| European Countries by First 2 Letters | 0 | - | 4.95 | 526,691 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,957 |
| States of Germany | 0 | - | 4.96 | 150,388 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,128 |
| Regions of Italy | 0 | - | 4.92 | 74,875 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,918 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,521 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,423 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,343 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,829 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,466 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,388 |
| Departments of France | 0 | - | 4.93 | 52,966 |
| German Groups of Things | 0 | - | 4.46 | 38,326 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,393 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,887 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,490 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,477 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,073 |
| England or Wales? | 0 | - | 4.94 | 45,382 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,670 |
| Official European Union Languages | 0 | - | 4.97 | 237,135 |
| European Countries in their Native Language | 0 | - | 4.99 | 157,006 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,593 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,546 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,461 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,583 |
| Word Chain - France | 0 | - | 4.38 | 42,606 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,667 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,544 |
| Italian Foods | 0 | - | 4.31 | 72,267 |
| History of The Netherlands | 0 | - | 4.46 | 17,332 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,598 |
| British Groups of Things | 0 | - | 4.25 | 82,714 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,968 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,256 |
| Celtic Nations | 0 | - | 4.69 | 46,836 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,024 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,660 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,950 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,983 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 61,021 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,931 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 308,134 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 168,412 |
| Regions of France | 0 | - | 4.78 | 119,453 |
| France Immigration by Country | 0 | - | 4.72 | 76,028 |
| Famous Germans | 0 | - | 4.50 | 54,677 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,079 |
| Germany True or False? | 0 | - | 4.61 | 48,566 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,536 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,628 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,083 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,932 |
| Counties of England | 0 | - | 4.97 | 790,119 |
| The UK for Americans - True or False | 0 | - | 4.44 | 58,433 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,628 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,031 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,426 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,449 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,321 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,401 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,935 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,419 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,359 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,861 |
| Word Chain - Germany | 0 | - | 4.31 | 22,485 |
| Word Chain - Italy | 0 | - | 4.07 | 23,100 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,295 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,508 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,127 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,267 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,247 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,831 |
| Name a Valid English City | 0 | - | 4.19 | 16,642 |
| Champions League Winners | 0 | - | 4.92 | 997,560 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,474 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,163 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 36,523 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,842 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,719 |
| U.S. State Nicknames Quiz | 0 | - | 4.47 | 50,314 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,192 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,597 |
| Netherlands Country Quiz | 0 | - | 4.50 | 80,048 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,735 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,293 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,564 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,202 |
| Name a Valid African Country | 0 | - | 4.98 | 153,076 |
| Hispanic Last Names in the U.S. | 0 | - | 4.31 | 54,629 |
| 75 Americans Named John | 0 | - | 4.41 | 23,832 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,433 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 257,269 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,407 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,363 |
| Germany Country Quiz | 0 | - | 4.82 | 156,745 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,296 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,805 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,793 |
| Italy Country Quiz | 0 | - | 4.82 | 122,353 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,540 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,211 |
| The Mafia Quiz | 0 | - | 4.46 | 23,214 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,179 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,764 |
| Canary Islands | 0 | - | 4.61 | 17,416 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,091 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,218 |
| British Spellings | 0 | - | 4.07 | 99,278 |
| British to American Food Translation | 0 | - | 3.38 | 51,871 |
| British Acronyms | 0 | - | 4.39 | 45,647 |
| UK Immigration by Country | 0 | - | 4.94 | 139,811 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,404 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,496 |
| Geography of Scotland | 0 | - | 4.63 | 21,500 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,696 |
| Asian Last Names in the United States | 0 | - | 4.43 | 46,547 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,853 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,677 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,164 |
| U.S. Baby Boy Names by Decade | 0 | - | 4.55 | 486,855 |
| U.S. Baby Girl Names by Decade | 0 | - | 4.42 | 710,016 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,469 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,610 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,059 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,275 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,910 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,095 |
| Slavic Languages | 0 | - | 4.67 | 54,033 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,445 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,560 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,971 |
| France A-Z | 0 | - | 4.16 | 38,078 |
| French History Multiple Choice | 0 | - | 4.55 | 32,895 |
| History of Germany | 0 | - | 4.39 | 52,649 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,751 |
| Name that Greek Letter | 0 | - | 4.94 | 321,896 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,450 |
| Countries that Beat the Netherlands | 0 | - | 4.56 | 36,182 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,273 |
| Countries of Iberia in History with a Map | 0 | - | 4.87 | 41,195 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,603 |
| Switzerland A-Z | 0 | - | 4.45 | 25,529 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,483 |
| Malta Country Quiz | 0 | - | 4.81 | 30,870 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,923 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,709 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,722 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,936 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,257 |
| History of Russia Quiz | 0 | - | 4.49 | 31,804 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,593 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,997 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,111 |
| Famous French People | 0 | - | 4.12 | 28,012 |
| Movies Set in France | 0 | - | 4.26 | 13,084 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| French Foods | 0 | - | 4.00 | 27,603 |
| History of Paris | 0 | - | 4.24 | 13,622 |
| The Trojan War | 0 | - | 4.83 | 39,472 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,734 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,533 |
| History of Italy | 0 | - | 4.55 | 31,847 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,254 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,052 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,119 |
| Roman Emperors | 0 | - | 4.95 | 118,638 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,501 |
| Famous Nordic People | 0 | - | 4.34 | 19,892 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,398 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,754 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,550 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,010 |
| Geography of Spain | 0 | - | 4.59 | 21,984 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,479 |
| People on Money - England | 0 | - | 4.29 | 16,571 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,387 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,294 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,283 |
| Last Names by Country of Origin | 0 | - | 4.63 | 155,971 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,821 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,903 |
| Last Names in U.S. History #1 | 0 | - | 4.25 | 36,095 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,482 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,968 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,929 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,779 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,289 |
| European Geography By Letter - M | 0 | - | 4.61 | 129,034 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,764 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,687 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,066 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,385 |
| Europe Map Quiz | 0 | - | 5.00 | 4,735,251 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,651 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,214 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,667 |
| Capitals of French Regions | 0 | - | 4.45 | 15,995 |
| Kings of France Quiz | 0 | - | 4.20 | 32,580 |
