| States of Germany | 0 | - | 4.96 | 151,472 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,727 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,998 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,212 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,239 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 31,817 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,670 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,707 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,760 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 211,513 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,518 |
| Regions of Italy | 0 | - | 4.92 | 75,369 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,283 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,388 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,817 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,182 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,364 |
| Departments of France | 0 | - | 4.93 | 53,526 |
| German Groups of Things | 0 | - | 4.46 | 38,404 |
| Germany True or False? | 0 | - | 4.61 | 48,689 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,479 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,178 |
| England or Wales? | 0 | - | 4.94 | 45,539 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,915 |
| Official European Union Languages | 0 | - | 4.97 | 237,897 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,457 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,954 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,490 |
| Famous French People | 0 | - | 4.12 | 28,168 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,573 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,802 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,825 |
| The Mafia Quiz | 0 | - | 4.46 | 23,263 |
| History of The Netherlands | 0 | - | 4.46 | 17,380 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,701 |
| British Acronyms | 0 | - | 4.39 | 45,725 |
| Famous Scottish People | 0 | - | 4.22 | 18,366 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,340 |
| Celtic Nations | 0 | - | 4.69 | 46,886 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,748 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,173 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,144 |
| European Geography By Letter - D | 0 | - | 4.50 | 107,030 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,495 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,410 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,070 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,845 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,470 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,672 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,831 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,168 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,648 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,928 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,010 |
| Regions of France | 0 | - | 4.78 | 120,178 |
| France A-Z | 0 | - | 4.16 | 38,133 |
| France Immigration by Country | 0 | - | 4.70 | 76,303 |
| Capitals of German States | 0 | - | 4.74 | 28,908 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,241 |
| History of Germany | 0 | - | 4.39 | 52,749 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,786 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,137 |
| Counties of England | 0 | - | 4.97 | 793,604 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,948 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,539 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 353,304 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,994 |
| Monarchies of Europe | 0 | - | 4.90 | 97,800 |
| Federal Subjects of Russia | 0 | - | 4.95 | 145,810 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,967 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,359 |
| Word Chain - Germany | 0 | - | 4.31 | 22,546 |
| Famous Irish People | 0 | - | 4.05 | 45,922 |
| UK Cities Map Quiz | 0 | - | 4.96 | 463,703 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,446 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,858 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,506 |
| People on Money - England | 0 | - | 4.29 | 16,597 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,581 |
| Champions League Winners | 0 | - | 4.92 | 1,002,196 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,216 |
| Monarchies of Asia | 0 | - | 4.97 | 70,895 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,715 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,345 |
| Kings of France Quiz | 0 | - | 4.20 | 32,649 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,447 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,963 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,642 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,922 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,575 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,738 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,472 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,891 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,148 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,766 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,707 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,392 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,111 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,456 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,679 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,729 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,616 |
| European Geography A-Z | 0 | - | 4.29 | 49,152 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,973 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,210 |
| Word Chain - France | 0 | - | 4.38 | 42,708 |
| Germany Country Quiz | 0 | - | 4.82 | 157,360 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,748 |
| German History A-Z | 0 | - | 4.49 | 24,543 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,893 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,859 |
| Italy Country Quiz | 0 | - | 4.82 | 122,831 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,952 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,665 |
| Italian Foods | 0 | - | 4.31 | 72,548 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,559 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,196 |
| Canary Islands | 0 | - | 4.61 | 17,450 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,564 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,513 |
| British Spellings | 0 | - | 4.06 | 99,372 |
| British Groups of Things | 0 | - | 4.25 | 82,808 |
| UK Immigration by Country | 0 | - | 4.94 | 140,514 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,007 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,170 |
| British Monopoly Board | 0 | - | 4.52 | 41,125 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,037 |
| Geography of Scotland | 0 | - | 4.63 | 21,568 |
| Name the English Monarchs | 0 | - | 4.91 | 500,753 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,481 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,746 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,494 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,197 |
| Famous Australians by Description | 0 | - | 4.23 | 27,824 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 82,636 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,266 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,532 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,637 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,388 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,082 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,371 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,227 |
| Slavic Languages | 0 | - | 4.68 | 54,211 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,679 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,571 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,595 |
| Geography of Germany | 0 | - | 4.35 | 17,146 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 645,316 |
| Name that Greek Letter | 0 | - | 4.93 | 322,826 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,546 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,391 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,554 |
| Switzerland A-Z | 0 | - | 4.45 | 25,594 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,606 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,983 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,630 |
| Malta Country Quiz | 0 | - | 4.81 | 30,969 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,623 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,354 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 125,236 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,758 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,252 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,722 |
| Famous Russians | 0 | - | 4.16 | 23,786 |
| History of Russia Quiz | 0 | - | 4.49 | 31,863 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,669 |
| Movies Set in France | 0 | - | 4.26 | 13,106 |
| French Inventions | 0 | - | 4.08 | 13,884 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,962 |
| History of Paris | 0 | - | 4.24 | 13,633 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,097 |
| The Trojan War | 0 | - | 4.83 | 39,611 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,353 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,283 |
| History of Italy | 0 | - | 4.55 | 31,918 |
| Word Chain - Italy | 0 | - | 4.07 | 23,145 |
| Italy Multiple Choice | 0 | - | 4.73 | 103,548 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,077 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,357 |
| Roman Emperors | 0 | - | 4.95 | 119,496 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,593 |
| Famous Nordic People | 0 | - | 4.34 | 20,016 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,132 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,316 |
| Name a Valid English City | 0 | - | 4.19 | 16,691 |
| British Geography A-Z | 0 | - | 4.41 | 19,479 |
| London A-Z | 0 | - | 4.10 | 40,723 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,207 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,412 |
| Famous Chinese People | 0 | - | 4.09 | 11,848 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,060 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,013 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,885 |
| Europe Map Quiz | 0 | - | 5.00 | 4,750,138 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,172 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,828 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,108 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,148 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,875 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,308 |
