| The Trojan War | 0 | - | 4.83 | 39,698 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 111,742 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 646,913 |
| Name that Greek Letter | 0 | - | 4.93 | 323,328 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,971 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,902 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,486 |
| Roman Emperors | 0 | - | 4.95 | 119,896 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,602 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,643 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 125,816 |
| Name the English Monarchs | 0 | - | 4.91 | 502,255 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,494 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,724 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,897 |
| Roman Names for Places | 0 | - | 4.62 | 58,252 |
| Ancient Greek Inventions | 0 | - | 4.17 | 16,339 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,962 |
| Olympian Gods Quiz | 0 | - | 4.96 | 500,470 |
| Medieval English History | 0 | - | 4.53 | 43,496 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,098 |
| Countries of Europe in 1848 | 0 | - | 4.99 | 80,840 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 64,533 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,891 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 56,776 |
| Countries Bordering France | 0 | - | 4.83 | 402,359 |
| Countries Bordering Germany | 0 | - | 4.99 | 369,237 |
| Ancient Greek Words | 0 | - | 4.93 | 111,510 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,177 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,776 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,637 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,128 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,943 |
| Europe Map Quiz | 0 | - | 5.00 | 4,760,093 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,667 |
| France Cities Map Quiz | 0 | - | 4.96 | 166,653 |
| Departments of France | 0 | - | 4.93 | 54,018 |
| Germany Country Quiz | 0 | - | 4.82 | 157,759 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,073 |
| Italy Country Quiz | 0 | - | 4.82 | 123,334 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,281 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,949 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,537 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 96,820 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 185,561 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,482 |
| England or Wales? | 0 | - | 4.94 | 45,659 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,463 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,753 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,277 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,844 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,144 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 96,482 |
| Greece Country Quiz | 0 | - | 4.74 | 66,222 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,130 |
| Counties of Ireland | 0 | - | 4.92 | 195,072 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,836 |
| Countries Closest to Italy | 0 | - | 4.97 | 197,935 |
| Countries Closest to Spain | 0 | - | 4.96 | 226,857 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 130,551 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,254 |
| History of Scotland | 0 | - | 4.51 | 21,086 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,606 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,787 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,953 |
| Kings of France Quiz | 0 | - | 4.20 | 32,721 |
| The Reign of Napoleon | 0 | - | 4.54 | 38,937 |
| Countries that Beat Germany | 0 | - | 4.95 | 106,315 |
| Figures from Greek Mythology | 0 | - | 4.91 | 186,775 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,302 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,428 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,273 |
| Countries that Beat Spain | 0 | - | 4.94 | 62,891 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,319 |
| English Royal Consorts | 0 | - | 4.37 | 37,342 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,848 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,282 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,099 |
| The Only European Country ... | 0 | - | 4.91 | 216,412 |
| European Countries NOT in NATO | 0 | - | 4.90 | 60,999 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,242,636 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,327,625 |
| History of Russia Quiz | 0 | - | 4.47 | 31,907 |
| French History Multiple Choice | 0 | - | 4.55 | 33,025 |
| Countries that Beat Greece | 0 | - | 4.53 | 48,927 |
| History of Italy | 0 | - | 4.55 | 31,962 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,645 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,211 |
| Counties of England | 0 | - | 4.97 | 796,023 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,841 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,705 |
| History of London | 0 | - | 4.33 | 26,187 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,550 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 355,465 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,592 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,123 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 218,502 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,091 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 310,299 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 171,392 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,190 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,060 |
| Slavic Countries | 0 | - | 4.96 | 111,597 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,443 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 436,813 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,091 |
| UK Cities Map Quiz | 0 | - | 4.96 | 464,332 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,740 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,497 |
| Champions League Winners | 0 | - | 4.92 | 1,005,838 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,778 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,425 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,171 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,671 |
| Monarchies of Europe | 0 | - | 4.90 | 98,065 |
| European Countries with One Border | 0 | - | 4.97 | 182,687 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,488 |
| European Geography By Letter - B #2 | 0 | - | 4.85 | 78,222 |
| Federal Subjects of Russia | 0 | - | 4.95 | 146,918 |
| Countries That Border Russia | 0 | - | 4.98 | 461,524 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,842 |
| History of Austria | 0 | - | 4.70 | 17,854 |
| Austria Country Quiz | 0 | - | 4.57 | 59,709 |
| Belgium Country Quiz | 0 | - | 4.73 | 71,762 |
| France Country Quiz | 0 | - | 4.70 | 134,913 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,330 |
| Geography of the French Empire | 0 | - | 4.45 | 27,048 |
| The French Revolution | 0 | - | 4.46 | 23,925 |
| History of France | 0 | - | 4.59 | 56,935 |
| French History A-Z | 0 | - | 4.27 | 24,612 |
| States of Germany Map Quiz | 0 | - | 4.91 | 132,725 |
| States of Germany | 0 | - | 4.96 | 152,348 |
| Germany Immigration by Country | 0 | - | 4.85 | 80,978 |
| Regions of Italy | 0 | - | 4.92 | 75,794 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,735 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,483 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,486 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,077 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,437 |
| The Vikings! | 0 | - | 4.46 | 28,339 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,104 |
| Portugal Country Quiz | 0 | - | 4.69 | 71,849 |
| The Portuguese Empire | 0 | - | 4.58 | 12,060 |
| Spain Country Quiz | 0 | - | 4.45 | 128,465 |
| Regions of Spain Quiz | 0 | - | 4.90 | 113,857 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,336 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,140 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 93,950 |
| United Kingdom A-Z | 0 | - | 4.51 | 87,737 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,708 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,339 |
| Countries the UK Declared War On | 0 | - | 4.61 | 122,415 |
| Geography of the British Empire | 0 | - | 4.48 | 39,657 |
| Animals in British History | 0 | - | 4.43 | 25,996 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,688 |
| Counties of Wales | 0 | - | 4.63 | 39,252 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 106,779 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,694,459 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 190,691 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,055 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,924 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,085 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,342 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,411 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,033 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 276,656 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,958 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 89,967 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 260,666 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,581 |
| Countries that Border Poland | 0 | - | 4.99 | 172,205 |
| Russia Country Quiz | 0 | - | 4.85 | 114,409 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,810 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 100,628 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,309 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,169 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,325 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,349 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,781 |
| German Inventions | 0 | - | 3.91 | 30,234 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,626 |
| Roman to Greek God | 0 | - | 4.52 | 122,760 |
| History of Ireland | 0 | - | 4.39 | 31,154 |
| Italian History A-Z | 0 | - | 4.21 | 17,698 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,076 |
| Roman History by Picture | 0 | - | 4.46 | 26,457 |
| Byzantine History | 0 | - | 4.91 | 28,823 |
| Byzantine Emperors | 0 | - | 4.94 | 13,580 |
| History of The Netherlands | 0 | - | 4.46 | 17,428 |
| Denmark Country Quiz | 0 | - | 4.78 | 75,872 |
| Finland Country Quiz | 0 | - | 4.50 | 59,639 |
| Norway Country Quiz | 0 | - | 4.44 | 77,283 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,139 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,903 |
| Spanish History A-Z | 0 | - | 4.37 | 19,285 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,398 |
| UK Immigration by Country | 0 | - | 4.94 | 140,817 |
| Arthurian Legend | 0 | - | 4.33 | 25,106 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 139,675 |
| British Monopoly Board | 0 | - | 4.52 | 41,161 |
