| The Trojan War | 0 | - | 4.83 | 39,800 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,262 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,944 |
| Name that Greek Letter | 0 | - | 4.93 | 324,187 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,079 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,947 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,656 |
| Roman Emperors | 0 | - | 4.95 | 120,409 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,904 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,716 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 126,520 |
| Name the English Monarchs | 0 | - | 4.91 | 504,011 |
| The Life of Alexander the Great | 0 | - | 4.51 | 18,524 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,793 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,993 |
| Roman Names for Places | 0 | - | 4.62 | 58,404 |
| Ancient Greek Inventions | 0 | - | 4.18 | 16,372 |
| States of the German Confederation in 1848 | 0 | - | 4.90 | 32,202 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,939 |
| Medieval English History | 0 | - | 4.53 | 43,574 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,766 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,483 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,117 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,333 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 57,150 |
| Countries Bordering France | 0 | - | 4.83 | 403,580 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,709 |
| Ancient Greek Words | 0 | - | 4.93 | 111,920 |
| Seven Hills of Rome | 0 | - | 4.70 | 9,205 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,847 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,780 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,208 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 38,002 |
| Europe Map Quiz | 0 | - | 5.00 | 4,771,626 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,779 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,179 |
| Departments of France | 0 | - | 4.93 | 54,479 |
| Germany Country Quiz | 0 | - | 4.83 | 158,194 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,637 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,670 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,615 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,618 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,122 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,232 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,997 |
| England or Wales? | 0 | - | 4.94 | 45,804 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,590 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,859 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,667 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,969 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,287 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,387 |
| Greece Country Quiz | 0 | - | 4.74 | 66,373 |
| Ancient Greece A-Z | 0 | - | 4.60 | 23,179 |
| Counties of Ireland | 0 | - | 4.92 | 196,079 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,026 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,362 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,378 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,294 |
| Embarrassing Chapters in British History | 0 | - | 4.29 | 32,299 |
| History of Scotland | 0 | - | 4.51 | 21,128 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,807 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 97,012 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 429,095 |
| Kings of France Quiz | 0 | - | 4.20 | 32,819 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,029 |
| Countries that Beat Germany | 0 | - | 4.94 | 106,746 |
| Most-Mentioned Characters in the Iliad | 0 | - | 4.81 | 20,840 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,749 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,422 |
| Countries that Beat Italy | 0 | - | 4.85 | 54,656 |
| Countries that Beat Portugal | 0 | - | 4.86 | 59,517 |
| Countries that Beat Spain | 0 | - | 4.94 | 63,070 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,702 |
| English Royal Consorts | 0 | - | 4.38 | 37,414 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,597 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 365,070 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,706 |
| The Only European Country ... | 0 | - | 4.91 | 217,422 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,594 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,248,792 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,840 |
| History of Russia Quiz | 0 | - | 4.47 | 31,952 |
| French History Multiple Choice | 0 | - | 4.55 | 33,128 |
| Countries that Beat Greece | 0 | - | 4.53 | 49,061 |
| History of Italy | 0 | - | 4.55 | 32,055 |
| Geography of the Dutch Empire | 0 | - | 4.61 | 34,721 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,299 |
| Counties of England | 0 | - | 4.97 | 798,993 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,959 |
| Oldest Cities in the United Kingdom | 0 | - | 4.39 | 23,739 |
| History of London | 0 | - | 4.33 | 26,219 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,754 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 358,244 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,938 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,446 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,406 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,367 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,308 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 173,094 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,569 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,414 |
| Slavic Countries | 0 | - | 4.96 | 111,895 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,564 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 438,060 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,282 |
| UK Cities Map Quiz | 0 | - | 4.96 | 465,194 |
| The Reign of Henry VIII | 0 | - | 4.25 | 27,800 |
| Elizabeth I... or Elizabeth II? | 0 | - | 4.30 | 24,533 |
| Champions League Winners | 0 | - | 4.92 | 1,009,992 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 97,941 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,055 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,867 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,735 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,999 |
| Monarchies of Europe | 0 | - | 4.90 | 98,358 |
| European Countries with One Border | 0 | - | 4.97 | 183,133 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,906 |
| European Geography By Letter - B #2 | 0 | - | 4.86 | 86,825 |
| Federal Subjects of Russia | 0 | - | 4.95 | 148,037 |
| Countries That Border Russia | 0 | - | 4.98 | 462,854 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,105 |
| History of Austria | 0 | - | 4.70 | 17,906 |
| Austria Country Quiz | 0 | - | 4.57 | 59,845 |
| Belgium Country Quiz | 0 | - | 4.72 | 71,951 |
| France Country Quiz | 0 | - | 4.70 | 135,195 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,865 |
| Geography of the French Empire | 0 | - | 4.45 | 27,156 |
| The French Revolution | 0 | - | 4.47 | 24,064 |
| History of France | 0 | - | 4.59 | 57,279 |
| French History A-Z | 0 | - | 4.27 | 24,766 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,228 |
| States of Germany | 0 | - | 4.95 | 153,232 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,295 |
| Regions of Italy | 0 | - | 4.92 | 76,251 |
| Italy Country Quiz | 0 | - | 4.77 | 123,609 |
| Luxembourg Country Quiz | 0 | - | 4.78 | 33,825 |
| Monaco Country Quiz | 0 | - | 4.47 | 41,570 |
| Netherlands Country Quiz | 0 | - | 4.53 | 80,660 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,434 |
| Nordic Cities Map Quiz | 0 | - | 4.77 | 90,555 |
| The Vikings! | 0 | - | 4.46 | 28,368 |
| Sweden Immigration by Country | 0 | - | 4.55 | 56,215 |
| Portugal Country Quiz | 0 | - | 4.69 | 72,031 |
| The Portuguese Empire | 0 | - | 4.58 | 12,083 |
| Spain Country Quiz | 0 | - | 4.44 | 128,784 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,427 |
| Switzerland Country Quiz | 0 | - | 4.51 | 63,459 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,423 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,167 |
| United Kingdom A-Z | 0 | - | 4.52 | 88,163 |
| Largest Islands in the British Isles With a Map | 0 | - | 4.52 | 38,768 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,406 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,677 |
| Geography of the British Empire | 0 | - | 4.48 | 39,735 |
| Animals in British History | 0 | - | 4.43 | 26,043 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,757 |
| Counties of Wales | 0 | - | 4.63 | 39,387 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,708,885 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,116 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,368 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,272 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,191 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,523 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,647 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,945 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,394 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,647 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,381 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,138 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,058 |
| Countries that Border Poland | 0 | - | 4.99 | 172,620 |
| Russia Country Quiz | 0 | - | 4.83 | 114,707 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,989 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,528 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,472 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,437 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,417 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,674 |
| Most Popular Baby Girls Names in Germany | 0 | - | 4.51 | 38,870 |
| German Inventions | 0 | - | 3.91 | 30,252 |
| Embarrassing Chapters in German History | 0 | - | 3.40 | 12,650 |
| Roman to Greek God | 0 | - | 4.52 | 123,026 |
| History of Ireland | 0 | - | 4.39 | 31,287 |
| Italian History A-Z | 0 | - | 4.21 | 17,741 |
| The Life of Julius Caesar | 0 | - | 4.39 | 39,123 |
| Roman History by Picture | 0 | - | 4.46 | 26,500 |
| Byzantine History | 0 | - | 4.91 | 28,919 |
| Byzantine Emperors | 0 | - | 4.92 | 14,369 |
| History of The Netherlands | 0 | - | 4.46 | 17,484 |
| Denmark Country Quiz | 0 | - | 4.78 | 76,034 |
| Finland Country Quiz | 0 | - | 4.50 | 59,793 |
| Norway Country Quiz | 0 | - | 4.44 | 77,504 |
| Iceland Country Quiz | 0 | - | 4.69 | 43,248 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,271 |
| Spanish History A-Z | 0 | - | 4.37 | 19,323 |
| Countries Bordering Spain | 0 | - | 4.51 | 69,530 |
| UK Immigration by Country | 0 | - | 4.94 | 141,173 |
| Arthurian Legend | 0 | - | 4.33 | 25,132 |
| United Kingdom Country Quiz | 0 | - | 4.96 | 140,196 |
