| Regions of Italy | 0 | - | 4.92 | 75,824 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,540 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 529,331 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 213,097 |
| States of Germany | 0 | - | 4.96 | 152,407 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,998 |
| Italian Foods | 0 | - | 4.30 | 72,759 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,110 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,890 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,176 |
| Departments of France | 0 | - | 4.93 | 54,051 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,454 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,607 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,671 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,209 |
| England or Wales? | 0 | - | 4.94 | 45,670 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,100 |
| Official European Union Languages | 0 | - | 4.97 | 238,429 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,795 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,062 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,920 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,761 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,604 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,967 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,164 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,013 |
| The Mafia Quiz | 0 | - | 4.46 | 23,316 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,506 |
| Roman Emperors | 0 | - | 4.95 | 119,968 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,823 |
| History of Italy | 0 | - | 4.55 | 31,968 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,758 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,382 |
| Celtic Nations | 0 | - | 4.69 | 46,932 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,328,185 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,344 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,355 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,522 |
| Regions of France | 0 | - | 4.75 | 120,710 |
| France Immigration by Country | 0 | - | 4.70 | 76,488 |
| Famous Germans | 0 | - | 4.50 | 55,272 |
| German Groups of Things | 0 | - | 4.46 | 38,472 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,336 |
| Germany True or False? | 0 | - | 4.61 | 48,786 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,977 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,985 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,327 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,259 |
| Counties of England | 0 | - | 4.97 | 796,277 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,619 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,650 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,074 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,354 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 80,920 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,020 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,363 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,752 |
| Word Chain - Italy | 0 | - | 4.07 | 23,162 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,100 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,110 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,417 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,964 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,562 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,058 |
| Champions League Winners | 0 | - | 4.92 | 1,006,137 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,241 |
| U.S. State Nicknames | 0 | - | 4.47 | 50,497 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,478 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,111 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,994 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,691 |
| Name a Valid African Country | 0 | - | 4.98 | 154,013 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,118 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,728 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,022 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,783 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,633 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,670 |
| Famous French People | 0 | - | 4.06 | 35,515 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,694 |
| Word Chain - France | 0 | - | 4.38 | 42,771 |
| Germany Country Quiz | 0 | - | 4.82 | 157,791 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,268 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,981 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,908 |
| Italy Country Quiz | 0 | - | 4.82 | 123,364 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,308 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,987 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,313 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,895 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,604 |
| Canary Islands | 0 | - | 4.62 | 17,475 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,937 |
| Switzerland Immigration by Country | 0 | - | 4.68 | 29,686 |
| British Spellings | 0 | - | 4.06 | 99,445 |
| British Groups of Things | 0 | - | 4.25 | 82,862 |
| British to American Food Translation | 0 | - | 3.38 | 51,961 |
| British Acronyms | 0 | - | 4.40 | 45,790 |
| UK Immigration by Country | 0 | - | 4.94 | 140,854 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,034 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,705 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,523 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,760 |
| Geography of Scotland | 0 | - | 4.63 | 21,613 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,258 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,752 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,951 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 489,292 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 712,583 |
| Countries that Beat Australia | 0 | - | 4.92 | 92,793 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,595 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,654 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,659 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,871 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,421 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,005 |
| Slavic Languages | 0 | - | 4.68 | 54,346 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,623 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,057 |
| France A-Z | 0 | - | 4.16 | 38,196 |
| French History Multiple Choice | 0 | - | 4.55 | 33,029 |
| History of Germany | 0 | - | 4.39 | 52,810 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 647,098 |
| Name that Greek Letter | 0 | - | 4.93 | 323,360 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,730 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,914 |
| Roman Names for Places | 0 | - | 4.62 | 58,264 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,079 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,455 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,812 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,243 |
| Switzerland A-Z | 0 | - | 4.45 | 25,639 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,018 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,749 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,893 |
| Malta Country Quiz | 0 | - | 4.81 | 31,043 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,137 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,125 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,315 |
| Word Scramble - U.S. States | 0 | - | 4.95 | 506,307 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 208,784 |
| Countries that Beat Canada | 0 | - | 4.90 | 96,090 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,030 |
| History of Russia Quiz | 0 | - | 4.47 | 31,913 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,720 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,731 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,222 |
| Movies Set in France | 0 | - | 4.26 | 13,118 |
| French Inventions | 0 | - | 4.08 | 13,896 |
| French Foods | 0 | - | 4.00 | 27,695 |
| History of Paris | 0 | - | 4.24 | 13,645 |
| Word Chain - Germany | 0 | - | 4.31 | 22,583 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,351 |
| The Trojan War | 0 | - | 4.83 | 39,710 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,772 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,876 |
| Italian Inventions | 0 | - | 3.81 | 18,437 |
| Famous Italian-Americans | 0 | - | 4.15 | 14,455 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,461 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,651 |
| Famous Nordic People | 0 | - | 4.34 | 20,103 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,824 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,303 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,614 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,219 |
| Geography of Spain | 0 | - | 4.59 | 22,069 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,911 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,339 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,526 |
| People on Money - England | 0 | - | 4.29 | 16,610 |
| Name a Valid English City | 0 | - | 4.19 | 16,718 |
| English First Names of the Middle Ages | 0 | - | 4.47 | 60,652 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,989 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,877 |
| Countries that Beat China | 0 | - | 4.86 | 115,753 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,233 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,033 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 117,221 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,762 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,444 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,400 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,499 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,458 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,764 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,634 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,950 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,363 |
| Europe Map Quiz | 0 | - | 5.00 | 4,761,222 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,257 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,924 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,206 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,223 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,543 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,419 |
| Capitals of French Regions | 0 | - | 4.45 | 16,065 |
| Kings of France Quiz | 0 | - | 4.20 | 32,732 |
| Capitals of German States | 0 | - | 4.74 | 28,948 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,325 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,588 |
