| Regions of Italy | 0 | - | 4.88 | 59,702 |
| Countries Surrounding Rome | 0 | - | 4.96 | 46,418 |
| European Countries by First 2 Letters | 0 | - | 4.96 | 454,421 |
| Regions of Spain Quiz | 0 | - | 4.85 | 93,726 |
| Cantons of Switzerland | 0 | - | 4.96 | 39,850 |
| Save Europeans by Guessing Countries | 0 | - | 4.85 | 163,910 |
| States of Germany | 0 | - | 4.94 | 121,912 |
| Germany Immigration by Country | 0 | - | 4.90 | 69,015 |
| Counties of Ireland | 0 | - | 4.89 | 157,560 |
| Italian Foods | 0 | - | 4.25 | 63,598 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 31,379 |
| Most Common First Names in Spain | 0 | - | 4.25 | 43,503 |
| Switzerland Immigration by Country | 0 | - | 4.81 | 20,040 |
| Most Common Surnames in the UK | 0 | - | 4.18 | 65,529 |
| Foods in a Full English Breakfast | 0 | - | 4.41 | 72,843 |
| England or Wales? | 0 | - | 4.93 | 39,898 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 396,874 |
| Official European Union Languages | 0 | - | 4.98 | 199,007 |
| European Countries in their Native Language | 0 | - | 4.99 | 143,005 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 382,473 |
| Ancient Roman Trivia #1 | 0 | - | 4.84 | 71,348 |
| Roman Emperors | 0 | - | 4.95 | 94,948 |
| Countries that Beat Switzerland | 0 | - | 4.85 | 37,323 |
| Europe Geography Decoder | 0 | - | 4.89 | 62,854 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.82 | 38,936 |
| Country Quiz on a Map - France | 0 | - | 4.97 | 38,077 |
| Famous Italians | 0 | - | 4.40 | 65,648 |
| The Mafia Quiz | 0 | - | 4.47 | 21,462 |
| French Geography Quiz #1 | 0 | - | 4.86 | 30,824 |
| Italy Multiple Choice | 0 | - | 4.72 | 92,937 |
| Add A Letter - Make a European City | 0 | - | 4.87 | 20,731 |
| Provinces of the Netherlands | 0 | - | 4.61 | 33,017 |
| 100 Greatest Britons Quiz | 0 | - | 4.44 | 45,906 |
| British Acronyms | 0 | - | 4.42 | 43,204 |
| Counties of England | 0 | - | 4.96 | 684,312 |
| The UK for Americans - True or False | 0 | - | 4.46 | 54,585 |
| Celtic Nations | 0 | - | 4.76 | 44,538 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.93 | 1,172,810 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.89 | 79,130 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 283,430 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 113,895 |
| Regions of France | 0 | - | 4.64 | 99,211 |
| France Immigration by Country | 0 | - | 4.80 | 68,401 |
| German Groups of Things | 0 | - | 4.43 | 35,799 |
| Germany True or False? | 0 | - | 4.64 | 44,159 |
| Country Quiz on a Map - Germany | 0 | - | 4.93 | 25,915 |
| Largest Islands of Greece | 0 | - | 4.56 | 39,040 |
| Capitals of Italian Regions | 0 | - | 4.52 | 26,014 |
| Two Letter Roman Numerals | 0 | - | 4.98 | 48,145 |
| UK Cities Map Quiz | 0 | - | 4.94 | 431,427 |
| Parts of the United Kingdom | 0 | - | 4.88 | 83,052 |
| Counties of England Map Quiz | 0 | - | 4.97 | 285,487 |
| Members of the British Royal Family | 0 | - | 4.11 | 108,980 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 264,719 |
| Champions League Winners | 0 | - | 4.91 | 840,836 |
| Asian Countries with the Shortest Names | 0 | - | 4.98 | 120,751 |
| Catholic Countries in Europe | 0 | - | 4.87 | 82,891 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 64,716 |
| Federal Subjects of Russia | 0 | - | 4.95 | 110,604 |
| Regions of France Map Quiz | 0 | - | 4.96 | 126,514 |
| States of Germany Map Quiz | 0 | - | 4.91 | 119,572 |
| Most Popular Types of Pasta | 0 | - | 3.91 | 29,677 |
| Word Chain - Italy | 0 | - | 4.08 | 21,936 |
| Embarrassing Chapters in Italian History | 0 | - | 4.20 | 11,081 |
| Sweden Immigration by Country | 0 | - | 4.66 | 41,986 |
| United Kingdom A-Z | 0 | - | 4.53 | 80,259 |
| U.S. State Nicknames Quiz | 0 | - | 4.49 | 45,843 |
| Count to 10 in Europe: Pro | 0 | - | 4.79 | 60,648 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.71 | 53,508 |
| States of the German Confederation in 1848 | 0 | - | 4.84 | 26,134 |
| History of Italy | 0 | - | 4.49 | 29,669 |
| History of The Netherlands | 0 | - | 4.42 | 15,652 |
| Spain Cities Map Quiz | 0 | - | 4.86 | 85,434 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 168,254 |
| Canary Islands | 0 | - | 4.60 | 16,513 |
| Biggest Spanish Empire Countries | 0 | - | 4.90 | 92,057 |
| British Spellings Quiz | 0 | - | 4.04 | 94,453 |
| British Groups of Things | 0 | - | 4.26 | 79,978 |
| British to American Food Translation. | 0 | - | 3.47 | 50,374 |
| UK Immigration by Country | 0 | - | 4.95 | 124,292 |
| United Kingdom Decoder | 0 | - | 4.27 | 38,658 |
| United Kingdom Country Quiz | 0 | - | 4.94 | 117,371 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 98,636 |
| Geography of Scotland | 0 | - | 4.61 | 19,446 |
| All Champions League Teams Ever | 0 | - | 4.89 | 102,860 |
| Asian Last Names in the United States | 0 | - | 4.41 | 43,019 |
| Name a Valid Asian Country | 0 | - | 4.98 | 91,720 |
| Name a Valid African Country | 0 | - | 4.98 | 123,028 |
| Category Elimination - European Geography #1 | 0 | - | 4.97 | 198,588 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 244,598 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 141,353 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 186,911 |
| Name a Valid European Country #2 | 0 | - | 4.93 | 83,508 |
| France Cities Map Quiz | 0 | - | 4.95 | 146,987 |
| Word Chain - France | 0 | - | 4.38 | 39,806 |
| Famous Germans | 0 | - | 4.39 | 35,103 |
| Germany Country Quiz | 0 | - | 4.83 | 139,051 |
| Germany Cities Map Quiz | 0 | - | 4.84 | 105,202 |
| Ancient Greek Trivia | 0 | - | 4.56 | 63,160 |
| Italy Country Quiz | 0 | - | 4.81 | 107,784 |
| Regions of Italy Map Quiz | 0 | - | 4.95 | 132,732 |
| Italy Cities Map Quiz | 0 | - | 4.96 | 126,361 |
| Countries Italy Declared War On | 0 | - | 4.79 | 39,702 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.47 | 440,239 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.41 | 640,695 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.82 | 9,677 |
| Ancient Roman Trivia #2 | 0 | - | 4.55 | 35,231 |
| Geography of the Roman Empire | 0 | - | 4.58 | 48,297 |
| Roman Names for Places | 0 | - | 4.66 | 41,163 |
| Spanish Immigration by Country | 0 | - | 4.59 | 51,589 |
| Wonderwall Lyrics | 0 | - | 4.22 | 68,422 |
| Best-Selling British Musical Acts | 0 | - | 4.47 | 43,322 |
| Countries that Beat Australia | 0 | - | 4.84 | 69,811 |
| Pre-Euro Currencies | 0 | - | 4.42 | 49,209 |
| Word Scramble - European Countries | 0 | - | 4.71 | 112,966 |
| Top 20 Football Clubs in Europe | 0 | - | 4.49 | 83,791 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.93 | 55,685 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 75,894 |
| Slavic Languages | 0 | - | 4.58 | 48,454 |
| Andorra Country Quiz | 0 | - | 4.88 | 27,617 |
| Famous Dutch and Belgian People | 0 | - | 4.50 | 16,730 |
| History of Germany Quiz | 0 | - | 4.35 | 39,989 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 580,349 |
| The Life of Julius Caesar | 0 | - | 4.46 | 32,002 |
| Geography of the Dutch Empire | 0 | - | 4.70 | 32,250 |
| Famous Nordic People | 0 | - | 4.40 | 10,657 |
| Countries that Beat Portugal | 0 | - | 4.82 | 35,279 |
| Famous Spaniards Quiz | 0 | - | 4.19 | 10,913 |
| Countries of the Spanish Empire | 0 | - | 4.51 | 64,985 |
| Geography of Spain | 0 | - | 4.51 | 20,235 |
| Countries that Beat Spain | 0 | - | 4.96 | 55,463 |
| Word Chain - United Kingdom | 0 | - | 4.04 | 27,890 |
| The British Royal Family - Modern Times | 0 | - | 4.11 | 20,569 |
| People on Money - England | 0 | - | 4.33 | 15,907 |
| Name a Valid English City | 0 | - | 4.16 | 15,255 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 253,375 |
| Countries that Beat China | 0 | - | 4.82 | 99,139 |
| African Countries by First 2 Letters | 0 | - | 4.95 | 243,289 |
| Countries that Beat the United States | 0 | - | 4.92 | 143,964 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 456,422 |
| Name a Valid U.S. State #1 | 0 | - | 4.95 | 183,300 |
| Countries that Beat Canada | 0 | - | 4.91 | 77,562 |
| Top European Languages on a Map | 0 | - | 4.76 | 116,879 |
| Russia Multiple Choice | 0 | - | 4.56 | 37,871 |
| French Geography Quiz #2 | 0 | - | 4.64 | 21,196 |
| Famous French People | 0 | - | 4.15 | 24,076 |
| Movies Set in France | 0 | - | 4.23 | 12,475 |
| French Inventions | 0 | - | 4.08 | 13,316 |
| French Foods | 0 | - | 3.94 | 26,320 |
| History of Paris | 0 | - | 4.20 | 12,626 |
| Word Chain - Germany | 0 | - | 4.29 | 21,013 |
| Germany Multiple Choice | 0 | - | 4.80 | 48,910 |
| Countries that Beat Germany | 0 | - | 4.87 | 69,628 |
| The Trojan War | 0 | - | 4.81 | 35,715 |
| Geography of Ancient Greece | 0 | - | 4.76 | 29,896 |
| Name that Greek Letter | 0 | - | 4.94 | 294,465 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 91,909 |
| Italian Inventions | 0 | - | 3.87 | 17,926 |
| Famous Italian-Americans | 0 | - | 4.13 | 7,249 |
| Countries that Beat Italy | 0 | - | 4.87 | 44,867 |
| Roman History Vocabulary | 0 | - | 4.43 | 54,905 |
| Seven Hills of Rome | 0 | - | 4.68 | 8,499 |
| Switzerland A-Z | 0 | - | 4.40 | 18,337 |
| Fictional Characters from Great Britain | 0 | - | 4.10 | 31,171 |
| Things British People Know that Americans Don't | 0 | - | 4.22 | 48,715 |
| Lord of the Rings Decoder | 0 | - | 4.58 | 38,906 |
| Beatles Songs Quiz | 0 | - | 4.95 | 204,587 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 272,190 |
| Famous Scottish People | 0 | - | 4.19 | 17,481 |
| Countries that Beat Egypt | 0 | - | 4.93 | 50,518 |
| Last Names in U.S. History #1 | 0 | - | 4.24 | 34,117 |
| European Geography By Letter - A | 0 | - | 4.56 | 123,722 |
| European Geography By Letter - B #1 | 0 | - | 4.72 | 103,099 |
| European Geography By Letter - C | 0 | - | 4.44 | 104,499 |
| European Geography By Letter - D | 0 | - | 4.52 | 99,104 |
| European Geography By Letter - L | 0 | - | 4.50 | 104,530 |
| European Geography By Letter - M | 0 | - | 4.55 | 114,009 |
| European Geography By Letter - P | 0 | - | 4.79 | 89,169 |
| European Geography By Letter - N | 0 | - | 4.43 | 93,136 |
| European Geography By Letter - V | 0 | - | 4.45 | 85,966 |
| Europe Map Quiz | 0 | - | 5.00 | 4,261,841 |
| Europe Geography Quiz #1 | 0 | - | 4.52 | 66,787 |
| Europe Geography Quiz #2 | 0 | - | 4.56 | 67,270 |
| Europe Geography Quiz #4 | 0 | - | 4.56 | 65,960 |
| Europe Geography Quiz #5 | 0 | - | 4.53 | 57,653 |
| European Geography By Letter - S #1 | 0 | - | 4.57 | 93,591 |
| European Geography A-Z | 0 | - | 4.43 | 45,100 |
| European Geography By Letter - B #2 | 0 | - | 4.72 | 61,604 |
| Famous Swiss and Austrian People | 0 | - | 4.36 | 13,629 |
| France A-Z | 0 | - | 4.16 | 25,604 |
| Capitals of German States | 0 | - | 4.67 | 26,992 |
| Chancellors of Germany, 1949–present | 0 | - | 4.56 | 13,341 |
| Olympian Gods Quiz | 0 | - | 4.96 | 455,424 |
| Ancient Greek Words | 0 | - | 4.90 | 96,394 |
| NFL Football Last Names | 0 | - | 4.42 | 157,022 |
| Serie A Champions | 0 | - | 4.28 | 50,734 |
| Monaco Country Quiz | 0 | - | 4.45 | 37,275 |
| Netherlands Country Quiz | 0 | - | 4.56 | 72,439 |
| Nordic Cities Map Quiz | 0 | - | 4.72 | 84,852 |
| The Vikings! | 0 | - | 4.44 | 27,027 |
