| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,364 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 531,926 |
| States of Germany | 0 | - | 4.95 | 154,103 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,574 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 216,060 |
| Countries Bordering Germany | 0 | - | 4.99 | 371,443 |
| Departments of France | 0 | - | 4.93 | 54,912 |
| Germany Country Quiz | 0 | - | 4.82 | 158,631 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,712 |
| England or Wales? | 0 | - | 4.94 | 45,907 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,604 |
| Official European Union Languages | 0 | - | 4.97 | 239,509 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,498 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 430,345 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,022 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,863 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 98,202 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,486 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,148 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,465 |
| The Trojan War | 0 | - | 4.83 | 39,942 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,731 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,505 |
| Roman Emperors | 0 | - | 4.95 | 120,957 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,240 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 42,009 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,912 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 312,300 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 175,133 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,661 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,637 |
| Wonderwall Lyrics | 0 | - | 4.25 | 74,022 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,959 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,608 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 360,390 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,478 |
| Celtic Nations | 0 | - | 4.61 | 47,070 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,029 |
| Champions League Winners | 0 | - | 4.92 | 1,013,888 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,595 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,649 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 88,332 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,763 |
| Federal Subjects of Russia | 0 | - | 4.95 | 149,052 |
| Austria Country Quiz | 0 | - | 4.57 | 59,990 |
| Countries Bordering France | 0 | - | 4.83 | 404,475 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,601 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,546 |
| Regions of Italy | 0 | - | 4.92 | 76,774 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,683 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,326 |
| Regions of Spain Quiz | 0 | - | 4.90 | 115,087 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,634 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,288 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,816 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,701 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 235,246 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 278,533 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 168,525 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,885 |
| Austria... or Australia? | 0 | - | 4.68 | 104,685 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,576 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,956 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,940 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,186 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,012 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,052 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,903 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,573 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,355 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,656 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,647 |
| UK Immigration by Country | 0 | - | 4.94 | 141,514 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,734 |
| British Monopoly Board | 0 | - | 4.52 | 41,244 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,520 |
| Name the English Monarchs | 0 | - | 4.91 | 505,595 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,728 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,711 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,708 |
| Word Scramble - European Countries | 0 | - | 4.73 | 142,171 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 116,351 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,822 |
| Slavic Languages | 0 | - | 4.67 | 54,628 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,123 |
| France A-Z | 0 | - | 4.16 | 38,313 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,091 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,408 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,603 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.40 | 82,732 |
| Geography of Germany | 0 | - | 4.35 | 17,251 |
| History of Germany | 0 | - | 4.39 | 52,952 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 650,910 |
| Name that Greek Letter | 0 | - | 4.93 | 324,736 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,182 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,798 |
| Counties of Ireland | 0 | - | 4.92 | 196,904 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,710 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,185 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,064 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,134 |
| Ancient Roman Trivia #2 | 0 | - | 4.60 | 44,150 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,169 |
| Roman Names for Places | 0 | - | 4.62 | 58,630 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,755 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,594 |
| Most Common First Names in Spain | 0 | - | 4.32 | 54,947 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,870 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,250 |
| Switzerland A-Z | 0 | - | 4.45 | 25,747 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,921 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,077 |
| Countries that Visit the UK the Most | 0 | - | 4.87 | 75,700 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,061 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 47,022 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,086 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,978 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,206 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,680 |
| History of Russia Quiz | 0 | - | 4.47 | 31,988 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,838 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,315 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,096 |
| Most Popular Baby Boy Names in Germany | 0 | - | 4.34 | 67,222 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,219 |
| Olympian Gods Quiz | 0 | - | 4.96 | 503,148 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 127,216 |
| Famous Irish People | 0 | - | 4.05 | 46,054 |
| History of Italy | 0 | - | 4.55 | 32,117 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,231 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,790 |
| Most Common Last Names in Sweden | 0 | - | 4.50 | 15,468 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,397 |
| Geography of Spain | 0 | - | 4.59 | 22,156 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,447 |
| British Geography A-Z | 0 | - | 4.42 | 19,595 |
| Imagine Lyrics | 0 | - | 4.53 | 43,507 |
| A Quiz About The Beatles | 0 | - | 4.56 | 48,279 |
| Sherlock Holmes Quiz | 0 | - | 4.49 | 26,714 |
| London A-Z | 0 | - | 4.10 | 40,864 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,708 |
| European Geography By Letter - B #1 | 0 | - | 4.62 | 121,089 |
| European Geography By Letter - C | 0 | - | 4.43 | 123,138 |
| European Geography By Letter - D | 0 | - | 4.50 | 110,095 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,750 |
| European Geography By Letter - M | 0 | - | 4.69 | 132,101 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,872 |
| European Geography By Letter - R | 0 | - | 4.43 | 94,388 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,605 |
| European Geography By Letter - T | 0 | - | 4.41 | 83,306 |
| Europe Map Quiz | 0 | - | 5.00 | 4,781,871 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,461 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,117 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,413 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,382 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 101,221 |
| Four Letter European Geography #1 | 0 | - | 4.41 | 28,451 |
| Four Letter European Geography #2 | 0 | - | 4.54 | 20,670 |
| Capitals of French Regions | 0 | - | 4.45 | 16,158 |
| Regions of France | 0 | - | 4.70 | 121,810 |
| France Immigration by Country | 0 | - | 4.70 | 76,847 |
| Kings of France Quiz | 0 | - | 4.20 | 32,887 |
| Famous Germans | 0 | - | 4.50 | 55,705 |
| German Groups of Things | 0 | - | 4.47 | 38,604 |
| Capitals of German States | 0 | - | 4.74 | 29,043 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,511 |
| Germany True or False? | 0 | - | 4.61 | 48,977 |
| German History A-Z | 0 | - | 4.49 | 24,870 |
| German Inventions | 0 | - | 3.91 | 30,277 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,675 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,361 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,558 |
| Ancient Greek Words | 0 | - | 4.93 | 112,289 |
| Famous Italians by Clue | 0 | - | 4.45 | 90,249 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,238 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,429 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,654 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,385 |
| British to American Food Translation | 0 | - | 3.38 | 52,019 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,682 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,544 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,772 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,776 |
| Beatles Lyrics First Names | 0 | - | 4.36 | 40,112 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,979 |
| Elton John Quiz | 0 | - | 4.49 | 18,513 |
| Famous Scottish People | 0 | - | 4.22 | 18,430 |
| Asian Countries by First 2 Letters | 0 | - | 4.92 | 280,367 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 269,096 |
| Oceania Map Quiz | 0 | - | 4.98 | 658,229 |
| Australian Capitals | 0 | - | 4.92 | 62,811 |
| European Physical Geography | 0 | - | 4.26 | 33,579 |
| Geography of Russia | 0 | - | 4.57 | 21,580 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 42,086 |
| History of Austria | 0 | - | 4.70 | 17,959 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,160 |
| France Country Quiz | 0 | - | 4.70 | 135,485 |
| Biggest French Empire Countries | 0 | - | 4.49 | 65,320 |
| Geography of the French Empire | 0 | - | 4.45 | 27,201 |
| The French Revolution | 0 | - | 4.47 | 24,120 |
