| States of Germany | 0 | - | 4.95 | 153,512 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,356 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,914 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,518 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,248 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 35,268 |
| Save Europeans by Guessing Countries | 0 | - | 4.86 | 214,957 |
| Regions of Italy | 0 | - | 4.92 | 76,405 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,510 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,633 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,473 |
| British Groups of Things | 0 | - | 4.25 | 82,928 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,468 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,667 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,940 |
| Departments of France | 0 | - | 4.93 | 54,601 |
| Famous Germans | 0 | - | 4.50 | 55,565 |
| Germany True or False? | 0 | - | 4.61 | 48,916 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,635 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,504 |
| England or Wales? | 0 | - | 4.94 | 45,826 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,395 |
| Official European Union Languages | 0 | - | 4.97 | 239,069 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,228 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,466 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,904 |
| Word Chain - Germany | 0 | - | 4.31 | 22,638 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,146 |
| European Geographic Groups of Four | 0 | - | 4.57 | 16,099 |
| Word Chain - France | 0 | - | 4.38 | 42,865 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 47,427 |
| Italian Foods | 0 | - | 4.30 | 73,003 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,937 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,063 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,444 |
| Celtic Nations | 0 | - | 4.69 | 47,008 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,386 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,044 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,683 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,340 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,317 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,706 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,624 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,809 |
| Regions of France | 0 | - | 4.70 | 121,403 |
| France Immigration by Country | 0 | - | 4.70 | 76,715 |
| Capitals of German States | 0 | - | 4.74 | 29,002 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,417 |
| History of Germany | 0 | - | 4.39 | 52,912 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,193 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,900 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,539 |
| Most Common First Names in Spain | 0 | - | 4.27 | 45,674 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,364 |
| Most Common Surnames in the UK | 0 | - | 4.22 | 69,799 |
| Fictional Characters from Great Britain | 0 | - | 4.24 | 42,055 |
| Counties of England | 0 | - | 4.97 | 799,754 |
| The UK for Americans - True or False | 0 | - | 4.43 | 58,714 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,736 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,345 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,193 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,462 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,448 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,443 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,256 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,962 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,316 |
| Word Chain - Italy | 0 | - | 4.07 | 23,197 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,437 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,230 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,342 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,369 |
| Name a Valid English City | 0 | - | 4.19 | 16,764 |
| Champions League Winners | 0 | - | 4.92 | 1,010,802 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,649 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,438 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,628 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,244 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,204 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,984 |
| Europe Geography Quiz #3 | 0 | - | 4.35 | 63,771 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,727 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,231 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,812 |
| Famous French People | 0 | - | 4.07 | 35,911 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,280 |
| Germany Country Quiz | 0 | - | 4.83 | 158,306 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,733 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,111 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,789 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,695 |
| The Mafia Quiz | 0 | - | 4.46 | 23,391 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,174 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,335 |
| Canary Islands | 0 | - | 4.62 | 17,499 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,364 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,864 |
| British Spellings | 0 | - | 4.06 | 99,526 |
| British to American Food Translation | 0 | - | 3.38 | 51,991 |
| British Acronyms | 0 | - | 4.40 | 45,868 |
| UK Immigration by Country | 0 | - | 4.94 | 141,242 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,332 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,139 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,988 |
| Geography of Scotland | 0 | - | 4.63 | 21,677 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,204 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,474 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,211 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,339 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,705 |
| Name a Valid African Country | 0 | - | 4.98 | 154,495 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,120 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,771 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,665 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,678 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,946 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,817 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,685 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,509 |
| Slavic Languages | 0 | - | 4.68 | 54,512 |
| Famous Swiss and Austrian People | 0 | - | 4.45 | 14,648 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 18,098 |
| France A-Z | 0 | - | 4.16 | 38,280 |
| French History Multiple Choice | 0 | - | 4.55 | 33,144 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,517 |
| Geography of Germany | 0 | - | 4.35 | 17,216 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,573 |
| Name that Greek Letter | 0 | - | 4.93 | 324,323 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,680 |
| Modern Day Countries of the Dutch Empire on a Map | 0 | - | 4.86 | 61,363 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,529 |
| Countries of Iberia in History with a Map | 0 | - | 4.88 | 42,132 |
| Modern Day Countries of the Spanish Empire on a Map | 0 | - | 4.95 | 86,578 |
| Switzerland A-Z | 0 | - | 4.45 | 25,700 |
| Wonderwall Lyrics | 0 | - | 4.25 | 73,900 |
| Malta Country Quiz | 0 | - | 4.81 | 31,135 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 20,271 |
| Countries that Beat the United States | 0 | - | 4.93 | 167,942 |
| California Groups of Things | 0 | - | 4.25 | 45,597 |
| New York Groups of Things | 0 | - | 4.35 | 68,015 |
| U.S. History Groups of Two | 0 | - | 4.23 | 44,526 |
| Countries that Beat Canada | 0 | - | 4.91 | 98,618 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,440 |
| History of Russia Quiz | 0 | - | 4.47 | 31,968 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,792 |
| Countries that Beat Russia | 0 | - | 4.81 | 83,150 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,280 |
| Movies Set in France | 0 | - | 4.26 | 13,135 |
| French Inventions | 0 | - | 4.10 | 13,911 |
| French Foods | 0 | - | 4.00 | 27,735 |
| History of Paris | 0 | - | 4.24 | 13,665 |
| The Trojan War | 0 | - | 4.83 | 39,841 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,386 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,697 |
| History of Italy | 0 | - | 4.55 | 32,082 |
| Italy Multiple Choice | 0 | - | 4.74 | 104,043 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,135 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,930 |
| Roman Emperors | 0 | - | 4.95 | 120,516 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,744 |
| Famous Nordic People | 0 | - | 4.34 | 20,195 |
| Most Common Last Names in Sweden | 0 | - | 4.49 | 15,439 |
| Countries that Beat Iceland | 0 | - | 4.81 | 43,019 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,580 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,625 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,319 |
| Geography of Spain | 0 | - | 4.59 | 22,117 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,549 |
| Members of the British Royal Family | 0 | - | 4.10 | 114,372 |
| People on Money - England | 0 | - | 4.29 | 16,627 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,864 |
| Countries that Beat Indonesia | 0 | - | 4.86 | 56,157 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,740 |
| Random Sequential Oceanic Countries on a Map | 0 | - | 4.97 | 27,287 |
| European Geography By Letter - A | 0 | - | 4.52 | 147,091 |
| European Geography By Letter - B #1 | 0 | - | 4.69 | 120,491 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,880 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,432 |
| European Geography By Letter - L | 0 | - | 4.52 | 114,101 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,472 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,280 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,096 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,347 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,934 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,172 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,961 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,579 |
| Capitals of French Regions | 0 | - | 4.45 | 16,121 |
| Kings of France Quiz | 0 | - | 4.20 | 32,841 |
| German Loan Words | 0 | - | 4.28 | 139,585 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,215 |
| Ancient Greek Words | 0 | - | 4.93 | 112,030 |
| Robin Hood Quiz | 0 | - | 4.00 | 8,469 |
| Things British People Know that Americans Don't | 0 | - | 4.25 | 51,502 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,308 |
| Bohemian Rhapsody Lyrics | 0 | - | 4.98 | 292,180 |
| Famous Scottish People | 0 | - | 4.22 | 18,418 |
