| States of Germany | 0 | - | 4.95 | 155,015 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,846 |
| Famous Germans | 0 | - | 4.50 | 55,889 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,213 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,769 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,526 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,194 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,928 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,219 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,558 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,226 |
| Regions of Italy | 0 | - | 4.92 | 77,304 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,950 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,650 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,920 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,459 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,370 |
| Departments of France | 0 | - | 4.93 | 55,448 |
| German Groups of Things | 0 | - | 4.47 | 38,680 |
| Germany True or False? | 0 | - | 4.61 | 49,082 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,576 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,792 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,507 |
| England or Wales? | 0 | - | 4.94 | 46,081 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,883 |
| Official European Union Languages | 0 | - | 4.97 | 240,434 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,868 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,525 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,493 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,408 |
| Famous French People | 0 | - | 4.05 | 36,187 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,689 |
| The Mafia Quiz | 0 | - | 4.46 | 23,454 |
| History of The Netherlands | 0 | - | 4.46 | 17,579 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,117 |
| British Acronyms | 0 | - | 4.40 | 45,987 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,234 |
| Celtic Nations | 0 | - | 4.61 | 47,130 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,466 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,899 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,438 |
| European Geography By Letter - D | 0 | - | 4.49 | 118,970 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,399 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,937 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,367 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,957 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,230 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,869 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,618 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,164 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,305 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,683 |
| Regions of France | 0 | - | 4.70 | 122,471 |
| France A-Z | 0 | - | 4.16 | 38,369 |
| France Immigration by Country | 0 | - | 4.70 | 77,033 |
| Capitals of German States | 0 | - | 4.74 | 29,099 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,600 |
| History of Germany | 0 | - | 4.39 | 53,010 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,607 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,967 |
| Counties of England | 0 | - | 4.97 | 804,629 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,989 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 362,959 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,540 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 241,018 |
| Monarchies of Europe | 0 | - | 4.90 | 99,072 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,012 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,858 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,034 |
| Word Chain - Germany | 0 | - | 4.31 | 22,703 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,651 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,944 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,679 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,344 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,585 |
| People on Money - England | 0 | - | 4.29 | 20,875 |
| Champions League Winners | 0 | - | 4.92 | 1,018,481 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 67,150 |
| Monarchies of Asia | 0 | - | 4.97 | 71,640 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,378 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,838 |
| Kings of France Quiz | 0 | - | 4.22 | 32,975 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,580 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,451 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,876 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,985 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,180 |
| European Geography By Letter - E | 0 | - | 4.23 | 120,392 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,791 |
| European Geography By Letter - H | 0 | - | 4.30 | 97,458 |
| European Geography By Letter - G | 0 | - | 4.27 | 104,253 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,793 |
| European Geography By Letter - K | 0 | - | 4.15 | 71,447 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,799 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,736 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 52,042 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,115 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 128,018 |
| European Geography A-Z | 0 | - | 4.29 | 49,531 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,424 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,006 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,034 |
| Word Chain - France | 0 | - | 4.38 | 42,970 |
| Germany Country Quiz | 0 | - | 4.82 | 159,123 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,291 |
| German History A-Z | 0 | - | 4.49 | 24,955 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,292 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,077 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,474 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,275 |
| Italian Foods | 0 | - | 4.30 | 73,418 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,647 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,079 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,162 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,181 |
| British Spellings | 0 | - | 4.06 | 99,638 |
| British Groups of Things | 0 | - | 4.26 | 83,048 |
| UK Immigration by Country | 0 | - | 4.94 | 141,938 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,134 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,337 |
| British Monopoly Board | 0 | - | 4.52 | 41,297 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,099 |
| Geography of Scotland | 0 | - | 4.63 | 21,836 |
| Name the English Monarchs | 0 | - | 4.91 | 507,567 |
| Famous Scottish People | 0 | - | 4.22 | 18,445 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,559 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,833 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,619 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,986 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,646 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.92 | 95,764 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,066 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,809 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,742 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,479 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,486 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,940 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,085 |
| Slavic Languages | 0 | - | 4.67 | 54,798 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,314 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,685 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,167 |
| Geography of Germany | 0 | - | 4.36 | 17,441 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,242 |
| Name that Greek Letter | 0 | - | 4.93 | 325,378 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,671 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,400 |
| Switzerland A-Z | 0 | - | 4.45 | 25,800 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,042 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,116 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,167 |
| Malta Country Quiz | 0 | - | 4.81 | 31,275 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 126,092 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,740 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,298 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,045 |
| History of Russia Quiz | 0 | - | 4.47 | 32,031 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,910 |
| Russian History A-Z | 0 | - | 4.35 | 32,323 |
| Movies Set in France | 0 | - | 4.26 | 13,162 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,837 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,263 |
| The Trojan War | 0 | - | 4.83 | 40,107 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,322 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,051 |
| Famous Irish People | 0 | - | 4.05 | 46,084 |
| History of Italy | 0 | - | 4.55 | 32,195 |
| Word Chain - Italy | 0 | - | 4.07 | 23,233 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,561 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,186 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,718 |
| Roman Emperors | 0 | - | 4.95 | 121,495 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,859 |
| Famous Nordic People | 0 | - | 4.34 | 20,356 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,480 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,425 |
| Name a Valid English City | 0 | - | 4.19 | 16,845 |
| British Geography A-Z | 0 | - | 4.42 | 19,635 |
| London A-Z | 0 | - | 4.10 | 40,916 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,876 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 281,115 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,732 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,489 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,613 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,859 |
| Europe Map Quiz | 0 | - | 5.00 | 4,794,728 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,586 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,259 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,527 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,483 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,268 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,633 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,800 |
| Capitals of French Regions | 0 | - | 4.45 | 16,216 |
| German Loan Words | 0 | - | 4.27 | 141,280 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,640 |
