| Cantons of Switzerland | 0 | - | 4.98 | 50,623 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,284 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,031 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,552 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,570 |
| Save Europeans by Guessing Countries | 0 | - | 4.83 | 210,584 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,181 |
| States of Germany | 0 | - | 4.96 | 150,799 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,258 |
| Regions of Italy | 0 | - | 4.92 | 75,039 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,031 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,955 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,580 |
| Departments of France | 0 | - | 4.93 | 53,138 |
| Famous Germans | 0 | - | 4.50 | 54,783 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,773 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,415 |
| Switzerland A-Z | 0 | - | 4.45 | 25,557 |
| England or Wales? | 0 | - | 4.94 | 45,446 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 68,785 |
| Official European Union Languages | 0 | - | 4.97 | 237,432 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,186 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,105 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,373 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,492 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,695 |
| The Mafia Quiz | 0 | - | 4.46 | 23,230 |
| History of The Netherlands | 0 | - | 4.46 | 17,350 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,315 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,643 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,293 |
| Celtic Nations | 0 | - | 4.69 | 46,857 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,609 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,072 |
| 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 | 129,204 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,978 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,749 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,192 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,509 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,734 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,004 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,065 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,989 |
| Regions of France | 0 | - | 4.78 | 119,726 |
| France A-Z | 0 | - | 4.16 | 38,101 |
| France Immigration by Country | 0 | - | 4.72 | 76,119 |
| German Groups of Things | 0 | - | 4.46 | 38,360 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,149 |
| Germany True or False? | 0 | - | 4.61 | 48,622 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,697 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,655 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,990 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,122 |
| Counties of England | 0 | - | 4.97 | 791,608 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,689 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,472 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 351,826 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,656 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,474 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,930 |
| Famous French People | 0 | - | 4.12 | 28,099 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,597 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,045 |
| Famous Nordic People | 0 | - | 4.34 | 19,945 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,559 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,955 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,245 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,489 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,489 |
| People on Money - England | 0 | - | 4.29 | 16,581 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,466 |
| Champions League Winners | 0 | - | 4.92 | 999,489 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,140 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,258 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,788 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,599 |
| 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 | 101,667 |
| 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 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,379 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,609 |
| European Geography A-Z | 0 | - | 4.28 | 49,083 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,396 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,027 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,818 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,567 |
| Word Chain - France | 0 | - | 4.38 | 42,654 |
| Germany Country Quiz | 0 | - | 4.82 | 156,995 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,448 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,844 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,821 |
| Italy Country Quiz | 0 | - | 4.82 | 122,551 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,717 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,355 |
| Italian Foods | 0 | - | 4.31 | 72,384 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,299 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,920 |
| Canary Islands | 0 | - | 4.61 | 17,428 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,305 |
| British Spellings | 0 | - | 4.07 | 99,332 |
| British Groups of Things | 0 | - | 4.25 | 82,744 |
| British Acronyms | 0 | - | 4.39 | 45,676 |
| UK Immigration by Country | 0 | - | 4.94 | 139,995 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,984 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,696 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,679 |
| Geography of Scotland | 0 | - | 4.63 | 21,523 |
| Famous Scottish People | 0 | - | 4.22 | 18,347 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,014 |
| 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 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,257 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,043 |
| Slavic Languages | 0 | - | 4.68 | 54,106 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,603 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,494 |
| French History Multiple Choice | 0 | - | 4.55 | 32,923 |
| History of Germany | 0 | - | 4.39 | 52,693 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 643,769 |
| Name that Greek Letter | 0 | - | 4.93 | 322,249 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,501 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,562 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,314 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,515 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,732 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,521 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,955 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,548 |
| Malta Country Quiz | 0 | - | 4.81 | 30,903 |
| Africa A-Z | 0 | - | 4.57 | 46,462 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 267,076 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,460 |
| Famous Russians | 0 | - | 4.16 | 23,757 |
| History of Russia Quiz | 0 | - | 4.49 | 31,828 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,619 |
| 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 | 46,777 |
| History of Paris | 0 | - | 4.24 | 13,627 |
| Word Chain - Germany | 0 | - | 4.31 | 22,511 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,651 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,061 |
| The Trojan War | 0 | - | 4.83 | 39,524 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,985 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,889 |
| Famous Irish People | 0 | - | 4.05 | 45,894 |
| History of Italy | 0 | - | 4.55 | 31,875 |
| Word Chain - Italy | 0 | - | 4.07 | 23,128 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,368 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,062 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,208 |
| Roman Emperors | 0 | - | 4.95 | 118,996 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,538 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,061 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,274 |
| Name a Valid English City | 0 | - | 4.19 | 16,660 |
| London A-Z | 0 | - | 4.10 | 40,680 |
| Asian Cities A-Z by Clue | 0 | - | 4.52 | 35,000 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,932 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,888 |
| Europe Map Quiz | 0 | - | 5.00 | 4,741,420 |
| 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 | 61,074 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,702 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,082 |
| Capitals of French Regions | 0 | - | 4.45 | 16,011 |
| Kings of France Quiz | 0 | - | 4.20 | 32,608 |
| 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 | 497,734 |
| Ancient Greek Words | 0 | - | 4.93 | 110,990 |
| British to American Food Translation | 0 | - | 3.38 | 51,895 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,335 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,758 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,991 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,919 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,490 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,237 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,669 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,158 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,799 |
| Middle East A-Z | 0 | - | 4.47 | 45,881 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,308,589 |
| Africa Map Quiz | 0 | - | 5.00 | 2,108,768 |
| Oceania Map Quiz | 0 | - | 4.98 | 637,546 |
| Australian Capitals | 0 | - | 4.92 | 62,641 |
| Canada A-Z | 0 | - | 4.73 | 32,703 |
| European Physical Geography | 0 | - | 4.26 | 33,410 |
| Geography of Russia | 0 | - | 4.57 | 21,461 |
| Russian History A-Z | 0 | - | 4.38 | 31,313 |
