| States of Germany | 0 | - | 4.95 | 155,069 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,867 |
| German Groups of Things | 0 | - | 4.47 | 38,684 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 533,285 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,777 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,535 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,698 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 217,645 |
| Regions of Italy | 0 | - | 4.92 | 77,337 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,977 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,690 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,971 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,136 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,529 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,483 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,419 |
| Departments of France | 0 | - | 4.93 | 55,488 |
| Famous Germans | 0 | - | 4.50 | 55,903 |
| Germany True or False? | 0 | - | 4.61 | 49,093 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,800 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 104,003 |
| England or Wales? | 0 | - | 4.94 | 46,096 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,892 |
| Official European Union Languages | 0 | - | 4.97 | 240,476 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,897 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,615 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,326 |
| Word Chain - Germany | 0 | - | 4.31 | 22,704 |
| Europe Geography Decoder | 0 | - | 4.87 | 70,415 |
| Word Chain - France | 0 | - | 4.38 | 42,976 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,851 |
| Italian Foods | 0 | - | 4.30 | 73,433 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,121 |
| British Groups of Things | 0 | - | 4.26 | 83,052 |
| Celtic Nations | 0 | - | 4.61 | 47,131 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,596 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,268 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,825 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,538 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,494 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.83 | 88,179 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,367 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,808 |
| Regions of France | 0 | - | 4.70 | 122,524 |
| France Immigration by Country | 0 | - | 4.70 | 77,046 |
| Capitals of German States | 0 | - | 4.74 | 29,103 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,604 |
| History of Germany | 0 | - | 4.39 | 53,011 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,623 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,590 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,987 |
| Most Common First Names in Spain | 0 | - | 4.33 | 55,414 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,521 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 70,051 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,118 |
| Counties of England | 0 | - | 4.97 | 804,823 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,865 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,117 |
| Add A Letter - Make a European City | 0 | - | 4.88 | 23,544 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,825 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,287 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,941 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,362 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 82,246 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,060 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,879 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,074 |
| Word Chain - Italy | 0 | - | 4.07 | 23,237 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,986 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,702 |
| Counties of England Map Quiz | 0 | - | 4.97 | 309,381 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,428 |
| Name a Valid English City | 0 | - | 4.19 | 16,849 |
| Champions League Winners | 0 | - | 4.92 | 1,018,777 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 136,373 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,642 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,846 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,457 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,507 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 176,031 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,966 |
| European Geographic Groups of Four | 0 | - | 4.56 | 20,562 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,675 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,213 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,028 |
| Famous French People | 0 | - | 4.05 | 36,203 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,155 |
| Germany Country Quiz | 0 | - | 4.82 | 159,176 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,317 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,305 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,508 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,303 |
| The Mafia Quiz | 0 | - | 4.46 | 23,456 |
| History of The Netherlands | 0 | - | 4.46 | 17,582 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,662 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,101 |
| Canary Islands | 0 | - | 4.62 | 17,551 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,194 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 30,193 |
| British Spellings | 0 | - | 4.06 | 99,643 |
| British to American Food Translation | 0 | - | 3.38 | 52,067 |
| British Acronyms | 0 | - | 4.40 | 45,997 |
| UK Immigration by Country | 0 | - | 4.94 | 141,959 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 141,395 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,141 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 32,242 |
| Geography of Scotland | 0 | - | 4.63 | 21,841 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 132,628 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 111,655 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 98,013 |
| Name a Valid Asian Country | 0 | - | 4.98 | 122,029 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 93,670 |
| Name a Valid African Country | 0 | - | 4.98 | 155,379 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,814 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,744 |
| Word Scramble - European Countries | 0 | - | 4.72 | 142,500 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 124,735 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,095 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,343 |
| Slavic Languages | 0 | - | 4.67 | 54,809 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,690 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,172 |
| France A-Z | 0 | - | 4.16 | 38,371 |
| French History Multiple Choice | 0 | - | 4.55 | 33,287 |
| Geography of Germany | 0 | - | 4.36 | 17,453 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,414 |
| Name that Greek Letter | 0 | - | 4.93 | 325,420 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,765 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,673 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 87,081 |
| Switzerland A-Z | 0 | - | 4.45 | 25,805 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,179 |
| Malta Country Quiz | 0 | - | 4.81 | 31,277 |
| Topological Map of Asia Quiz | 0 | - | 4.83 | 20,593 |
| Topological Map of Africa Quiz | 0 | - | 4.81 | 21,702 |
| Countries that Beat the United States | 0 | - | 4.93 | 169,020 |
| Countries that Beat Canada | 0 | - | 4.90 | 99,173 |
| Top European Languages on a Map | 0 | - | 4.77 | 133,060 |
| History of Russia Quiz | 0 | - | 4.47 | 32,033 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,916 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,819 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,478 |
| Movies Set in France | 0 | - | 4.26 | 13,165 |
| French Inventions | 0 | - | 4.10 | 13,933 |
| French Foods | 0 | - | 4.00 | 27,789 |
| History of Paris | 0 | - | 4.24 | 13,687 |
| The Trojan War | 0 | - | 4.83 | 40,126 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,368 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,136 |
| History of Italy | 0 | - | 4.55 | 32,201 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,579 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,189 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,736 |
| Roman Emperors | 0 | - | 4.95 | 121,529 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Famous Nordic People | 0 | - | 4.34 | 20,364 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,507 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,324 |
| Countries that Beat Portugal | 0 | - | 4.86 | 60,049 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,652 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,485 |
| Geography of Spain | 0 | - | 4.59 | 22,303 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,586 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,555 |
| People on Money - England | 0 | - | 4.30 | 21,320 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 281,149 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,624 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,768 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,494 |
| European Geography By Letter - A | 0 | - | 4.52 | 148,574 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 122,018 |
| European Geography By Letter - C | 0 | - | 4.44 | 124,582 |
| European Geography By Letter - D | 0 | - | 4.49 | 119,141 |
| European Geography By Letter - L | 0 | - | 4.52 | 115,517 |
| European Geography By Letter - M | 0 | - | 4.70 | 133,051 |
| European Geography By Letter - N | 0 | - | 4.44 | 102,444 |
| European Geography By Letter - R | 0 | - | 4.43 | 95,017 |
| European Geography By Letter - V | 0 | - | 4.43 | 94,287 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,926 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,530 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,671 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,647 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,805 |
| Capitals of French Regions | 0 | - | 4.45 | 16,217 |
| Kings of France Quiz | 0 | - | 4.22 | 32,978 |
| German Loan Words | 0 | - | 4.27 | 141,306 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,765 |
| Ancient Greek Words | 0 | - | 4.93 | 112,742 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,487 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,618 |
| Name Every Beatles Song | 0 | - | 4.97 | 238,966 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 293,067 |
| Famous Scottish People | 0 | - | 4.22 | 18,446 |
| Asia Geography Quiz #1 | 0 | - | 4.70 | 53,701 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,787 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,393 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 33,122 |
