| European Countries by First 2 Letters | 0 | - | 4.95 | 530,937 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,272 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,977 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,509 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,516 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,684 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,956 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,400 |
| Official European Union Languages | 0 | - | 4.97 | 239,081 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,236 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,507 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,906 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,430 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,269 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,151 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 96,581 |
| Italian Foods | 0 | - | 4.30 | 73,008 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,939 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,724 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,714 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,697 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,837 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,696 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,494 |
| Slavic Countries | 0 | - | 4.96 | 111,993 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,520 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,249 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,783 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,445 |
| Celtic Nations | 0 | - | 4.69 | 47,011 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,390 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,045 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,344 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,319 |
| German Groups of Things | 0 | - | 4.46 | 38,551 |
| Champions League Winners | 0 | - | 4.92 | 1,010,866 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,350 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,216 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,471 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,475 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,454 |
| Geography of Russia | 0 | - | 4.57 | 21,560 |
| Ukraine Country Quiz | 0 | - | 4.43 | 47,846 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,191 |
| States of Germany | 0 | - | 4.95 | 153,545 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,360 |
| Regions of Italy | 0 | - | 4.92 | 76,415 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,513 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,645 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,487 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,658 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,439 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,903 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,651 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 175,008 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,774 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,630 |
| European Geographic Groups of Four | 0 | - | 4.58 | 16,425 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,769 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,240 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,530 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,444 |
| Departments of France | 0 | - | 4.93 | 54,606 |
| Word Chain - France | 0 | - | 4.38 | 42,866 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,637 |
| British Groups of Things | 0 | - | 4.25 | 82,931 |
| British to American Food Translation | 0 | - | 3.38 | 51,993 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,064 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,219 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,479 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,221 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,349 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,715 |
| Name a Valid African Country | 0 | - | 4.98 | 154,508 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,953 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,628 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,668 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,954 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,832 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,691 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,522 |
| Slavic Languages | 0 | - | 4.68 | 54,514 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,023 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,155 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,489 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,949 |
| Moldova Country Quiz | 0 | - | 4.82 | 30,915 |
| The Trojan War | 0 | - | 4.83 | 39,845 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,604 |
| Name that Greek Letter | 0 | - | 4.93 | 324,332 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,400 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,682 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,995 |
| Roman Emperors | 0 | - | 4.95 | 120,536 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,588 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,531 |
| Most Common First Names in Spain | 0 | - | 4.27 | 46,255 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,804 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,056 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,271 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,159 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,264 |
| American Foods | 0 | - | 3.66 | 39,413 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,447 |
| Famous Russians | 0 | - | 4.16 | 23,880 |
| Word Chain - Russia | 0 | - | 4.33 | 15,776 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,794 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,282 |
| French Foods | 0 | - | 4.00 | 27,735 |
| Word Chain - Germany | 0 | - | 4.31 | 22,639 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,248 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Word Chain - Italy | 0 | - | 4.07 | 23,198 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,056 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,745 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,439 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,028 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Geography of Spain | 0 | - | 4.59 | 22,117 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,369 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,374 |
| Name a Valid English City | 0 | - | 4.19 | 16,765 |
| Countries That Produce the Most Spices | 0 | - | 4.44 | 41,634 |
| Countries that Produce the Most Cheese per Capita | 0 | - | 4.51 | 52,939 |
| Fruit and Vegetable Emojis | 0 | - | 4.45 | 90,459 |
| Countries Which Eat the Most Beef | 0 | - | 4.46 | 50,321 |
| Countries by Milk Production | 0 | - | 4.54 | 44,106 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,288 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,098 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,499 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,883 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,437 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,107 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,484 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,284 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,099 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,351 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,938 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,424 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,964 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,581 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 38,094 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 90,172 |
| Capitals of French Regions | 0 | - | 4.45 | 16,123 |
| Regions of France | 0 | - | 4.70 | 121,413 |
| France Immigration by Country | 0 | - | 4.70 | 76,717 |
| Famous Germans | 0 | - | 4.50 | 55,568 |
| Capitals of German States | 0 | - | 4.74 | 29,004 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,418 |
| Germany True or False? | 0 | - | 4.61 | 48,919 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,195 |
| Ancient Greek Words | 0 | - | 4.93 | 112,039 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,904 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,323 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,541 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,365 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,739 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,329 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,186 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,579 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,636 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,308 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,930 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,019 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,753 |
| Countries That Eat the Most Pork | 0 | - | 4.18 | 39,350 |
| Countries that Produce the Most Cheese | 0 | - | 4.77 | 63,394 |
| Top 15 Countries with the Most Starbucks | 0 | - | 4.51 | 81,295 |
| Oceania Map Quiz | 0 | - | 4.98 | 655,785 |
| Australian Capitals | 0 | - | 4.92 | 62,776 |
| Word Chain - Australia | 0 | - | 4.38 | 38,185 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,625 |
| European Physical Geography | 0 | - | 4.26 | 33,551 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 42,327 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,038 |
| Hungary Country Quiz | 0 | - | 4.49 | 43,594 |
| Romania Country Quiz | 0 | - | 4.63 | 53,949 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,079 |
| France Multiple Choice | 0 | - | 4.39 | 40,783 |
| History of France | 0 | - | 4.61 | 57,346 |
| Mediterranean Foods | 0 | - | 3.80 | 11,472 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,951 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,366 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,246 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| American to British Word Translation | 0 | - | 4.14 | 139,400 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,970 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,205 |
| Champions League Top 4 | 0 | - | 4.77 | 137,553 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,450,072 |
| Asia Map Quiz | 0 | - | 4.99 | 920,636 |
| Sushi Translation | 0 | - | 4.08 | 13,958 |
