| States of Germany | 0 | - | 4.96 | 150,423 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,130 |
| Famous Germans | 0 | - | 4.50 | 54,688 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,719 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,086 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,461 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,331 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,418 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 210,018 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,947 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,604 |
| Regions of Italy | 0 | - | 4.92 | 74,884 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,928 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,566 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,453 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,859 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,421 |
| Departments of France | 0 | - | 4.93 | 52,980 |
| German Groups of Things | 0 | - | 4.46 | 38,328 |
| Germany True or False? | 0 | - | 4.61 | 48,569 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,647 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,398 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,089 |
| England or Wales? | 0 | - | 4.94 | 45,385 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,683 |
| Official European Union Languages | 0 | - | 4.97 | 237,160 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,025 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,624 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,301 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,591 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,554 |
| The Mafia Quiz | 0 | - | 4.46 | 23,216 |
| History of The Netherlands | 0 | - | 4.46 | 17,335 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,604 |
| British Acronyms | 0 | - | 4.39 | 45,650 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,258 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,497 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,980 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,943 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,794 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,300 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,052 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,851 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,693 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,071 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,397 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,657 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,936 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,160 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,526 |
| Regions of France | 0 | - | 4.78 | 119,481 |
| France A-Z | 0 | - | 4.16 | 38,084 |
| France Immigration by Country | 0 | - | 4.72 | 76,029 |
| Capitals of German States | 0 | - | 4.74 | 28,844 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,126 |
| History of Germany | 0 | - | 4.39 | 52,657 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,561 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,898 |
| Counties of England | 0 | - | 4.97 | 790,249 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,079 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,440 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,709 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,476 |
| Monarchies of Europe | 0 | - | 4.90 | 97,448 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,459 |
| Famous French People | 0 | - | 4.12 | 28,024 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,375 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,879 |
| Word Chain - Germany | 0 | - | 4.31 | 22,486 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,553 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,548 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,143 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,289 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,480 |
| People on Money - England | 0 | - | 4.29 | 16,571 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,387 |
| Champions League Winners | 0 | - | 4.92 | 997,705 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,083 |
| Monarchies of Asia | 0 | - | 4.97 | 70,666 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,489 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,196 |
| Kings of France Quiz | 0 | - | 4.20 | 32,582 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,399 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,737 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,567 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,216 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,172 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,568 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,291 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,728 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,962 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,349 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,555 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,230 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,975 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,340 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,554 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,349 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,224 |
| European Geography A-Z | 0 | - | 4.28 | 49,038 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,492 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,376 |
| Word Chain - France | 0 | - | 4.38 | 42,609 |
| Germany Country Quiz | 0 | - | 4.82 | 156,764 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,303 |
| German History A-Z | 0 | - | 4.49 | 24,445 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,807 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,797 |
| Italy Country Quiz | 0 | - | 4.82 | 122,372 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,553 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,225 |
| Italian Foods | 0 | - | 4.31 | 72,281 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,189 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,779 |
| Canary Islands | 0 | - | 4.61 | 17,418 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,112 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,229 |
| British Spellings | 0 | - | 4.07 | 99,279 |
| British Groups of Things | 0 | - | 4.25 | 82,715 |
| UK Immigration by Country | 0 | - | 4.94 | 139,830 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,969 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,426 |
| British Monopoly Board | 0 | - | 4.52 | 41,065 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,509 |
| Geography of Scotland | 0 | - | 4.63 | 21,502 |
| Name the English Monarchs | 0 | - | 4.92 | 498,686 |
| Famous Scottish People | 0 | - | 4.22 | 18,336 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,719 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,549 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,871 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,698 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,172 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,419 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,475 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,611 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,072 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,304 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,200 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,922 |
| Slavic Languages | 0 | - | 4.67 | 54,039 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,550 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,448 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,562 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,972 |
| French History Multiple Choice | 0 | - | 4.55 | 32,898 |
| Geography of Germany | 0 | - | 4.35 | 17,109 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,817 |
| Name that Greek Letter | 0 | - | 4.94 | 321,924 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,452 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,275 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,491 |
| Switzerland A-Z | 0 | - | 4.45 | 25,531 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,485 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,935 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,485 |
| Malta Country Quiz | 0 | - | 4.81 | 30,872 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,725 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 124,002 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,814 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,602 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,270 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,595 |
| Movies Set in France | 0 | - | 4.26 | 13,087 |
| French Inventions | 0 | - | 4.08 | 13,867 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,683 |
| History of Paris | 0 | - | 4.24 | 13,622 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,013 |
| The Trojan War | 0 | - | 4.83 | 39,475 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,745 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,552 |
| Famous Irish People | 0 | - | 4.05 | 45,872 |
| History of Italy | 0 | - | 4.55 | 31,852 |
| Word Chain - Italy | 0 | - | 4.07 | 23,102 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,266 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,052 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,125 |
| Roman Emperors | 0 | - | 4.95 | 118,661 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,504 |
| Famous Nordic People | 0 | - | 4.34 | 19,899 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,011 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,252 |
| Name a Valid English City | 0 | - | 4.19 | 16,644 |
| London A-Z | 0 | - | 4.10 | 40,665 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,034 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,312 |
| NBA Players by Wikipedia Descriptions | 0 | - | 4.43 | 40,001 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,907 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,813 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,522 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,771 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,028 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,663 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,987 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,023 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,781 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,223 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,669 |
| Capitals of French Regions | 0 | - | 4.45 | 15,996 |
