| The Trojan War | 0 | - | 4.83 | 40,124 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 113,362 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 653,374 |
| Name that Greek Letter | 0 | - | 4.93 | 325,406 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,303 |
| Geography of Ancient Greece | 0 | - | 4.69 | 32,081 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 85,732 |
| Roman Emperors | 0 | - | 4.95 | 121,525 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 74,545 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,909 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 128,117 |
| Name the English Monarchs | 0 | - | 4.91 | 507,673 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,598 |
| Ancient Roman Trivia #2 | 0 | - | 4.61 | 44,417 |
| Geography of the Roman Empire | 0 | - | 4.55 | 52,282 |
| Roman Names for Places | 0 | - | 4.62 | 58,819 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,429 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,534 |
| Olympian Gods Quiz | 0 | - | 4.96 | 504,728 |
| Medieval English History | 0 | - | 4.53 | 43,700 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,650 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 86,264 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 66,101 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,085 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,791 |
| Countries Bordering France | 0 | - | 4.83 | 405,509 |
| Countries Bordering Germany | 0 | - | 4.99 | 372,379 |
| Ancient Greek Words | 0 | - | 4.93 | 112,740 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,278 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 32,011 |
| Houses of British Monarchs | 0 | - | 4.54 | 66,047 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,364 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,115 |
| Europe Map Quiz | 0 | - | 5.00 | 4,795,294 |
| Andorra Country Quiz | 0 | - | 4.91 | 32,024 |
| France Cities Map Quiz | 0 | - | 4.96 | 168,094 |
| Departments of France | 0 | - | 4.93 | 55,479 |
| Germany Country Quiz | 0 | - | 4.82 | 159,160 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 127,313 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 150,496 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 153,294 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,796 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,657 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 187,094 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 119,133 |
| England or Wales? | 0 | - | 4.94 | 46,094 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.74 | 58,843 |
| French Geography Quiz #1 | 0 | - | 4.89 | 35,322 |
| Countries Bordering Austria | 0 | - | 4.97 | 119,083 |
| Countries that Visit France the Most | 0 | - | 4.85 | 46,254 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,599 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 99,303 |
| Greece Country Quiz | 0 | - | 4.74 | 66,748 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,264 |
| Counties of Ireland | 0 | - | 4.92 | 197,788 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,406 |
| Countries Closest to Italy | 0 | - | 4.97 | 199,795 |
| Countries Closest to Spain | 0 | - | 4.96 | 228,475 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 132,745 |
| Embarrassing Chapters in British History | 0 | - | 4.31 | 32,418 |
| History of Scotland | 0 | - | 4.51 | 21,199 |
| World Capitals Closest to London | 0 | - | 4.88 | 111,464 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,457 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 431,574 |
| Kings of France Quiz | 0 | - | 4.22 | 32,976 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,242 |
| Countries that Beat Germany | 0 | - | 4.94 | 107,566 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 21,090 |
| Figures from Greek Mythology | 0 | - | 4.92 | 194,563 |
| Countries Italy Declared War On | 0 | - | 4.77 | 50,253 |
| Countries that Beat Italy | 0 | - | 4.85 | 55,337 |
| Countries that Beat Portugal | 0 | - | 4.86 | 60,041 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,466 |
| Commonwealth of Nations Countries | 0 | - | 4.95 | 238,677 |
| English Royal Consorts | 0 | - | 4.38 | 37,574 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,378 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 366,708 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 117,610 |
| The Only European Country ... | 0 | - | 4.91 | 219,774 |
| European Countries NOT in NATO | 0 | - | 4.91 | 62,930 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,262,550 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,337,762 |
| History of Russia Quiz | 0 | - | 4.47 | 32,032 |
| French History Multiple Choice | 0 | - | 4.55 | 33,285 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,585 |
| History of Italy | 0 | - | 4.55 | 32,199 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,867 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,482 |
| Counties of England | 0 | - | 4.97 | 804,757 |
| Invasions of Great Britain | 0 | - | 4.51 | 60,157 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,844 |
| History of London | 0 | - | 4.33 | 26,289 |
| British History Quiz for Dummies | 0 | - | 4.70 | 79,189 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 363,064 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 193,855 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 152,597 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,448 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,955 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 313,347 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.99 | 176,777 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 90,440 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,965 |
| Slavic Countries | 0 | - | 4.96 | 112,568 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,868 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 440,678 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,659 |
| UK Cities Map Quiz | 0 | - | 4.96 | 466,968 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,904 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,577 |
| Champions League Winners | 0 | - | 4.92 | 1,018,658 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 99,270 |
| European Diaspora - Top 11 Countries | 0 | - | 4.88 | 97,036 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 138,805 |
| Three Band Flags of Europe | 0 | - | 4.98 | 194,968 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,725 |
| Monarchies of Europe | 0 | - | 4.90 | 99,091 |
| European Countries with One Border | 0 | - | 4.97 | 184,109 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,826 |
| European Geography By Letter - B #2 | 0 | - | 4.87 | 89,325 |
| Federal Subjects of Russia | 0 | - | 4.95 | 150,038 |
| Countries That Border Russia | 0 | - | 4.98 | 465,099 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,631 |
| History of Austria | 0 | - | 4.70 | 17,993 |
| Austria Country Quiz | 0 | - | 4.57 | 60,148 |
| Belgium Country Quiz | 0 | - | 4.72 | 72,413 |
| France Country Quiz | 0 | - | 4.70 | 135,862 |
| Regions of France Map Quiz | 0 | - | 4.97 | 145,874 |
| Geography of the French Empire | 0 | - | 4.45 | 27,242 |
| The French Revolution | 0 | - | 4.47 | 24,175 |
| History of France | 0 | - | 4.61 | 57,767 |
| French History A-Z | 0 | - | 4.27 | 25,214 |
| States of Germany Map Quiz | 0 | - | 4.92 | 134,057 |
| States of Germany | 0 | - | 4.95 | 155,060 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,581 |
| Germany Immigration by Country | 0 | - | 4.86 | 81,859 |
| Regions of Italy | 0 | - | 4.92 | 77,323 |
| Italy Country Quiz | 0 | - | 4.77 | 124,277 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 34,003 |
| Monaco Country Quiz | 0 | - | 4.48 | 41,740 |
| Netherlands Country Quiz | 0 | - | 4.52 | 81,085 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,971 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,829 |
| The Vikings! | 0 | - | 4.46 | 28,433 |
| Sweden Immigration by Country | 0 | - | 4.53 | 56,454 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,459 |
| The Portuguese Empire | 0 | - | 4.58 | 12,120 |
| Spain Country Quiz | 0 | - | 4.44 | 129,464 |
| Regions of Spain Quiz | 0 | - | 4.91 | 115,683 |
| Switzerland Country Quiz | 0 | - | 4.52 | 63,753 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,963 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,696 |
| United Kingdom A-Z | 0 | - | 4.51 | 88,502 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,892 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,498 |
| Countries the UK Declared War On | 0 | - | 4.55 | 123,415 |
| Geography of the British Empire | 0 | - | 4.48 | 39,890 |
| Animals in British History | 0 | - | 4.43 | 26,130 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,879 |
| Counties of Wales | 0 | - | 4.63 | 39,684 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,733,219 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 192,093 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 194,144 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 128,038 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,420 |
| Top 10 European Countries by Coastline | 0 | - | 4.86 | 138,855 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 66,092 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 236,502 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 279,470 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 169,402 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 91,335 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 265,644 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 116,199 |
| Countries that Border Poland | 0 | - | 4.99 | 173,407 |
| Russia Country Quiz | 0 | - | 4.83 | 115,517 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,378 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 103,468 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,871 |
| Countries that Border Hungary | 0 | - | 4.98 | 105,133 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.85 | 35,674 |
| Countries Bordering Serbia | 0 | - | 4.96 | 93,255 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 39,035 |
| German Inventions | 0 | - | 3.91 | 30,290 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,697 |
| Roman to Greek God | 0 | - | 4.52 | 123,568 |
| History of Ireland | 0 | - | 4.39 | 31,511 |
| Italian History A-Z | 0 | - | 4.16 | 17,963 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,201 |
| Roman History by Picture | 0 | - | 4.46 | 26,621 |
| Byzantine History | 0 | - | 4.91 | 29,066 |
| Byzantine Emperors | 0 | - | 4.93 | 14,673 |
| History of The Netherlands | 0 | - | 4.46 | 17,580 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,360 |
| Finland Country Quiz | 0 | - | 4.51 | 60,110 |
| Norway Country Quiz | 0 | - | 4.45 | 77,951 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,450 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,182 |
| Spanish History A-Z | 0 | - | 4.37 | 19,543 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,798 |
| UK Immigration by Country | 0 | - | 4.94 | 141,953 |
| Arthurian Legend | 0 | - | 4.33 | 25,200 |
