| European Countries by First 2 Letters | 0 | - | 4.95 | 526,138 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,808 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,285 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,161 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,178 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,692 |
| States of Germany | 0 | - | 4.96 | 149,884 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,963 |
| Regions of Italy | 0 | - | 4.92 | 74,623 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,764 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,193 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,075 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,957 |
| Departments of France | 0 | - | 4.93 | 52,716 |
| Famous Germans | 0 | - | 4.50 | 54,580 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,280 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,349 |
| England or Wales? | 0 | - | 4.94 | 45,289 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,544 |
| Official European Union Languages | 0 | - | 4.97 | 236,412 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,632 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,966 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,181 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,429 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,454 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,298 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,499 |
| The Mafia Quiz | 0 | - | 4.46 | 23,196 |
| History of The Netherlands | 0 | - | 4.46 | 17,303 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,544 |
| Monarchies of the World | 0 | - | 4.94 | 166,464 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,228 |
| Celtic Nations | 0 | - | 4.69 | 46,802 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,336 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,841 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,776 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,648 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,170 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,808 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,632 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,594 |
| European Geography By Letter - V | 0 | - | 4.43 | 91,997 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,261 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,564 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,653 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,676 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,550 |
| Regions of France | 0 | - | 4.78 | 119,103 |
| France A-Z | 0 | - | 4.16 | 38,044 |
| France Immigration by Country | 0 | - | 4.72 | 75,933 |
| German Groups of Things | 0 | - | 4.46 | 38,294 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,029 |
| Germany True or False? | 0 | - | 4.61 | 48,513 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,423 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,744 |
| Switzerland A-Z | 0 | - | 4.45 | 25,496 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,032 |
| Counties of England | 0 | - | 4.97 | 788,640 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,894 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,377 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,445 |
| Monarchies Bordering Monarchies | 0 | - | 4.85 | 59,939 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,232 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,149 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,744 |
| Famous French People | 0 | - | 4.12 | 27,902 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,040 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,599 |
| Famous Nordic People | 0 | - | 4.34 | 19,830 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,540 |
| UK Cities Map Quiz | 0 | - | 4.95 | 461,998 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,865 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,000 |
| People on Money - England | 0 | - | 4.29 | 16,560 |
| Champions League Winners | 0 | - | 4.92 | 995,539 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 65,953 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,112 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,182 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,497 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,667 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,397 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,162 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,405 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,847 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,227 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,441 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,117 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,894 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,274 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,484 |
| European Geography A-Z | 0 | - | 4.28 | 48,973 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,328 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,045 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,996 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,105 |
| Word Chain - France | 0 | - | 4.38 | 42,570 |
| Germany Country Quiz | 0 | - | 4.82 | 156,451 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,078 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,751 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,761 |
| Italy Country Quiz | 0 | - | 4.82 | 122,119 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,302 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,010 |
| Italian Foods | 0 | - | 4.30 | 72,136 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,902 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,553 |
| Canary Islands | 0 | - | 4.61 | 17,390 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,701 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,108 |
| British Spellings | 0 | - | 4.07 | 99,195 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| British Acronyms | 0 | - | 4.39 | 45,608 |
| UK Immigration by Country | 0 | - | 4.94 | 139,522 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,035 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,164 |
| Geography of Scotland | 0 | - | 4.63 | 21,469 |
| Famous Scottish People | 0 | - | 4.22 | 18,321 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,360 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,940 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,890 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,087 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,763 |
| Slavic Languages | 0 | - | 4.67 | 53,948 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,499 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,363 |
| French History Multiple Choice | 0 | - | 4.55 | 32,860 |
| History of Germany | 0 | - | 4.39 | 52,597 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,451 |
| Name that Greek Letter | 0 | - | 4.94 | 321,492 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,420 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,318 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,234 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,464 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,438 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,428 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,905 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,420 |
| Malta Country Quiz | 0 | - | 4.81 | 30,801 |
| Africa A-Z | 0 | - | 4.57 | 46,354 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,395 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,051 |
| Famous Russians | 0 | - | 4.16 | 23,714 |
| History of Russia Quiz | 0 | - | 4.49 | 31,781 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,552 |
| Movies Set in France | 0 | - | 4.26 | 13,068 |
| French Inventions | 0 | - | 4.08 | 13,862 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,560 |
| History of Paris | 0 | - | 4.24 | 13,612 |
| Word Chain - Germany | 0 | - | 4.31 | 22,472 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,422 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,978 |
| The Trojan War | 0 | - | 4.83 | 39,403 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,429 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,140 |
| Famous Irish People | 0 | - | 4.05 | 45,852 |
| History of Italy | 0 | - | 4.55 | 31,805 |
| Word Chain - Italy | 0 | - | 4.07 | 23,083 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,114 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,034 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,006 |
| Roman Emperors | 0 | - | 4.95 | 118,356 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,470 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,966 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,233 |
| Name a Valid English City | 0 | - | 4.19 | 16,624 |
| London A-Z | 0 | - | 4.10 | 40,627 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 33,781 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 276,999 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,704 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,794 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,971 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,596 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,920 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,962 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,107 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,587 |
| Capitals of French Regions | 0 | - | 4.45 | 15,980 |
| Kings of France Quiz | 0 | - | 4.20 | 32,545 |
| Capitals of German States | 0 | - | 4.74 | 28,799 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,084 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,325 |
| Ancient Greek Words | 0 | - | 4.92 | 110,607 |
| British to American Food Translation | 0 | - | 3.38 | 51,806 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,253 |
| Name Every Beatles Song | 0 | - | 4.97 | 233,920 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,242 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,795 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,364 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,128 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,537 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,036 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,674 |
| Middle East A-Z | 0 | - | 4.47 | 45,755 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,303,992 |
| Africa Map Quiz | 0 | - | 5.00 | 2,103,292 |
| Oceania Map Quiz | 0 | - | 4.98 | 634,782 |
| Australian Capitals | 0 | - | 4.92 | 62,586 |
| Canada A-Z | 0 | - | 4.73 | 32,634 |
