| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,697 |
| States of Germany | 0 | - | 4.96 | 150,804 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,261 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,288 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,149 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,585 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,045 |
| Regions of Italy | 0 | - | 4.92 | 75,039 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,032 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,961 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,624 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,599 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,785 |
| Official European Union Languages | 0 | - | 4.97 | 237,434 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,188 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,108 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,414 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,695 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,643 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,654 |
| History of Italy | 0 | - | 4.55 | 31,875 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,369 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,538 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,061 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,295 |
| Celtic Nations | 0 | - | 4.69 | 46,857 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,033 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,005 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,068 |
| Geography of Germany | 0 | - | 4.35 | 17,121 |
| History of Germany | 0 | - | 4.39 | 52,693 |
| Counties of England | 0 | - | 4.97 | 791,626 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,836 |
| Regions of France | 0 | - | 4.78 | 119,730 |
| France Immigration by Country | 0 | - | 4.72 | 76,120 |
| Famous Germans | 0 | - | 4.50 | 54,783 |
| German Groups of Things | 0 | - | 4.46 | 38,360 |
| Germany True or False? | 0 | - | 4.61 | 48,623 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,656 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,774 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,991 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,122 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,690 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,762 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,992 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,553 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,476 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,258 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,570 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,182 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,931 |
| History of Austria | 0 | - | 4.70 | 17,785 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,598 |
| Geography of the French Empire | 0 | - | 4.45 | 26,978 |
| The French Revolution | 0 | - | 4.46 | 23,844 |
| France Multiple Choice | 0 | - | 4.38 | 40,670 |
| History of France | 0 | - | 4.59 | 56,470 |
| The Vikings! | 0 | - | 4.46 | 28,273 |
| The Portuguese Empire | 0 | - | 4.58 | 12,016 |
| American to British Word Translation | 0 | - | 4.13 | 137,807 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,783 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,245 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,489 |
| Champions League Winners | 0 | - | 4.92 | 999,502 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,401 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,047 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,825 |
| Departments of France | 0 | - | 4.93 | 53,138 |
| Germany Country Quiz | 0 | - | 4.82 | 156,998 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,711 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,415 |
| England or Wales? | 0 | - | 4.94 | 45,447 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,019 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,492 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,620 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,193 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,647 |
| Slavic Languages | 0 | - | 4.68 | 54,106 |
| Word Chain - France | 0 | - | 4.38 | 42,655 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,503 |
| Italian Foods | 0 | - | 4.31 | 72,385 |
| The Mafia Quiz | 0 | - | 4.46 | 23,230 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,314 |
| Canary Islands | 0 | - | 4.61 | 17,428 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,315 |
| British Spellings | 0 | - | 4.07 | 99,332 |
| British Groups of Things | 0 | - | 4.25 | 82,744 |
| British Acronyms | 0 | - | 4.39 | 45,676 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,984 |
| Geography of Scotland | 0 | - | 4.63 | 21,523 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,043 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,603 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,098 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,772 |
| Name that Greek Letter | 0 | - | 4.93 | 322,250 |
| History of Spain | 0 | - | 4.29 | 21,033 |
| Languages of Spain | 0 | - | 4.36 | 23,209 |
| British to American Word Translation | 0 | - | 3.74 | 254,857 |
| British Foods by Description | 0 | - | 3.94 | 48,280 |
| British and American Word Differences | 0 | - | 2.64 | 46,809 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,534 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,548 |
| Best-Selling British Musical Acts | 0 | - | 4.49 | 46,750 |
| Bridges of London | 0 | - | 4.17 | 10,069 |
| British Sport Trivia | 0 | - | 4.37 | 20,393 |
| Famous Welsh People | 0 | - | 4.21 | 9,788 |
| Malta Country Quiz | 0 | - | 4.81 | 30,903 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,080 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,461 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,621 |
| Famous French People | 0 | - | 4.12 | 28,099 |
| Movies Set in France | 0 | - | 4.26 | 13,091 |
| French Inventions | 0 | - | 4.08 | 13,872 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,779 |
| History of Paris | 0 | - | 4.24 | 13,627 |
| Word Chain - Germany | 0 | - | 4.31 | 22,511 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,712 |
| The Trojan War | 0 | - | 4.83 | 39,524 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,985 |
| Word Chain - Italy | 0 | - | 4.07 | 23,128 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,062 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,210 |
| Roman Emperors | 0 | - | 4.95 | 118,997 |
| Famous Nordic People | 0 | - | 4.34 | 19,945 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,559 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,672 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,274 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,490 |
| People on Money - England | 0 | - | 4.29 | 16,581 |
| Name a Valid English City | 0 | - | 4.19 | 16,660 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,466 |
| A Quiz About The Beatles | 0 | - | 4.56 | 47,676 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,936 |
| Australian Capitals | 0 | - | 4.92 | 62,641 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,609 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,073 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,041 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,921 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,386 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,205 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,980 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,749 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,205 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,510 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,444 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,088 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,724 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,036 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,075 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,737 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,706 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,085 |
| Capitals of French Regions | 0 | - | 4.45 | 16,011 |
| Capitals of German States | 0 | - | 4.74 | 28,881 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,170 |
| Olympian Gods Quiz | 0 | - | 4.96 | 497,735 |
| Ancient Greek Words | 0 | - | 4.93 | 110,990 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,336 |
| Imagine Lyrics | 0 | - | 4.53 | 43,118 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,830 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,554 |
| European Physical Geography | 0 | - | 4.26 | 33,410 |
| Geography of Russia | 0 | - | 4.57 | 21,461 |
| Slovakia... or Slovenia? | 0 | - | 4.69 | 41,833 |
| German History A-Z | 0 | - | 4.49 | 24,491 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 434,714 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,767 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,789 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,374 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,247 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,438 |
| Beatles Lyrics First Names | 0 | - | 4.38 | 34,538 |
| Beatles Songs by Synonyms | 0 | - | 4.74 | 40,422 |
| Elton John Quiz | 0 | - | 4.48 | 18,429 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,251 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,014 |
| Geography of the British Empire | 0 | - | 4.48 | 39,554 |
| Champions League Top 4 | 0 | - | 4.77 | 134,630 |
| East Asia Map Quiz | 0 | - | 4.99 | 1,443,057 |
| Asia Map Quiz | 0 | - | 4.99 | 909,709 |
| Countries of Africa | 0 | - | 5.00 | 2,516,925 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,142 |
| African East Coast | 0 | - | 4.96 | 95,384 |
| Western Africa Map Quiz | 0 | - | 4.97 | 73,248 |
| Oceanian Capitals - Map Quiz | 0 | - | 4.95 | 50,082 |
| Australia Map Quiz | 0 | - | 4.94 | 343,027 |
| United States Map Quiz | 0 | - | 4.98 | 4,146,438 |
| Mediterranean Countries Quiz | 0 | - | 4.99 | 210,798 |
| Countries with Territorial Claims in Antarctica | 0 | - | 4.94 | 92,409 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,655 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,966 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,378 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,803 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,046 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,668 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,624 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,314 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,038 |
