| States of Germany | 0 | - | 4.96 | 150,131 |
| Germany Immigration by Country | 0 | - | 4.84 | 80,049 |
| German Groups of Things | 0 | - | 4.46 | 38,308 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 526,433 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,056 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,479 |
| Save Europeans by Guessing Countries | 0 | - | 4.84 | 209,616 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,537 |
| Regions of Italy | 0 | - | 4.92 | 74,755 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,834 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,393 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,219 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,951 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,602 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,288 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,215 |
| Departments of France | 0 | - | 4.93 | 52,856 |
| Famous Germans | 0 | - | 4.50 | 54,631 |
| Germany True or False? | 0 | - | 4.61 | 48,539 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,377 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,987 |
| England or Wales? | 0 | - | 4.94 | 45,330 |
| Count to 10 in Europe: Pro | 0 | - | 4.85 | 68,595 |
| Official European Union Languages | 0 | - | 4.97 | 236,776 |
| European Countries in their Native Language | 0 | - | 4.99 | 156,716 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 425,282 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,522 |
| Word Chain - Germany | 0 | - | 4.31 | 22,478 |
| Europe Geography Decoder | 0 | - | 4.86 | 69,547 |
| Word Chain - France | 0 | - | 4.38 | 42,585 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,613 |
| Italian Foods | 0 | - | 4.31 | 72,212 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,574 |
| British Groups of Things | 0 | - | 4.25 | 82,681 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,244 |
| Celtic Nations | 0 | - | 4.69 | 46,818 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 71,000 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,628 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,320,022 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,955 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,992 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 86,867 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,893 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,993 |
| Regions of France | 0 | - | 4.78 | 119,297 |
| France Immigration by Country | 0 | - | 4.72 | 75,980 |
| Capitals of German States | 0 | - | 4.74 | 28,815 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,103 |
| History of Germany | 0 | - | 4.39 | 52,619 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,474 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,541 |
| Provinces of the Netherlands | 0 | - | 4.80 | 40,842 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,475 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,057 |
| Most Common Surnames in the UK | 0 | - | 4.21 | 69,451 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 41,921 |
| Counties of England | 0 | - | 4.97 | 789,417 |
| The UK for Americans - True or False | 0 | - | 4.46 | 58,397 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 350,082 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,008 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,362 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,348 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,244 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,289 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 79,820 |
| Federal Subjects of Russia | 0 | - | 4.94 | 144,047 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,194 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,741 |
| Word Chain - Italy | 0 | - | 4.07 | 23,089 |
| UK Cities Map Quiz | 0 | - | 4.95 | 462,233 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,984 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,139 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,243 |
| Name a Valid English City | 0 | - | 4.19 | 16,631 |
| Champions League Winners | 0 | - | 4.92 | 996,653 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,392 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,157 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,388 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,710 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,237 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,470 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,115 |
| Name a Valid African Country | 0 | - | 4.98 | 152,966 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,202 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,406 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,902 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,289 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,240 |
| Germany Country Quiz | 0 | - | 4.82 | 156,600 |
| Germany Cities Map Quiz | 0 | - | 4.86 | 125,173 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,781 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,774 |
| Italy Country Quiz | 0 | - | 4.82 | 122,247 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,428 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,108 |
| The Mafia Quiz | 0 | - | 4.46 | 23,210 |
| History of The Netherlands | 0 | - | 4.46 | 17,316 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,972 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,677 |
| Canary Islands | 0 | - | 4.61 | 17,406 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,932 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,166 |
| British Spellings | 0 | - | 4.07 | 99,231 |
| British to American Food Translation | 0 | - | 3.38 | 51,838 |
| British Acronyms | 0 | - | 4.39 | 45,622 |
| UK Immigration by Country | 0 | - | 4.94 | 139,684 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,219 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,328 |
| Geography of Scotland | 0 | - | 4.63 | 21,486 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 128,539 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,744 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,587 |
| Name a Valid Asian Country | 0 | - | 4.98 | 120,075 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,453 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,602 |
| Word Scramble - European Countries | 0 | - | 4.70 | 141,005 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,093 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,852 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,994 |
| Slavic Languages | 0 | - | 4.67 | 53,993 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,406 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,556 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,963 |
| France A-Z | 0 | - | 4.16 | 38,064 |
| French History Multiple Choice | 0 | - | 4.55 | 32,880 |
| Geography of Germany | 0 | - | 4.35 | 17,089 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 642,051 |
| Name that Greek Letter | 0 | - | 4.94 | 321,722 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,434 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.87 | 60,389 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,257 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 85,533 |
| Switzerland A-Z | 0 | - | 4.45 | 25,511 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,456 |
| Malta Country Quiz | 0 | - | 4.81 | 30,833 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,890 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 266,573 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,605 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,866 |
| Top European Languages on a Map | 0 | - | 4.77 | 131,158 |
| History of Russia Quiz | 0 | - | 4.49 | 31,795 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,573 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,922 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,097 |
| Famous French People | 0 | - | 4.12 | 27,959 |
| Movies Set in France | 0 | - | 4.26 | 13,076 |
| French Inventions | 0 | - | 4.08 | 13,866 |
| French Foods | 0 | - | 4.00 | 27,592 |
| History of Paris | 0 | - | 4.24 | 13,616 |
| The Trojan War | 0 | - | 4.83 | 39,443 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,578 |
| 101 Figures from Greek Mythology | 0 | - | 5.00 | 124,335 |
| History of Italy | 0 | - | 4.55 | 31,820 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,183 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,044 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,062 |
| Roman Emperors | 0 | - | 4.95 | 118,516 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,488 |
| Famous Nordic People | 0 | - | 4.34 | 19,865 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,287 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,359 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,689 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,546 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,984 |
| Geography of Spain | 0 | - | 4.59 | 21,969 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,467 |
| Members of the British Royal Family | 0 | - | 4.10 | 113,807 |
| People on Money - England | 0 | - | 4.29 | 16,565 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,340 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 277,135 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 55,204 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,811 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 26,878 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,422 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,925 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,871 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,732 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,238 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,927 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,688 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,641 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,032 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,323 |
| Europe Map Quiz | 0 | - | 5.00 | 4,732,182 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,609 |
| Four Letter European Geography #1 | 0 | - | 4.44 | 27,165 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 19,621 |
| Capitals of French Regions | 0 | - | 4.45 | 15,988 |
| Kings of France Quiz | 0 | - | 4.20 | 32,560 |
| German Loan Words | 0 | - | 4.27 | 135,464 |
| Olympian Gods Quiz | 0 | - | 4.96 | 496,373 |
| Ancient Greek Words | 0 | - | 4.92 | 110,722 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,418 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,271 |
| Name Every Beatles Song | 0 | - | 4.97 | 234,158 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 290,373 |
| Famous Scottish People | 0 | - | 4.22 | 18,327 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,333 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,332 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,160 |
