| European Countries by First 2 Letters | 0 | - | 4.95 | 529,212 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,776 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,068 |
| Official European Union Languages | 0 | - | 4.97 | 238,343 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,747 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,977 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,608 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,934 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,167 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,902 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,748 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,939 |
| Italian Foods | 0 | - | 4.30 | 72,728 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,801 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,134 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,982 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,378 |
| Celtic Nations | 0 | - | 4.69 | 46,923 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,388 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,319 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,253 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,198 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,328 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,940 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,348 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,243 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,909 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,197 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,214 |
| German Groups of Things | 0 | - | 4.46 | 38,464 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,314 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,038 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,023 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,456 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,121 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,870 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,853 |
| States of Germany | 0 | - | 4.96 | 152,276 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,972 |
| Regions of Italy | 0 | - | 4.92 | 75,757 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,051 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,813 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,120 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,685 |
| Champions League Winners | 0 | - | 4.92 | 1,005,641 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,192 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,709 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,399 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,247 |
| Name a Valid African Country | 0 | - | 4.98 | 153,943 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,343 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,565 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,546 |
| Departments of France | 0 | - | 4.93 | 53,998 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,534 |
| British to American Food Translation | 0 | - | 3.38 | 51,956 |
| England or Wales? | 0 | - | 4.94 | 45,646 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,152 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 109,895 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,708 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,905 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,587 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,649 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,650 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,613 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,786 |
| Slavic Languages | 0 | - | 4.68 | 54,322 |
| Word Chain - France | 0 | - | 4.38 | 42,766 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,592 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,444 |
| British Groups of Things | 0 | - | 4.25 | 82,857 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,029 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,401 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,946 |
| French Foods | 0 | - | 4.00 | 27,691 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,816 |
| Name that Greek Letter | 0 | - | 4.93 | 323,289 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,600 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,658 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,013 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,130 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,046 |
| American Foods | 0 | - | 3.66 | 39,368 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,884 |
| Countries that Beat Canada | 0 | - | 4.90 | 93,233 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,983 |
| History of Russia Quiz | 0 | - | 4.47 | 31,904 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,713 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,623 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,215 |
| Word Chain - Germany | 0 | - | 4.31 | 22,577 |
| The Trojan War | 0 | - | 4.83 | 39,686 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,715 |
| History of Italy | 0 | - | 4.55 | 31,959 |
| Word Chain - Italy | 0 | - | 4.07 | 23,157 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,723 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,482 |
| Roman Emperors | 0 | - | 4.95 | 119,850 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,641 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,394 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,258 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,203 |
| Geography of Spain | 0 | - | 4.59 | 22,066 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,334 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,042 |
| Name a Valid English City | 0 | - | 4.19 | 16,713 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,877 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,812 |
| Foods by Country of Origin #1 | 0 | - | 4.40 | 336,483 |
| Countries That Produce the Most Spices | 0 | - | 4.44 | 41,568 |
| Countries that Produce the Most Cheese per Capita | 0 | - | 4.51 | 52,803 |
| Fruit and Vegetable Emojis | 0 | - | 4.44 | 88,475 |
| Countries Which Eat the Most Beef | 0 | - | 4.46 | 50,257 |
| Countries by Milk Production | 0 | - | 4.54 | 43,943 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,956 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,140 |
| Australian Capitals | 0 | - | 4.92 | 62,714 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,736 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,759 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,477 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,193 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,250 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,316 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,332 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,648 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,545 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,872 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,246 |
| Europe Map Quiz | 0 | - | 5.00 | 4,759,420 |
| European Geography By Letter - S #1 | 0 | - | 4.54 | 100,446 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,406 |
| Capitals of French Regions | 0 | - | 4.45 | 16,056 |
| Regions of France | 0 | - | 4.75 | 120,618 |
| France Immigration by Country | 0 | - | 4.70 | 76,464 |
| Famous Germans | 0 | - | 4.50 | 55,254 |
| Capitals of German States | 0 | - | 4.74 | 28,944 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,309 |
| Germany True or False? | 0 | - | 4.61 | 48,771 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,957 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,396 |
| Ancient Greek Words | 0 | - | 4.93 | 111,491 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,412 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,303 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,769 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,249 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,429 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,947 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,590 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,497 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,535 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,240 |
| Countries That Eat the Most Pork | 0 | - | 4.18 | 39,261 |
| Countries that Produce the Most Cheese | 0 | - | 4.77 | 63,279 |
| Top 15 Countries with the Most Starbucks | 0 | - | 4.51 | 81,008 |
| Africa Map Quiz | 0 | - | 5.00 | 2,116,511 |
| Oceania Map Quiz | 0 | - | 4.98 | 641,556 |
| Word Chain - Australia | 0 | - | 4.38 | 38,130 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,485 |
| European Physical Geography | 0 | - | 4.26 | 33,493 |
| Geography of Russia | 0 | - | 4.57 | 21,522 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,933 |
| History of Austria | 0 | - | 4.70 | 17,852 |
| Geography of the French Empire | 0 | - | 4.45 | 27,046 |
| The French Revolution | 0 | - | 4.46 | 23,924 |
| France Multiple Choice | 0 | - | 4.39 | 40,727 |
| History of France | 0 | - | 4.59 | 56,928 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,760 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,076 |
| The Vikings! | 0 | - | 4.46 | 28,336 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,096 |
| The Portuguese Empire | 0 | - | 4.58 | 12,057 |
| American to British Word Translation | 0 | - | 4.14 | 138,918 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,879 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,628 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,641 |
| Champions League Top 4 | 0 | - | 4.77 | 136,177 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,447,674 |
| Asia Map Quiz | 0 | - | 4.99 | 915,801 |
| Sushi Translation | 0 | - | 4.08 | 13,940 |
| Countries that Eat the Most Meat | 0 | - | 4.23 | 42,429 |
| Countries of Africa | 0 | - | 5.00 | 2,533,830 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,742 |
| African East Coast | 0 | - | 4.96 | 95,958 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,778 |
| Oceania Geography Quiz | 0 | - | 4.55 | 22,048 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,593 |
| Australia Map Quiz | 0 | - | 4.95 | 344,179 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,737 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,328 |
| South American Geography Quiz #1 | 0 | - | 4.62 | 32,567 |
| United States Map Quiz | 0 | - | 4.98 | 4,156,248 |
| American Geography Quiz for Dummies | 0 | - | 4.41 | 69,101 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 212,030 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,624 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,804 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,240 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,349 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,669 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,839 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,487 |
