| The Trojan War | 0 | - | 4.83 | 39,811 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,303 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 649,168 |
| Name that Greek Letter | 0 | - | 4.93 | 324,233 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,088 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,952 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,666 |
| Roman Emperors | 0 | - | 4.95 | 120,445 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,926 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,720 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,577 |
| Name the English Monarchs | 0 | - | 4.91 | 504,181 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,525 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,798 |
| Geography of the Roman Empire | 0 | - | 4.56 | 52,000 |
| Roman Names for Places | 0 | - | 4.62 | 58,420 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,376 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,221 |
| Olympian Gods Quiz | 0 | - | 4.96 | 502,043 |
| Medieval English History | 0 | - | 4.53 | 43,579 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,795 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,637 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,150 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,367 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,174 |
| Countries Bordering France | 0 | - | 4.83 | 403,668 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,790 |
| Ancient Greek Words | 0 | - | 4.93 | 111,949 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,207 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,854 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,790 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,217 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,007 |
| Europe Map Quiz | 0 | - | 5.00 | 4,772,712 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,793 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,215 |
| Departments of France | 0 | - | 4.93 | 54,527 |
| Germany Country Quiz | 0 | - | 4.83 | 158,235 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,669 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,726 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,647 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,621 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,140 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,275 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 118,051 |
| England or Wales? | 0 | - | 4.94 | 45,814 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,598 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,881 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,683 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,977 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,291 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,459 |
| Greece Country Quiz | 0 | - | 4.74 | 66,387 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,182 |
| Counties of Ireland | 0 | - | 4.92 | 196,139 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,040 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,396 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,414 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,363 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,305 |
| History of Scotland | 0 | - | 4.51 | 21,135 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,821 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,032 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,245 |
| Kings of France Quiz | 0 | - | 4.20 | 32,829 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,034 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,782 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,850 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,816 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,436 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,677 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,541 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,093 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,743 |
| English Royal Consorts | 0 | - | 4.38 | 37,423 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,669 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,152 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,767 |
| The Only European Country ... | 0 | - | 4.91 | 217,531 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,665 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,249,325 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,221 |
| History of Russia Quiz | 0 | - | 4.47 | 31,957 |
| French History Multiple Choice | 0 | - | 4.55 | 33,135 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,072 |
| History of Italy | 0 | - | 4.55 | 32,062 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,727 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,310 |
| Counties of England | 0 | - | 4.97 | 799,278 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,969 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,747 |
| History of London | 0 | - | 4.33 | 26,226 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,774 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,403 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,971 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,479 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,502 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,388 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,545 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,411 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,622 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,453 |
| Slavic Countries | 0 | - | 4.96 | 111,934 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,579 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,194 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,296 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,285 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,805 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,536 |
| Champions League Winners | 0 | - | 4.92 | 1,010,294 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,988 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,074 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,901 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,771 |
| Pixelated Europe Map | 0 | - | 4.88 | 123,031 |
| Monarchies of Europe | 0 | - | 4.90 | 98,389 |
| European Countries with One Border | 0 | - | 4.97 | 183,167 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,949 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 87,134 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,139 |
| Countries That Border Russia | 0 | - | 4.98 | 462,938 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,139 |
| History of Austria | 0 | - | 4.70 | 17,913 |
| Austria Country Quiz | 0 | - | 4.57 | 59,856 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,966 |
| France Country Quiz | 0 | - | 4.70 | 135,227 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,903 |
| Geography of the French Empire | 0 | - | 4.45 | 27,160 |
| The French Revolution | 0 | - | 4.47 | 24,071 |
| History of France | 0 | - | 4.61 | 57,305 |
| French History A-Z | 0 | - | 4.27 | 24,781 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,260 |
| States of Germany | 0 | - | 4.95 | 153,328 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,311 |
| Regions of Italy | 0 | - | 4.92 | 76,311 |
| Italy Country Quiz | 0 | - | 4.77 | 123,644 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,832 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,577 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,676 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,464 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,565 |
| The Vikings! | 0 | - | 4.46 | 28,372 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,223 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,047 |
| The Portuguese Empire | 0 | - | 4.58 | 12,086 |
| Spain Country Quiz | 0 | - | 4.44 | 128,825 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,479 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,475 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,439 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,190 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,179 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,774 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,410 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,761 |
| Geography of the British Empire | 0 | - | 4.48 | 39,745 |
| Animals in British History | 0 | - | 4.43 | 26,045 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,762 |
| Counties of Wales | 0 | - | 4.63 | 39,395 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,709,995 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,290 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,390 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,298 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,199 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,534 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,661 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,050 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,480 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,747 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,433 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,470 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,114 |
| Countries that Border Poland | 0 | - | 4.99 | 172,649 |
| Russia Country Quiz | 0 | - | 4.83 | 114,738 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 83,001 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,631 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,506 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,453 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,425 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,687 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,877 |
| German Inventions | 0 | - | 3.91 | 30,254 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,652 |
| Roman to Greek God | 0 | - | 4.52 | 123,043 |
| History of Ireland | 0 | - | 4.39 | 31,297 |
| Italian History A-Z | 0 | - | 4.21 | 17,742 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,123 |
| Roman History by Picture | 0 | - | 4.46 | 26,505 |
| Byzantine History | 0 | - | 4.91 | 28,922 |
| Byzantine Emperors | 0 | - | 4.92 | 14,383 |
| History of The Netherlands | 0 | - | 4.46 | 17,491 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,048 |
| Finland Country Quiz | 0 | - | 4.50 | 59,805 |
| Norway Country Quiz | 0 | - | 4.44 | 77,526 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,256 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,303 |
| Spanish History A-Z | 0 | - | 4.37 | 19,324 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,537 |
| UK Immigration by Country | 0 | - | 4.94 | 141,199 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,257 |
