| Cantons of Switzerland | 0 | - | 4.98 | 50,171 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,354 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,851 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,332 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,262 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,483 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,793 |
| States of Germany | 0 | - | 4.96 | 150,056 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,016 |
| Regions of Italy | 0 | - | 4.92 | 74,727 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,814 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,352 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,555 |
| Departments of France | 0 | - | 4.93 | 52,827 |
| Famous Germans | 0 | - | 4.50 | 54,614 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,509 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,368 |
| Switzerland A-Z | 0 | - | 4.45 | 25,508 |
| England or Wales? | 0 | - | 4.94 | 45,318 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,581 |
| Official European Union Languages | 0 | - | 4.97 | 236,533 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,703 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,203 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,223 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,450 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,540 |
| The Mafia Quiz | 0 | - | 4.46 | 23,206 |
| History of The Netherlands | 0 | - | 4.46 | 17,311 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,152 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,568 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,239 |
| Celtic Nations | 0 | - | 4.69 | 46,812 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,411 |
| European Geography By Letter - B #1 | 0 | - | 4.68 | 110,912 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,859 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,716 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,220 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,899 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,674 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,629 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,027 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,309 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,599 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,826 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,888 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,962 |
| Regions of France | 0 | - | 4.78 | 119,254 |
| France A-Z | 0 | - | 4.16 | 38,057 |
| France Immigration by Country | 0 | - | 4.72 | 75,965 |
| German Groups of Things | 0 | - | 4.46 | 38,306 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,048 |
| Germany True or False? | 0 | - | 4.61 | 48,535 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,465 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,828 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,045 |
| Counties of England | 0 | - | 4.97 | 789,198 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,962 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,387 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,932 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,328 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,215 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,006 |
| Famous French People | 0 | - | 4.12 | 27,947 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,130 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,684 |
| Famous Nordic People | 0 | - | 4.34 | 19,855 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,545 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,159 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,908 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,090 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,463 |
| People on Money - England | 0 | - | 4.29 | 16,564 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,329 |
| Champions League Winners | 0 | - | 4.92 | 996,359 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,000 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,147 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,520 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,699 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,406 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,219 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,642 |
| European Geography By Letter - H | 0 | - | 4.30 | 94,906 |
| European Geography By Letter - G | 0 | - | 4.25 | 101,281 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,494 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,171 |
| European Geography By Letter - O | 0 | - | 4.28 | 61,920 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,297 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,511 |
| European Geography A-Z | 0 | - | 4.28 | 49,003 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,539 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,205 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,173 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,191 |
| Word Chain - France | 0 | - | 4.38 | 42,582 |
| Germany Country Quiz | 0 | - | 4.82 | 156,547 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,147 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,775 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,771 |
| Italy Country Quiz | 0 | - | 4.82 | 122,206 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,385 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,080 |
| Italian Foods | 0 | - | 4.31 | 72,189 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,951 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,643 |
| Canary Islands | 0 | - | 4.61 | 17,402 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,869 |
| British Spellings | 0 | - | 4.07 | 99,204 |
| British Groups of Things | 0 | - | 4.25 | 82,670 |
| British Acronyms | 0 | - | 4.39 | 45,619 |
| UK Immigration by Country | 0 | - | 4.94 | 139,641 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,946 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,146 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,284 |
| Geography of Scotland | 0 | - | 4.63 | 21,479 |
| Famous Scottish People | 0 | - | 4.22 | 18,326 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,498 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,599 |
| Word Scramble - European Countries | 0 | - | 4.70 | 140,990 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,048 |
| Name a Major European City A-Z | 0 | - | 4.33 | 49,128 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,828 |
| Slavic Languages | 0 | - | 4.67 | 53,985 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,513 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,398 |
| French History Multiple Choice | 0 | - | 4.55 | 32,879 |
| History of Germany | 0 | - | 4.39 | 52,614 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,927 |
| Name that Greek Letter | 0 | - | 4.94 | 321,671 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,429 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,374 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,246 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,474 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,496 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,444 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,916 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,445 |
| Malta Country Quiz | 0 | - | 4.81 | 30,827 |
| Africa A-Z | 0 | - | 4.57 | 46,371 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,534 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,134 |
| Famous Russians | 0 | - | 4.16 | 23,728 |
| History of Russia Quiz | 0 | - | 4.49 | 31,794 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,565 |
| Movies Set in France | 0 | - | 4.26 | 13,073 |
| French Inventions | 0 | - | 4.08 | 13,865 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,601 |
| History of Paris | 0 | - | 4.24 | 13,616 |
| Word Chain - Germany | 0 | - | 4.31 | 22,475 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,460 |
| Ancient Greece A-Z | 0 | - | 4.60 | 22,984 |
| The Trojan War | 0 | - | 4.83 | 39,428 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,538 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,290 |
| Famous Irish People | 0 | - | 4.05 | 45,855 |
| History of Italy | 0 | - | 4.55 | 31,815 |
| Word Chain - Italy | 0 | - | 4.07 | 23,088 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,163 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,041 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,046 |
| Roman Emperors | 0 | - | 4.95 | 118,491 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,482 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,981 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,240 |
| Name a Valid English City | 0 | - | 4.19 | 16,630 |
| London A-Z | 0 | - | 4.10 | 40,637 |
| Asian Cities A-Z by Clue | 0 | - | 4.53 | 34,233 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,103 |
| Major non-NATO U.S. Allies | 0 | - | 4.52 | 51,742 |
| Europe Map Quiz | 0 | - | 5.00 | 4,731,377 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,991 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,617 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,944 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,982 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,149 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,610 |
| Capitals of French Regions | 0 | - | 4.45 | 15,985 |
| Kings of France Quiz | 0 | - | 4.20 | 32,556 |
| Capitals of German States | 0 | - | 4.74 | 28,812 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,096 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,143 |
| Ancient Greek Words | 0 | - | 4.92 | 110,694 |
| British to American Food Translation | 0 | - | 3.38 | 51,814 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,262 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,094 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,341 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,831 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,396 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,163 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,566 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,078 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,714 |
| Middle East A-Z | 0 | - | 4.47 | 45,787 |
| 100 Most Common English Words | 0 | - | 4.88 | 1,304,865 |
| Africa Map Quiz | 0 | - | 5.00 | 2,104,323 |
| Oceania Map Quiz | 0 | - | 4.98 | 635,313 |
| Australian Capitals | 0 | - | 4.92 | 62,593 |
| Canada A-Z | 0 | - | 4.73 | 32,648 |
| European Physical Geography | 0 | - | 4.26 | 33,373 |
| Geography of Russia | 0 | - | 4.57 | 21,427 |
| Russian History A-Z | 0 | - | 4.38 | 30,828 |
