| European Countries by First 2 Letters | 0 | - | 4.95 | 526,694 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,974 |
| States of Germany | 0 | - | 4.96 | 150,393 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,129 |
| Regions of Italy | 0 | - | 4.92 | 74,875 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,919 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,528 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,431 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,344 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,835 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,472 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,398 |
| Departments of France | 0 | - | 4.93 | 52,972 |
| German Groups of Things | 0 | - | 4.46 | 38,326 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,395 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,889 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,490 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,480 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,073 |
| England or Wales? | 0 | - | 4.94 | 45,383 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,674 |
| Official European Union Languages | 0 | - | 4.97 | 237,142 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,009 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,601 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,547 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,461 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,586 |
| Word Chain - France | 0 | - | 4.38 | 42,606 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,671 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,547 |
| Italian Foods | 0 | - | 4.31 | 72,268 |
| History of The Netherlands | 0 | - | 4.46 | 17,332 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,598 |
| British Groups of Things | 0 | - | 4.25 | 82,715 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,968 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,257 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,025 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,660 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,984 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,984 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,022 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,932 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,143 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,451 |
| Regions of France | 0 | - | 4.78 | 119,461 |
| France Immigration by Country | 0 | - | 4.72 | 76,029 |
| Famous Germans | 0 | - | 4.50 | 54,679 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,081 |
| Germany True or False? | 0 | - | 4.61 | 48,568 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,539 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,629 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,084 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,933 |
| Counties of England | 0 | - | 4.97 | 790,150 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,434 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,653 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,031 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,427 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,452 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,324 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,403 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,937 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,426 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,363 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,864 |
| Word Chain - Germany | 0 | - | 4.31 | 22,486 |
| Word Chain - Italy | 0 | - | 4.07 | 23,100 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,295 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,515 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,134 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,270 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,249 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,831 |
| Name a Valid English City | 0 | - | 4.19 | 16,642 |
| Champions League Winners | 0 | - | 4.92 | 997,586 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,475 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,165 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,526 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,846 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,720 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,315 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,193 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,600 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,052 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,736 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,296 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,565 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,204 |
| Name a Valid African Country | 0 | - | 4.98 | 153,082 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,629 |
| 75 Americans Named John | 0 | - | 4.41 | 23,832 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,434 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,283 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,413 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,367 |
| Germany Country Quiz | 0 | - | 4.82 | 156,751 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,297 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,795 |
| Italy Country Quiz | 0 | - | 4.82 | 122,356 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,541 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,215 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,179 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,767 |
| Canary Islands | 0 | - | 4.61 | 17,416 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,096 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,220 |
| British Spellings | 0 | - | 4.07 | 99,278 |
| British to American Food Translation | 0 | - | 3.38 | 51,871 |
| British Acronyms | 0 | - | 4.39 | 45,648 |
| UK Immigration by Country | 0 | - | 4.94 | 139,814 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,406 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,501 |
| Geography of Scotland | 0 | - | 4.63 | 21,500 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,701 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,547 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,859 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,682 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,171 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 486,859 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,025 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,470 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,610 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,062 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,285 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,912 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,098 |
| Slavic Languages | 0 | - | 4.67 | 54,034 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,446 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,561 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,971 |
| France A-Z | 0 | - | 4.16 | 38,079 |
| French History Multiple Choice | 0 | - | 4.55 | 32,895 |
| History of Germany | 0 | - | 4.39 | 52,654 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,768 |
| Name that Greek Letter | 0 | - | 4.94 | 321,898 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,450 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,182 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,274 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,197 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,605 |
| Switzerland A-Z | 0 | - | 4.45 | 25,529 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,483 |
| Malta Country Quiz | 0 | - | 4.81 | 30,872 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,926 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,713 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,726 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,936 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,261 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,594 |
| Countries that Beat Russia | 0 | - | 4.84 | 82,000 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,111 |
| Famous French People | 0 | - | 4.12 | 28,014 |
| Movies Set in France | 0 | - | 4.26 | 13,084 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| French Foods | 0 | - | 4.00 | 27,603 |
| History of Paris | 0 | - | 4.24 | 13,622 |
| The Trojan War | 0 | - | 4.83 | 39,474 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,736 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,537 |
| History of Italy | 0 | - | 4.55 | 31,849 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,254 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,052 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,119 |
| Roman Emperors | 0 | - | 4.95 | 118,642 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,502 |
| Famous Nordic People | 0 | - | 4.34 | 19,892 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,398 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,759 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,551 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| Geography of Spain | 0 | - | 4.59 | 21,984 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,479 |
| People on Money - England | 0 | - | 4.29 | 16,571 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,387 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,299 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,285 |
| Last Names by Country of Origin | 0 | - | 4.63 | 155,975 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,821 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,904 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,095 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,484 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,968 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,931 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,782 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,295 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,042 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,789 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,688 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,066 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,387 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,378 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,654 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,214 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,667 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Kings of France Quiz | 0 | - | 4.20 | 32,580 |
