| States of Germany | 0 | - | 4.96 | 151,894 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,877 |
| German Groups of Things | 0 | - | 4.46 | 38,435 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 528,680 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,283 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,871 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,904 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 212,182 |
| Regions of Italy | 0 | - | 4.92 | 75,536 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 51,855 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,625 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,999 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 232,582 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,270 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,660 |
| Departments of France | 0 | - | 4.93 | 53,774 |
| Famous Germans | 0 | - | 4.50 | 55,167 |
| Germany True or False? | 0 | - | 4.61 | 48,738 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,515 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,064 |
| England or Wales? | 0 | - | 4.94 | 45,596 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,993 |
| Official European Union Languages | 0 | - | 4.97 | 238,112 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,602 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,476 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,715 |
| Word Chain - Germany | 0 | - | 4.31 | 22,562 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,877 |
| Word Chain - France | 0 | - | 4.38 | 42,740 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,058 |
| Italian Foods | 0 | - | 4.30 | 72,636 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,754 |
| British Groups of Things | 0 | - | 4.25 | 82,831 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,017 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,357 |
| Celtic Nations | 0 | - | 4.69 | 46,908 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,206 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,862 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,326,092 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,151 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,179 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,241 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,957 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 170,580 |
| Regions of France | 0 | - | 4.75 | 120,399 |
| France Immigration by Country | 0 | - | 4.70 | 76,399 |
| Capitals of German States | 0 | - | 4.74 | 28,930 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,279 |
| History of Germany | 0 | - | 4.39 | 52,778 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,869 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,284 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,225 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,584 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,233 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,632 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,997 |
| Counties of England | 0 | - | 4.97 | 794,741 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,583 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 354,154 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,274 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,926 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,893 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 77,933 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,693 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,374 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,141 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,537 |
| Word Chain - Italy | 0 | - | 4.07 | 23,148 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,010 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,546 |
| Counties of England Map Quiz | 0 | - | 4.97 | 307,015 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,327 |
| Name a Valid English City | 0 | - | 4.19 | 16,699 |
| Champions League Winners | 0 | - | 4.92 | 1,003,665 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,029 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,388 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,463 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,042 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,561 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,659 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,077 |
| Name a Valid African Country | 0 | - | 4.98 | 153,747 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,180 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,609 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 259,909 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,320 |
| Famous French People | 0 | - | 4.06 | 34,847 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,444 |
| Germany Country Quiz | 0 | - | 4.82 | 157,569 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,859 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,936 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,875 |
| Italy Country Quiz | 0 | - | 4.82 | 123,184 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,120 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,812 |
| The Mafia Quiz | 0 | - | 4.46 | 23,297 |
| History of The Netherlands | 0 | - | 4.46 | 17,406 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,652 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,362 |
| Canary Islands | 0 | - | 4.62 | 17,459 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,705 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,597 |
| British Spellings | 0 | - | 4.06 | 99,403 |
| British to American Food Translation | 0 | - | 3.38 | 51,943 |
| British Acronyms | 0 | - | 4.39 | 45,756 |
| UK Immigration by Country | 0 | - | 4.94 | 140,668 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,440 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,217 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,662 |
| Geography of Scotland | 0 | - | 4.63 | 21,590 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,729 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,684 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,484 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,751 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,555 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,642 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,485 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 114,358 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,343 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,765 |
| Slavic Languages | 0 | - | 4.68 | 54,267 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,615 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,617 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,044 |
| France A-Z | 0 | - | 4.16 | 38,171 |
| French History Multiple Choice | 0 | - | 4.55 | 33,001 |
| Geography of Germany | 0 | - | 4.35 | 17,163 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,057 |
| Name that Greek Letter | 0 | - | 4.93 | 323,077 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,576 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 60,913 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,419 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,090 |
| Switzerland A-Z | 0 | - | 4.45 | 25,620 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,689 |
| Malta Country Quiz | 0 | - | 4.81 | 31,001 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,086 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,858 |
| Countries that Beat the United States | 0 | - | 4.93 | 166,527 |
| Countries that Beat Canada | 0 | - | 4.90 | 87,284 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,844 |
| History of Russia Quiz | 0 | - | 4.49 | 31,879 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,694 |
| Countries that Beat Russia | 0 | - | 4.81 | 82,455 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,192 |
| Movies Set in France | 0 | - | 4.26 | 13,113 |
| French Inventions | 0 | - | 4.08 | 13,890 |
| French Foods | 0 | - | 4.00 | 27,669 |
| History of Paris | 0 | - | 4.24 | 13,637 |
| The Trojan War | 0 | - | 4.83 | 39,644 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,528 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,518 |
| History of Italy | 0 | - | 4.55 | 31,935 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,633 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,086 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,415 |
| Roman Emperors | 0 | - | 4.95 | 119,648 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,611 |
| Famous Nordic People | 0 | - | 4.34 | 20,063 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,375 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,654 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,141 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,610 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,163 |
| Geography of Spain | 0 | - | 4.59 | 22,049 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,517 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,008 |
| People on Money - England | 0 | - | 4.29 | 16,601 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 278,661 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,686 |
| Solve the Secret Capital City | 0 | - | 4.80 | 163,398 |
| Add A Letter - Make a Capital City | 0 | - | 4.46 | 32,402 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,935 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,098 |
| European Geography By Letter - A | 0 | - | 4.51 | 144,981 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 112,604 |
| European Geography By Letter - C | 0 | - | 4.46 | 113,340 |
| European Geography By Letter - D | 0 | - | 4.50 | 108,075 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,138 |
| European Geography By Letter - M | 0 | - | 4.67 | 130,139 |
| European Geography By Letter - P #1 | 0 | - | 4.80 | 97,223 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,561 |
| European Geography By Letter - R | 0 | - | 4.42 | 93,245 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,800 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,133 |
| Europe Map Quiz | 0 | - | 5.00 | 4,755,219 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,364 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,357 |
| Capitals of French Regions | 0 | - | 4.45 | 16,036 |
| Kings of France Quiz | 0 | - | 4.20 | 32,682 |
| German Loan Words | 0 | - | 4.27 | 135,723 |
| Olympian Gods Quiz | 0 | - | 4.96 | 499,529 |
| Ancient Greek Words | 0 | - | 4.93 | 111,345 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,442 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,409 |
| Name Every Beatles Song | 0 | - | 4.97 | 235,625 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 291,450 |
| Famous Scottish People | 0 | - | 4.22 | 18,387 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,471 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,493 |
