| States of Germany | 0 | - | 4.95 | 154,053 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,552 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,205 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,773 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,627 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,344 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,577 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,622 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,303 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 215,960 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,728 |
| Famous French People | 0 | - | 4.07 | 36,013 |
| Regions of Italy | 0 | - | 4.92 | 76,738 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,660 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,051 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,620 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,185 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,468 |
| Departments of France | 0 | - | 4.93 | 54,881 |
| German Groups of Things | 0 | - | 4.47 | 38,601 |
| Germany True or False? | 0 | - | 4.61 | 48,966 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,706 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,382 |
| England or Wales? | 0 | - | 4.94 | 45,901 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,587 |
| Official European Union Languages | 0 | - | 4.97 | 239,464 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,472 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,261 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,273 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,632 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,231 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,447 |
| The Mafia Quiz | 0 | - | 4.46 | 23,413 |
| History of The Netherlands | 0 | - | 4.46 | 17,530 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,003 |
| British Acronyms | 0 | - | 4.40 | 45,904 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,058 |
| Famous Scottish People | 0 | - | 4.22 | 18,428 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,474 |
| Celtic Nations | 0 | - | 4.61 | 47,067 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,687 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,066 |
| European Geography By Letter - C | 0 | - | 4.43 | 122,988 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,074 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,735 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,072 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,863 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,379 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,591 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,286 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,210 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,894 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,225 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,047 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,117 |
| Regions of France | 0 | - | 4.70 | 121,778 |
| France A-Z | 0 | - | 4.16 | 38,313 |
| France Immigration by Country | 0 | - | 4.70 | 76,839 |
| Capitals of German States | 0 | - | 4.74 | 29,037 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,503 |
| History of Germany | 0 | - | 4.39 | 52,945 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,347 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,645 |
| Counties of England | 0 | - | 4.97 | 801,413 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,661 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,765 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,222 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 240,619 |
| Monarchies of Europe | 0 | - | 4.90 | 98,674 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,973 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,383 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,566 |
| Word Chain - Germany | 0 | - | 4.31 | 22,659 |
| Famous Irish People | 0 | - | 4.05 | 46,053 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,971 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,392 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,691 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,566 |
| People on Money - England | 0 | - | 4.29 | 16,636 |
| Champions League Winners | 0 | - | 4.92 | 1,013,521 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,886 |
| Monarchies of Asia | 0 | - | 4.97 | 71,401 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,197 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,696 |
| Kings of France Quiz | 0 | - | 4.20 | 32,882 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,545 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,317 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,810 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,644 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 73,051 |
| European Geography By Letter - E | 0 | - | 4.23 | 114,806 |
| European Geography By Letter - F | 0 | - | 4.15 | 94,112 |
| European Geography By Letter - H | 0 | - | 4.30 | 96,917 |
| European Geography By Letter - G | 0 | - | 4.27 | 103,619 |
| European Geography By Letter - I | 0 | - | 4.07 | 96,311 |
| European Geography By Letter - K | 0 | - | 4.15 | 70,948 |
| European Geography By Letter - O | 0 | - | 4.29 | 63,362 |
| European Geography by Letter - W | 0 | - | 4.21 | 83,417 |
| European Geography By Letter - S #2 | 0 | - | 4.20 | 51,707 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,661 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,591 |
| European Geography A-Z | 0 | - | 4.29 | 49,437 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,490 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,879 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,534 |
| Word Chain - France | 0 | - | 4.38 | 42,899 |
| Germany Country Quiz | 0 | - | 4.83 | 158,594 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,915 |
| German History A-Z | 0 | - | 4.49 | 24,864 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,177 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,008 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,035 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,885 |
| Italian Foods | 0 | - | 4.30 | 73,149 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,334 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,626 |
| Canary Islands | 0 | - | 4.62 | 17,514 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,620 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,971 |
| British Spellings | 0 | - | 4.06 | 99,564 |
| British Groups of Things | 0 | - | 4.25 | 82,975 |
| UK Immigration by Country | 0 | - | 4.94 | 141,492 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,087 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,690 |
| British Monopoly Board | 0 | - | 4.52 | 41,240 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,480 |
| Geography of Scotland | 0 | - | 4.63 | 21,705 |
| Name the English Monarchs | 0 | - | 4.91 | 505,500 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,677 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,643 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,807 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,470 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,962 |
| Famous Australians by Description | 0 | - | 4.23 | 28,090 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 89,747 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,582 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,710 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,699 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,161 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,295 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,773 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,801 |
| Slavic Languages | 0 | - | 4.68 | 54,621 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,015 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,658 |
| Geography of Germany | 0 | - | 4.35 | 17,249 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,796 |
| Name that Greek Letter | 0 | - | 4.93 | 324,700 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,708 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,592 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,845 |
| Switzerland A-Z | 0 | - | 4.45 | 25,743 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,913 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,075 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,014 |
| Malta Country Quiz | 0 | - | 4.81 | 31,205 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,700 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,321 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,146 |
| Famous Canadians by Picture | 0 | - | 4.39 | 49,478 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,650 |
| Famous Russians | 0 | - | 4.16 | 23,892 |
| History of Russia Quiz | 0 | - | 4.47 | 31,987 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,835 |
| Russian History A-Z | 0 | - | 4.35 | 32,109 |
| Movies Set in France | 0 | - | 4.26 | 13,144 |
| French Inventions | 0 | - | 4.10 | 13,918 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,587 |
| History of Paris | 0 | - | 4.24 | 13,668 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,215 |
| The Trojan War | 0 | - | 4.83 | 39,936 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,696 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,168 |
| History of Italy | 0 | - | 4.55 | 32,113 |
| Word Chain - Italy | 0 | - | 4.07 | 23,205 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,215 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,150 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,497 |
| Roman Emperors | 0 | - | 4.95 | 120,923 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,785 |
| Famous Nordic People | 0 | - | 4.34 | 20,242 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,385 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,387 |
| Name a Valid English City | 0 | - | 4.19 | 16,798 |
| British Geography A-Z | 0 | - | 4.42 | 19,593 |
| London A-Z | 0 | - | 4.10 | 40,859 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,674 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,330 |
| Famous Chinese People | 0 | - | 4.09 | 11,910 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,057 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,346 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 52,421 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 118,561 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,198 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,457 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,109 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,408 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,369 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,138 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,435 |
