4.44 | 41,440 |
| Countries that Produce the Most Cheese per Capita | 0 | - | 4.53 | 52,508 |
| Fruit and Vegetable Emojis | 0 | - | 4.42 | 79,375 |
| Countries Which Eat the Most Beef | 0 | - | 4.46 | 50,078 |
| Countries by Milk Production | 0 | - | 4.54 | 43,580 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,790 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,840 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,328 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,838 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,774 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,645 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,168 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,797 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,629 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,593 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,996 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,254 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,535 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,560 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,104 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,583 |
| Capitals of French Regions | 0 | - | 4.45 | 15,980 |
| Regions of France | 0 | - | 4.78 | 119,093 |
| France Immigration by Country | 0 | - | 4.72 | 75,928 |
| Famous Germans | 0 | - | 4.50 | 54,575 |
| Capitals of German States | 0 | - | 4.74 | 28,799 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,084 |
| Germany True or False? | 0 | - | 4.61 | 48,512 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,422 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,241 |
| Ancient Greek Words | 0 | - | 4.92 | 110,597 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,273 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,742 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,298 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,031 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,250 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,903 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,232 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,309 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,307 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,140 |
| Countries That Eat the Most Pork | 0 | - | 4.18 | 39,102 |
| Countries that Produce the Most Cheese | 0 | - | 4.74 | 63,033 |
| Top 15 Countries with the Most Starbucks | 0 | - | 4.51 | 80,418 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,166 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,713 |
| Word Chain - Australia | 0 | - | 4.37 | 38,006 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,243 |
| European Physical Geography | 0 | - | 4.26 | 33,367 |
| Geography of Russia | 0 | - | 4.57 | 21,419 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,759 |
| History of Austria | 0 | - | 4.70 | 17,742 |
| Geography of the French Empire | 0 | - | 4.48 | 26,917 |
| The French Revolution | 0 | - | 4.46 | 23,757 |
| France Multiple Choice | 0 | - | 4.38 | 40,621 |
| History of France | 0 | - | 4.59 | 55,920 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,374 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,233 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,573 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,663 |
| The Portuguese Empire | 0 | - | 4.54 | 11,984 |
| American to British Word Translation | 0 | - | 4.06 | 117,022 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,690 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,175 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,383 |
| Champions League Top 4 | 0 | - | 4.77 | 133,584 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,438,531 |
| Asia Map Quiz | 0 | - | 4.99 | 906,189 |
| Sushi Translation | 0 | - | 4.08 | 13,897 |
| Countries that Eat the Most Meat | 0 | - | 4.23 | 42,348 |
| Countries of Africa | 0 | - | 5.00 | 2,505,488 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 45,754 |
| African East Coast | 0 | - | 4.96 | 94,963 |
| Western Africa Map Quiz | 0 | - | 4.97 | 72,835 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,971 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 49,736 |
| Australia Map Quiz | 0 | - | 4.94 | 342,294 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,607 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,180 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,459 |
| United States Map Quiz | 0 | - | 4.98 | 4,140,231 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 68,675 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 209,922 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,163 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,800 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,136 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,160 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,404 |
