| States of Germany | 0 | - | 4.96 | 149,988 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,995 |
| Famous Germans | 0 | - | 4.50 | 54,601 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,268 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,040 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,315 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,193 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,211 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,364 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,751 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,513 |
| Regions of Italy | 0 | - | 4.92 | 74,677 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,787 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,291 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,132 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,452 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,115 |
| Departments of France | 0 | - | 4.93 | 52,778 |
| German Groups of Things | 0 | - | 4.46 | 38,302 |
| Germany True or False? | 0 | - | 4.61 | 48,525 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,365 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,357 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,040 |
| England or Wales? | 0 | - | 4.94 | 45,306 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,569 |
| Official European Union Languages | 0 | - | 4.97 | 236,479 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,681 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,107 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,207 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,526 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,443 |
| The Mafia Quiz | 0 | - | 4.46 | 23,203 |
| History of The Netherlands | 0 | - | 4.46 | 17,306 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,557 |
| British Acronyms | 0 | - | 4.39 | 45,617 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,237 |
| Celtic Nations | 0 | - | 4.69 | 46,808 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,371 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,875 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,809 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,682 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,198 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,855 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,652 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,612 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,010 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,286 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,580 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,833 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,769 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,818 |
| Regions of France | 0 | - | 4.78 | 119,190 |
| France A-Z | 0 | - | 4.16 | 38,054 |
| France Immigration by Country | 0 | - | 4.72 | 75,950 |
| Capitals of German States | 0 | - | 4.74 | 28,810 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,090 |
| History of Germany | 0 | - | 4.39 | 52,612 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,456 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,767 |
| Counties of England | 0 | - | 4.97 | 788,987 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,930 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,382 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,744 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,291 |
| Monarchies of Europe | 0 | - | 4.90 | 97,292 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,925 |
| Famous French People | 0 | - | 4.12 | 27,931 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,090 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,667 |
| Word Chain - Germany | 0 | - | 4.31 | 22,474 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,081 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,887 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,060 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,459 |
| People on Money - England | 0 | - | 4.29 | 16,561 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,318 |
| Champions League Winners | 0 | - | 4.92 | 996,055 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,985 |
| Monarchies of Asia | 0 | - | 4.97 | 70,589 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,424 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,130 |
| Kings of France Quiz | 0 | - | 4.20 | 32,549 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,382 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,686 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,402 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,076 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,062 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,508 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,189 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,476 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,878 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,252 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,469 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,143 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,905 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,286 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,496 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,220 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,098 |
| European Geography A-Z | 0 | - | 4.28 | 48,987 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,152 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,154 |
| Word Chain - France | 0 | - | 4.38 | 42,576 |
| Germany Country Quiz | 0 | - | 4.82 | 156,496 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,124 |
| German History A-Z | 0 | - | 4.49 | 24,213 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,765 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,765 |
| Italy Country Quiz | 0 | - | 4.82 | 122,162 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,330 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,048 |
| Italian Foods | 0 | - | 4.31 | 72,160 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,936 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,615 |
| Canary Islands | 0 | - | 4.61 | 17,398 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,764 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,135 |
| British Spellings | 0 | - | 4.07 | 99,201 |
| British Groups of Things | 0 | - | 4.25 | 82,667 |
| UK Immigration by Country | 0 | - | 4.94 | 139,587 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,944 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,103 |
| British Monopoly Board | 0 | - | 4.52 | 41,027 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,223 |
| Geography of Scotland | 0 | - | 4.63 | 21,475 |
| Name the English Monarchs | 0 | - | 4.92 | 497,774 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,444 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,482 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,686 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,533 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,087 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,220 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,443 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,598 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,972 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,986 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,107 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,778 |
| Slavic Languages | 0 | - | 4.67 | 53,966 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,508 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,380 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,551 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,961 |
| French History Multiple Choice | 0 | - | 4.55 | 32,869 |
| Geography of Germany | 0 | - | 4.35 | 17,082 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,733 |
| Name that Greek Letter | 0 | - | 4.94 | 321,608 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,427 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,242 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,470 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,471 |
| Switzerland A-Z | 0 | - | 4.45 | 25,502 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,439 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,908 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,434 |
| Malta Country Quiz | 0 | - | 4.81 | 30,823 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,485 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,841 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,632 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,536 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,100 |
| History of Russia Quiz | 0 | - | 4.49 | 31,788 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,560 |
| Movies Set in France | 0 | - | 4.26 | 13,070 |
| French Inventions | 0 | - | 4.08 | 13,864 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,579 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,981 |
| The Trojan War | 0 | - | 4.83 | 39,422 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,503 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,233 |
| Famous Irish People | 0 | - | 4.05 | 45,854 |
| History of Italy | 0 | - | 4.55 | 31,811 |
| Word Chain - Italy | 0 | - | 4.07 | 23,087 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,145 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,038 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,034 |
| Roman Emperors | 0 | - | 4.95 | 118,429 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,477 |
| Famous Nordic People | 0 | - | 4.34 | 19,849 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,977 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,237 |
| Name a Valid English City | 0 | - | 4.19 | 16,628 |
| London A-Z | 0 | - | 4.10 | 40,633 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 51,935 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,074 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,855 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,721 |
| Countries Closest to United States A-Z | 0 | - | 4.81 | 117,391 |
| Europe Map Quiz | 0 | - | 5.00 | 4,730,331 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,981 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,607 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,935 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,972 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,737 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,134 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,603 |
| Capitals of French Regions | 0 | - | 4.45 | 15,982 |
