| The Trojan War | 0 | - | 4.83 | 39,846 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,605 |
| Name that Greek Letter | 0 | - | 4.93 | 324,334 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,115 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,968 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,003 |
| Roman Emperors | 0 | - | 4.95 | 120,538 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,996 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,741 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,720 |
| Name the English Monarchs | 0 | - | 4.91 | 504,495 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,531 |
| Ancient Roman Trivia #2 | 0 | - | 4.59 | 41,796 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,053 |
| Roman Names for Places | 0 | - | 4.62 | 58,490 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,380 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,250 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,250 |
| Medieval English History | 0 | - | 4.53 | 43,592 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,859 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,910 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,229 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,428 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,230 |
| Countries Bordering France | 0 | - | 4.83 | 403,830 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,914 |
| Ancient Greek Words | 0 | - | 4.93 | 112,039 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,213 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,865 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,818 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,232 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,018 |
| Europe Map Quiz | 0 | - | 5.00 | 4,774,448 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,815 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,291 |
| Departments of France | 0 | - | 4.93 | 54,607 |
| Germany Country Quiz | 0 | - | 4.83 | 158,316 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,736 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,803 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,701 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,637 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,178 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,348 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,154 |
| England or Wales? | 0 | - | 4.94 | 45,827 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,631 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,907 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,721 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,993 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,312 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,602 |
| Greece Country Quiz | 0 | - | 4.74 | 66,425 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,185 |
| Counties of Ireland | 0 | - | 4.92 | 196,301 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,063 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,465 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,501 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,483 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,309 |
| History of Scotland | 0 | - | 4.51 | 21,137 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,852 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,066 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,510 |
| Kings of France Quiz | 0 | - | 4.20 | 32,845 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,048 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,834 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,869 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,953 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,464 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,707 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,589 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,129 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,831 |
| English Royal Consorts | 0 | - | 4.38 | 37,441 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,842 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,308 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,934 |
| The Only European Country ... | 0 | - | 4.91 | 217,730 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,797 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,250,360 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,738 |
| History of Russia Quiz | 0 | - | 4.47 | 31,970 |
| French History Multiple Choice | 0 | - | 4.55 | 33,147 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,094 |
| History of Italy | 0 | - | 4.55 | 32,084 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,745 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,323 |
| Counties of England | 0 | - | 4.97 | 799,798 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,991 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,761 |
| History of London | 0 | - | 4.33 | 26,230 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,810 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,787 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,054 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,558 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,679 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,464 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,697 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,859 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,699 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,495 |
| Slavic Countries | 0 | - | 4.96 | 111,994 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,609 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,372 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,323 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,460 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,811 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,541 |
| Champions League Winners | 0 | - | 4.92 | 1,010,878 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 98,216 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,135 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,967 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,862 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,082 |
| Monarchies of Europe | 0 | - | 4.90 | 98,445 |
| European Countries with One Border | 0 | - | 4.97 | 183,254 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,025 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,481 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,279 |
| Countries That Border Russia | 0 | - | 4.98 | 463,104 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,191 |
| History of Austria | 0 | - | 4.70 | 17,923 |
| Austria Country Quiz | 0 | - | 4.57 | 59,887 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,995 |
| France Country Quiz | 0 | - | 4.70 | 135,289 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,969 |
| Geography of the French Empire | 0 | - | 4.45 | 27,168 |
| The French Revolution | 0 | - | 4.47 | 24,079 |
| History of France | 0 | - | 4.61 | 57,347 |
| French History A-Z | 0 | - | 4.27 | 24,799 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,323 |
| States of Germany | 0 | - | 4.95 | 153,545 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,360 |
| Regions of Italy | 0 | - | 4.92 | 76,416 |
| Italy Country Quiz | 0 | - | 4.77 | 123,706 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,848 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,592 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,702 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,513 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,587 |
| The Vikings! | 0 | - | 4.46 | 28,375 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,246 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,088 |
| The Portuguese Empire | 0 | - | 4.58 | 12,087 |
| Spain Country Quiz | 0 | - | 4.44 | 128,886 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,646 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,492 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,488 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,237 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,205 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,781 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,424 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,973 |
| Geography of the British Empire | 0 | - | 4.48 | 39,771 |
| Animals in British History | 0 | - | 4.43 | 26,052 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,771 |
| Counties of Wales | 0 | - | 4.63 | 39,425 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,711,838 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,357 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,426 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,353 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,227 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,557 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,692 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,517 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,684 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,962 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,525 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,771 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,241 |
| Countries that Border Poland | 0 | - | 4.99 | 172,703 |
| Russia Country Quiz | 0 | - | 4.83 | 114,783 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,023 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,769 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,530 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,489 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,444 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,738 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,891 |
| German Inventions | 0 | - | 3.91 | 30,257 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,659 |
| Roman to Greek God | 0 | - | 4.52 | 123,082 |
| History of Ireland | 0 | - | 4.39 | 31,313 |
| Italian History A-Z | 0 | - | 4.21 | 17,750 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,131 |
| Roman History by Picture | 0 | - | 4.46 | 26,521 |
| Byzantine History | 0 | - | 4.91 | 28,940 |
| Byzantine Emperors | 0 | - | 4.92 | 14,415 |
| History of The Netherlands | 0 | - | 4.46 | 17,499 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,075 |
| Finland Country Quiz | 0 | - | 4.51 | 59,829 |
| Norway Country Quiz | 0 | - | 4.44 | 77,558 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,268 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,379 |
| Spanish History A-Z | 0 | - | 4.37 | 19,330 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,559 |
| UK Immigration by Country | 0 | - | 4.94 | 141,246 |
| Arthurian Legend | 0 | - | 4.33 | 25,136 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,342 |
