| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,200 |
| States of Germany | 0 | - | 4.95 | 153,228 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,290 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 530,612 |
| Germany Multiple Choice | 0 | - | 4.84 | 54,481 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,228 |
| Regions of Italy | 0 | - | 4.92 | 76,248 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,431 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,421 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,419 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,756 |
| Count to 10 in Europe: Pro | 0 | - | 4.86 | 69,333 |
| Official European Union Languages | 0 | - | 4.97 | 238,938 |
| European Countries in their Native Language | 0 | - | 4.99 | 158,140 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,081 |
| Africa Map Quiz | 0 | - | 5.00 | 2,121,941 |
| Europe Geography Decoder | 0 | - | 4.86 | 70,114 |
| Countries that Beat Switzerland | 0 | - | 4.88 | 41,916 |
| Countries of Africa | 0 | - | 5.00 | 2,545,248 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 47,111 |
| African East Coast | 0 | - | 4.96 | 96,289 |
| Western Africa Map Quiz | 0 | - | 4.97 | 74,159 |
| History of Italy | 0 | - | 4.55 | 32,054 |
| Italy Multiple Choice | 0 | - | 4.74 | 103,967 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,721 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,298 |
| Add A Letter - Make a European City | 0 | - | 4.90 | 23,431 |
| Celtic Nations | 0 | - | 4.69 | 46,997 |
| Most Guessed Cities in Europe - Not Capitals | 0 | - | 4.82 | 87,541 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,279 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,087 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.40 | 23,507 |
| Geography of Germany | 0 | - | 4.35 | 17,207 |
| History of Germany | 0 | - | 4.39 | 52,899 |
| Counties of England | 0 | - | 4.97 | 798,969 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,230 |
| Africa Cities Map Quiz | 0 | - | 4.97 | 99,105 |
| Flags of Africa Quiz | 0 | - | 5.00 | 473,271 |
| Top 10 Biggest African Countries by Area | 0 | - | 4.99 | 217,372 |
| 10 Southernmost Countries in Africa | 0 | - | 4.98 | 116,801 |
| 10 Northernmost Countries in Africa | 0 | - | 4.98 | 161,492 |
| Top 10 Smallest African Countries by Area | 0 | - | 4.96 | 33,443 |
| African Countries with the Shortest Names | 0 | - | 4.98 | 153,856 |
| Top African Languages on a Map | 0 | - | 4.92 | 74,462 |
| African Island Countries | 0 | - | 4.96 | 101,882 |
| Countries of Africa with an Empty Map | 0 | - | 5.00 | 243,851 |
| All First-Level Subdivisions of Africa on a Map | 0 | - | 4.92 | 33,422 |
| Regions of France | 0 | - | 4.72 | 121,259 |
| France Immigration by Country | 0 | - | 4.70 | 76,684 |
| Famous Germans | 0 | - | 4.50 | 55,536 |
| German Groups of Things | 0 | - | 4.46 | 38,526 |
| Germany True or False? | 0 | - | 4.61 | 48,893 |
| Largest Islands of Greece | 0 | - | 4.59 | 48,142 |
| Famous Italians by Clue | 0 | - | 4.45 | 89,811 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,501 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,340 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 103,445 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,938 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,395 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,796 |
| Category Elimination - European Geography #3 | 0 | - | 4.86 | 81,319 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,027 |
| History of Austria | 0 | - | 4.70 | 17,905 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,861 |
| Geography of the French Empire | 0 | - | 4.45 | 27,156 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| France Multiple Choice | 0 | - | 4.39 | 40,774 |
| History of France | 0 | - | 4.59 | 57,278 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| The Portuguese Empire | 0 | - | 4.58 | 12,083 |
| American to British Word Translation | 0 | - | 4.14 | 139,320 |
| Languages of the United Kingdom | 0 | - | 4.13 | 40,949 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,163 |
| Counties of England Map Quiz | 0 | - | 4.97 | 308,171 |
| Champions League Winners | 0 | - | 4.92 | 1,009,974 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,396 |
| African Diaspora - Top 10 Countries | 0 | - | 4.93 | 72,891 |
| The Only African Country ... | 0 | - | 4.99 | 129,280 |
| African Countries by a Single Clue | 0 | - | 4.92 | 68,210 |
| Pixelated Africa Map | 0 | - | 4.98 | 100,074 |
| Countries Closest to Africa | 0 | - | 4.96 | 157,410 |
| African Countries That Have Been to the FIFA World Cup | 0 | - | 4.89 | 58,442 |
| Morocco Country Quiz | 0 | - | 4.81 | 46,597 |
| D.R. Congo Country Quiz | 0 | - | 4.87 | 39,437 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,939 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,390 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,643 |
| Departments of France | 0 | - | 4.93 | 54,474 |
| Germany Country Quiz | 0 | - | 4.83 | 158,191 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,702 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,618 |
| England or Wales? | 0 | - | 4.94 | 45,804 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 131,009 |
| African Great Lakes | 0 | - | 4.82 | 66,521 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,611 |
| Name a Valid African Country | 0 | - | 4.98 | 154,369 |
| Kenya Country Quiz | 0 | - | 4.86 | 34,859 |
| Tanzania Country Quiz | 0 | - | 4.90 | 33,132 |
| Pre-Euro Currencies | 0 | - | 4.44 | 52,647 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.80 | 41,675 |
| Word Scramble - European Countries | 0 | - | 4.73 | 141,884 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 115,627 |
| Slavic Languages | 0 | - | 4.68 | 54,469 |
| Famous French People | 0 | - | 4.07 | 35,859 |
| Word Chain - France | 0 | - | 4.38 | 42,846 |
| Capitals of Italian Regions | 0 | - | 4.62 | 36,665 |
| Italian Foods | 0 | - | 4.30 | 72,943 |
| The Mafia Quiz | 0 | - | 4.46 | 23,371 |
| History of The Netherlands | 0 | - | 4.46 | 17,484 |
| Spanish Immigration by Country | 0 | - | 4.63 | 55,515 |
| Canary Islands | 0 | - | 4.62 | 17,492 |
| Switzerland Immigration by Country | 0 | - | 4.69 | 29,834 |
| British Spellings | 0 | - | 4.06 | 99,509 |
| British Groups of Things | 0 | - | 4.25 | 82,912 |
| British Acronyms | 0 | - | 4.40 | 45,852 |
| United Kingdom Decoder | 0 | - | 4.29 | 40,056 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,941 |
| Geography of Scotland | 0 | - | 4.63 | 21,659 |
| Eswatini Country Quiz | 0 | - | 4.85 | 20,863 |
| Botswana Country Quiz | 0 | - | 4.90 | 22,570 |
| Lesotho Country Quiz | 0 | - | 4.83 | 20,628 |
| Countries Bordering South Africa | 0 | - | 4.97 | 92,820 |
| Countries Closest to South Africa with Exceptions | 0 | - | 4.81 | 64,019 |
| Gabon Country Quiz | 0 | - | 4.83 | 18,596 |
| Countries Bordering D.R. Congo | 0 | - | 4.97 | 64,635 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,646 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,857 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,383 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,932 |
| Name that Greek Letter | 0 | - | 4.93 | 324,182 |
| History of Spain | 0 | - | 4.23 | 21,116 |
| Languages of Spain | 0 | - | 4.36 | 23,352 |
| British to American Word Translation | 0 | - | 3.74 | 255,172 |
| British Foods by Description | 0 | - | 3.94 | 48,342 |
| British and American Word Differences | 0 | - | 2.63 | 46,898 |
| British Geography Quiz #2 | 0 | - | 4.29 | 27,621 |
| Bridges of London | 0 | - | 4.17 | 10,119 |
| British Sport Trivia | 0 | - | 4.37 | 20,486 |
| Famous Welsh People | 0 | - | 4.31 | 11,571 |
| Countries of Africa by Borders in 30 Seconds | 0 | - | 4.43 | 356,135 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,764 |
| Djibouti Country Quiz | 0 | - | 4.82 | 21,735 |
| Countries Closest to Ethiopia | 0 | - | 4.90 | 69,045 |
| Countries Bordering Kenya | 0 | - | 4.87 | 62,971 |
| Mauritius Country Quiz | 0 | - | 4.83 | 22,310 |
| Seychelles Country Quiz | 0 | - | 4.91 | 21,920 |
| Countries Bordering Tanzania | 0 | - | 4.96 | 70,568 |
| Liberia Country Quiz | 0 | - | 4.85 | 21,937 |
| Mali Country Quiz | 0 | - | 4.83 | 24,856 |
| Top European Languages on a Map | 0 | - | 4.77 | 132,362 |
| History of Russia Quiz | 0 | - | 4.47 | 31,952 |
| Russia Multiple Choice | 0 | - | 4.58 | 40,778 |
| Movies Set in France | 0 | - | 4.26 | 13,133 |
| French Inventions | 0 | - | 4.10 | 13,909 |
| History of Paris | 0 | - | 4.24 | 13,660 |
| Word Chain - Germany | 0 | - | 4.31 | 22,617 |
| The Trojan War | 0 | - | 4.83 | 39,799 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,259 |
| Word Chain - Italy | 0 | - | 4.07 | 23,182 |
| Embarrassing Chapters in Italian History | 0 | - | 4.24 | 12,127 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,655 |
| Roman Emperors | 0 | - | 4.95 | 120,406 |
| Famous Nordic People | 0 | - | 4.34 | 20,174 |
| Famous Spaniards Quiz | 0 | - | 4.24 | 11,624 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,958 |
| Word Chain - United Kingdom | 0 | - | 4.05 | 29,361 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,546 |
| People on Money - England | 0 | - | 4.29 | 16,625 |
| Name a Valid English City | 0 | - | 4.19 | 16,753 |
| Asian Countries by First 2 Letters | 0 | - | 4.91 | 279,706 |
| African Physical Geography | 0 | - | 4.51 | 31,744 |
| African Countries by First 2 Letters | 0 | - | 4.96 | 268,606 |
| Colonies of Africa with a Map | 0 | - | 4.79 | 54,551 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,821 |
| Sudan Country Quiz | 0 | - | 4.91 | 27,737 |
| Australian Capitals | 0 | - | 4.92 | 62,756 |
| European Geography By Letter - A | 0 | - | 4.52 | 146,982 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 120,379 |
| European Geography By Letter - C | 0 | - | 4.46 | 114,778 |
| European Geography By Letter - D | 0 | - | 4.50 | 109,330 |
| European Geography By Letter - L | 0 | - | 4.52 | 113,997 |
| European Geography By Letter - M | 0 | - | 4.67 | 131,330 |
| European Geography By Letter - N | 0 | - | 4.44 | 101,206 |
| European Geography By Letter - R | 0 | - | 4.42 | 94,013 |
| European Geography By Letter - V | 0 | - | 4.42 | 93,287 |
| European Geography By Letter - T | 0 | - | 4.41 | 82,839 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,547 |
| Europe Geography Quiz #1 | 0 | - | 4.55 | 71,355 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 72,012 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 70,302 |
| Europe Geography Quiz #5 | 0 | - | 4.55 | 61,296 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 100,889 |
| Four Letter European Geography #2 | 0 | - | 4.57 | 20,549 |
| Capitals of French Regions | 0 | - | 4.45 | 16,112 |
| Capitals of German States | 0 | - | 4.74 | 28,990 |
| Chancellors of Germany, 1949–present | 0 | - | 4.60 | 23,402 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,933 |
| Ancient Greek Words | 0 | - | 4.93 | 111,917 |
| Name Every Beatles Song | 0 | - | 4.97 | 237,062 |
