| Counties of England | 0 | - | 4.97 | 792,130 |
| U.S. Citizenship Test Questions | 0 | - | 4.83 | 238,766 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,598 |
| Monarchies of Europe | 0 | - | 4.90 | 97,661 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 76,645 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,698 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,100 |
| States of Germany | 0 | - | 4.96 | 150,978 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,316 |
| Regions of Italy | 0 | - | 4.92 | 75,131 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 44,072 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,106 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,683 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,302 |
| Europe Map Quiz | 0 | - | 5.00 | 4,744,058 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,665 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,574 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,447 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 34,834 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,631 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,982 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,639 |
| Departments of France | 0 | - | 4.93 | 53,209 |
| Germany Country Quiz | 0 | - | 4.82 | 157,116 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,502 |
| Italy Country Quiz | 0 | - | 4.82 | 122,623 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,771 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,403 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,424 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,364 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,990 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,140 |
| England or Wales? | 0 | - | 4.94 | 45,473 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 426,387 |
| Belgium Country Quiz | 0 | - | 4.70 | 71,446 |
| United Kingdom A-Z | 0 | - | 4.53 | 87,411 |
| Name the English Monarchs | 0 | - | 4.92 | 499,871 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,517 |
| Malta Country Quiz | 0 | - | 4.81 | 30,918 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,806 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 363,109 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 114,218 |
| The Only European Country ... | 0 | - | 4.91 | 214,969 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,224 |
| History of The Netherlands | 0 | - | 4.46 | 17,352 |
| British Acronyms | 0 | - | 4.39 | 45,694 |
| NATO Countries | 0 | - | 4.98 | 277,837 |
| EU Countries Quiz | 0 | - | 4.99 | 271,399 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,135 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,233,714 |
| European Geography By Letter - A | 0 | - | 4.61 | 132,658 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 111,112 |
| European Geography By Letter - C | 0 | - | 4.46 | 112,093 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,966 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,429 |
| European Geography By Letter - M | 0 | - | 4.64 | 129,285 |
| European Geography By Letter - N | 0 | - | 4.44 | 100,019 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,797 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,428 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,581 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,323,099 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,788 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,090 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,664 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,263 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,733 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 309,162 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 169,307 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,680 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,496 |
| Slavic Countries | 0 | - | 4.96 | 111,193 |
| Regions of France | 0 | - | 4.77 | 119,875 |
| France Immigration by Country | 0 | - | 4.72 | 76,157 |
| Famous Germans | 0 | - | 4.50 | 54,809 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,725 |
| Largest Islands of Greece | 0 | - | 4.59 | 47,699 |
| Famous Italians by Clue | 0 | - | 4.45 | 88,837 |
| Provinces of the Netherlands | 0 | - | 4.80 | 41,023 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 102,806 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 352,279 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,304 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,858 |
| Three Band Flags of Europe | 0 | - | 4.98 | 192,428 |
| Catholic Countries in Europe | 0 | - | 4.83 | 94,551 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,196 |
| European Countries with One Border | 0 | - | 4.97 | 182,064 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,929 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,479 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,811 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,908 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,448 |
| Category Elimination - European Geography #3 | 0 | - | 4.85 | 80,270 |
| Federal Subjects of Russia | 0 | - | 4.94 | 145,102 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,494 |
| UK Cities Map Quiz | 0 | - | 4.95 | 463,114 |
| Counties of England Map Quiz | 0 | - | 4.97 | 306,584 |
| The British Royal Family - Modern Times | 0 | - | 4.16 | 21,495 |
| People on Money - England | 0 | - | 4.29 | 16,587 |
| English Monarchs in Order by First Letter | 0 | - | 4.38 | 31,491 |
| Champions League Winners | 0 | - | 4.92 | 1,000,273 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,164 |
| Monarchies of Asia | 0 | - | 4.97 | 70,805 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,604 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,282 |
| Countries That Border Russia | 0 | - | 4.98 | 460,191 |
| Austria Country Quiz | 0 | - | 4.57 | 59,514 |
| France Country Quiz | 0 | - | 4.70 | 134,433 |
| Countries Bordering France | 0 | - | 4.83 | 400,983 |
| Kings of France Quiz | 0 | - | 4.20 | 32,623 |
| Countries Bordering Germany | 0 | - | 4.99 | 367,895 |
| Greece Country Quiz | 0 | - | 4.74 | 65,948 |
| Luxembourg Country Quiz | 0 | - | 4.77 | 33,595 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,343 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,194 |
| Nordic Cities Map Quiz | 0 | - | 4.74 | 89,954 |
| Sweden Immigration by Country | 0 | - | 4.55 | 55,805 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,557 |
| Spain Country Quiz | 0 | - | 4.45 | 127,993 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,109 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,620 |
| British Geography Multiple Choice | 0 | - | 4.49 | 43,252 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,257 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,069 |
| Geography of the British Empire | 0 | - | 4.48 | 39,569 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,611 |
| Counties of Wales | 0 | - | 4.63 | 39,054 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,534 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,413 |
| European Geography By Letter - E | 0 | - | 4.23 | 112,417 |
| European Geography By Letter - F | 0 | - | 4.17 | 91,843 |
| European Geography By Letter - H | 0 | - | 4.30 | 95,083 |
| European Geography By Letter - G | 0 | - | 4.27 | 101,708 |
| European Geography By Letter - I | 0 | - | 4.10 | 94,664 |
| European Geography By Letter - K | 0 | - | 4.14 | 69,351 |
| European Geography By Letter - O | 0 | - | 4.28 | 62,077 |
| European Geography by Letter - W | 0 | - | 4.20 | 82,419 |
| European Geography By Letter - S #2 | 0 | - | 4.19 | 50,642 |
| European Geography A-Z | 0 | - | 4.29 | 49,098 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 275,637 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 258,445 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,819 |
| Russia Country Quiz | 0 | - | 4.85 | 114,001 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,058 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,176 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,861 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,833 |
| The Mafia Quiz | 0 | - | 4.46 | 23,242 |
| Canary Islands | 0 | - | 4.61 | 17,432 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,380 |
| Switzerland Immigration by Country | 0 | - | 4.70 | 29,339 |
| British Spellings | 0 | - | 4.07 | 99,343 |
| British Groups of Things | 0 | - | 4.25 | 82,758 |
| UK Immigration by Country | 0 | - | 4.94 | 140,053 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,989 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 138,849 |
| Biggest Immigrant Groups by Decade in the UK | 0 | - | 4.63 | 24,764 |
| British Monopoly Board | 0 | - | 4.52 | 41,091 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,780 |
| Geography of Scotland | 0 | - | 4.63 | 21,535 |
| Medieval English History | 0 | - | 4.53 | 43,386 |
| The Margaret Thatcher Premiership | 0 | - | 3.79 | 9,215 |
| Famous Scottish People | 0 | - | 4.22 | 18,351 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 129,160 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,668 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,233 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,994 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,573 |
| U.S. States by Governor | 0 | - | 4.43 | 18,012 |
| U.S. Political Parties in History | 0 | - | 4.44 | 27,615 |
| U.S. Government Agencies | 0 | - | 4.44 | 19,600 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,700 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,147 |
| European Countries by First 2 Letters | 0 | - | 4.95 | 527,568 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,917 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,624 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,063 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 113,777 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,093 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,419 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,967 |
| Countries that Border Poland | 0 | - | 4.99 | 171,741 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,544 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,425 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,909 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,715 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,643 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,034 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,619 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,007 |
| Famous Dutch and Belgian People | 0 | - | 4.56 | 17,995 |
| 20 Questions About France | 0 | - | 4.11 | 32,359 |
| France A-Z | 0 | - | 4.16 | 38,107 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,682 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,960 |
| 15 Most Populous Countries that Speak a Germanic Language | 0 | - | 4.39 | 82,408 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 95,279 |
| History of Germany | 0 | - | 4.39 | 52,709 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 644,293 |
| Name that Greek Letter | 0 | - | 4.93 | 322,448 |
| Counties of Ireland | 0 | - | 4.92 | 193,920 |
