| States of Germany | 0 | - | 4.96 | 152,028 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,916 |
| Famous Germans | 0 | - | 4.50 | 55,205 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,298 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,900 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,954 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,954 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 78,047 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,753 |
| Regions of Italy | 0 | - | 4.92 | 75,635 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,964 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,698 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,070 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,483 |
| German Groups of Things | 0 | - | 4.46 | 38,450 |
| Germany True or False? | 0 | - | 4.61 | 48,746 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,343 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,238 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,726 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,768 |
| Departments of France | 0 | - | 4.93 | 53,862 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,526 |
| England or Wales? | 0 | - | 4.94 | 45,619 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,024 |
| Official European Union Languages | 0 | - | 4.97 | 238,204 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,654 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,636 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,590 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,933 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,903 |
| Famous French People | 0 | - | 4.06 | 35,153 |
| The Mafia Quiz | 0 | - | 4.46 | 23,301 |
| History of The Netherlands | 0 | - | 4.46 | 17,412 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,770 |
| British Acronyms | 0 | - | 4.39 | 45,769 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,701 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,275 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,045 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 170,845 |
| France A-Z | 0 | - | 4.16 | 38,180 |
| History of Germany | 0 | - | 4.39 | 52,787 |
| Counties of England | 0 | - | 4.97 | 795,143 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,727 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,368 |
| Celtic Nations | 0 | - | 4.69 | 46,912 |
| European Geography By Letter - A | 0 | - | 4.52 | 145,468 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,703 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,431 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,150 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,199 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,225 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,287 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,610 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,502 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,833 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,194 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,418 |
| Regions of France | 0 | - | 4.75 | 120,480 |
| France Immigration by Country | 0 | - | 4.70 | 76,421 |
| Capitals of German States | 0 | - | 4.74 | 28,935 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,292 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,897 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,249 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,094 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,098 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,596 |
| Champions League Winners | 0 | - | 4.92 | 1,004,384 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 239,221 |
| Monarchies of Europe | 0 | - | 4.90 | 97,987 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,526 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,213 |
| Kings of France Quiz | 0 | - | 4.20 | 32,691 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,583 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,464 |
| Word Chain - Germany | 0 | - | 4.31 | 22,567 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,059 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,613 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,873 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,080 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,518 |
| People on Money - England | 0 | - | 4.29 | 16,606 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,665 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,424 |
| Monarchies of Asia | 0 | - | 4.97 | 70,999 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,791 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,141 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,995 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,817 |
| European Geography By Letter - E | 0 | - | 4.23 | 113,311 |
| European Geography By Letter - F | 0 | - | 4.17 | 92,635 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,802 |
| European Geography By Letter - G | 0 | - | 4.27 | 102,457 |
| European Geography By Letter - I | 0 | - | 4.10 | 95,288 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,947 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,550 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,785 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 51,048 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,969 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,827 |
| European Geography A-Z | 0 | - | 4.29 | 49,213 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,415 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,409 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,632 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,508 |
| Word Chain - France | 0 | - | 4.38 | 42,751 |
| Germany Country Quiz | 0 | - | 4.82 | 157,637 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,923 |
| German History A-Z | 0 | - | 4.49 | 24,581 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,951 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,883 |
| Italy Country Quiz | 0 | - | 4.82 | 123,247 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,165 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,852 |
| Italian Foods | 0 | - | 4.30 | 72,672 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,703 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,416 |
| Canary Islands | 0 | - | 4.62 | 17,463 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,782 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,624 |
| British Spellings | 0 | - | 4.06 | 99,413 |
| British Groups of Things | 0 | - | 4.25 | 82,841 |
| UK Immigration by Country | 0 | - | 4.94 | 140,726 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,023 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,524 |
| British Monopoly Board | 0 | - | 4.52 | 41,146 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,282 |
| Geography of Scotland | 0 | - | 4.63 | 21,599 |
| Name the English Monarchs | 0 | - | 4.91 | 501,732 |
| Famous Scottish People | 0 | - | 4.22 | 18,391 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,944 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,880 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,775 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,606 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,597 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,571 |
| 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 | 141,527 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,572 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,450 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,362 |
| Slavic Languages | 0 | - | 4.68 | 54,286 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,729 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,050 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,081 |
| French History Multiple Choice | 0 | - | 4.55 | 33,005 |
| Geography of Germany | 0 | - | 4.35 | 17,169 |
| The Trojan War | 0 | - | 4.83 | 39,661 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,346 |
| Name that Greek Letter | 0 | - | 4.93 | 323,159 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,590 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,585 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,437 |
| Roman Emperors | 0 | - | 4.95 | 119,715 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,426 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,587 |
| Switzerland A-Z | 0 | - | 4.45 | 25,625 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,642 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,006 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,706 |
| Malta Country Quiz | 0 | - | 4.81 | 31,013 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,515 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,445 |
| Top 10 U.S. States by Public Transit | 0 | - | 4.77 | 63,708 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,839 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,906 |
| History of Russia Quiz | 0 | - | 4.49 | 31,886 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,703 |
| Movies Set in France | 0 | - | 4.26 | 13,115 |
| French Inventions | 0 | - | 4.08 | 13,891 |
| History of Paris | 0 | - | 4.24 | 13,641 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,121 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,740 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,602 |
| Famous Irish People | 0 | - | 4.05 | 45,984 |
| History of Italy | 0 | - | 4.55 | 31,941 |
| Word Chain - Italy | 0 | - | 4.07 | 23,151 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,668 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,089 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,625 |
| Famous Nordic People | 0 | - | 4.34 | 20,074 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,178 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,330 |
| Name a Valid English City | 0 | - | 4.19 | 16,705 |
| British Geography A-Z | 0 | - | 4.42 | 19,497 |
| London A-Z | 0 | - | 4.10 | 40,749 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,289 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,943 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,113 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,098 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,013 |
| Europe Map Quiz | 0 | - | 5.00 | 4,756,850 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,220 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,881 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,170 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,196 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,930 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,375 |
| Capitals of French Regions | 0 | - | 4.45 | 16,046 |
