| Places Where Winston Churchill Said We Would Fight the Nazis | 0 | - | 4.57 | 14,621 |
| Name the English Monarchs | 0 | - | 4.91 | 503,748 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 191,032 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,315 |
| Countries in World War I | 0 | - | 4.88 | 228,420 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 32,167 |
| Olympian Gods Quiz | 0 | - | 4.96 | 501,730 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,720 |
| Monarchies of Europe | 0 | - | 4.90 | 98,323 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,689 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 83,180 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 65,038 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,280 |
| Countries Invaded by the USSR | 0 | - | 4.29 | 94,140 |
| Ancient Greek Words | 0 | - | 4.93 | 111,861 |
| Countries Italy Declared War On | 0 | - | 4.75 | 43,402 |
| Battle to Country | 0 | - | 4.91 | 53,494 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,276 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,212 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 233,819 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,551 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 56,260 |
| Europe Map Quiz | 0 | - | 5.00 | 4,769,675 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,326 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 101,409 |
| The Reign of Napoleon | 0 | - | 4.54 | 39,017 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 648,657 |
| Name that Greek Letter | 0 | - | 4.93 | 324,109 |
| The Life of Winston Churchill | 0 | - | 4.16 | 11,851 |
| Countries in World War II | 0 | - | 4.54 | 914,468 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 428,889 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,563 |
| The Dictator Files: Vladimir Lenin | 0 | - | 4.45 | 26,860 |
| The Trojan War | 0 | - | 4.83 | 39,787 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 112,178 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 84,636 |
| Roman Emperors | 0 | - | 4.95 | 120,339 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 364,955 |
| Russia A-Z | 0 | - | 4.46 | 27,264 |
| Countries Closest to Spain A-Z | 0 | - | 4.98 | 108,399 |
| The Reign of Queen Elizabeth I | 0 | - | 4.53 | 31,838 |
| Houses of British Monarchs | 0 | - | 4.53 | 65,751 |
| Zone 1 London Underground Stations - With a Map | 0 | - | 4.90 | 52,462 |
| Important Cities in WWII | 0 | - | 4.42 | 93,587 |
| The American Civil War | 0 | - | 4.62 | 52,486 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,485 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,247,861 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,453 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 115,622 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 192,884 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 151,397 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 219,283 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 87,334 |
| The Only European Country ... | 0 | - | 4.91 | 217,297 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 311,135 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 172,742 |
| European Countries NOT in NATO | 0 | - | 4.90 | 61,512 |
| Countries of Europe After World War II | 0 | - | 4.99 | 188,668 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 89,524 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 128,365 |
| Slavic Countries | 0 | - | 4.96 | 111,854 |
| History of Russia Quiz | 0 | - | 4.47 | 31,945 |
| Biggest Trading Partners - Russia | 0 | - | 4.55 | 36,546 |
| Famous Ancient Romans | 0 | - | 4.70 | 85,549 |
| Mythology A-Z | 0 | - | 4.31 | 37,276 |
| History of Italy | 0 | - | 4.55 | 32,046 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 437,847 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,715 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 77,292 |
| Counties of England | 0 | - | 4.97 | 798,568 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,945 |
| The Thirteen Dwarves in the Hobbit | 0 | - | 4.81 | 28,709 |
| British History A-Z #1 | 0 | - | 4.45 | 46,569 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 357,913 |
| The Iraq War | 0 | - | 4.47 | 15,670 |
| Countries of the Japanese Empire | 0 | - | 4.97 | 104,353 |
| Communist Countries in History | 0 | - | 4.63 | 496,407 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 96,018 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 137,804 |
| Three Band Flags of Europe | 0 | - | 4.98 | 193,649 |
| Catholic Countries in Europe | 0 | - | 4.83 | 95,351 |
| European Secessionist Movements on a Map | 0 | - | 4.53 | 35,042 |
| Pixelated Europe Map | 0 | - | 4.88 | 122,962 |
| European Countries with One Border | 0 | - | 4.97 | 183,076 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,853 |
| European Geography By Letter - B #2 | 0 | - | 4.84 | 84,443 |
| Federal Subjects of Russia | 0 | - | 4.95 | 147,921 |
| Countries That Border Russia | 0 | - | 4.98 | 462,712 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 125,061 |
| Regions of France Map Quiz | 0 | - | 4.97 | 144,756 |
| Countries Bordering France | 0 | - | 4.83 | 403,435 |
| Kings of France Quiz | 0 | - | 4.20 | 32,807 |
| History of France | 0 | - | 4.59 | 57,243 |
| States of Germany Map Quiz | 0 | - | 4.92 | 133,110 |
| States of Germany | 0 | - | 4.95 | 153,086 |
| Germany Immigration by Country | 0 | - | 4.85 | 81,249 |
| Countries Closest to Germany A-Z | 0 | - | 4.98 | 27,370 |
| Countries Bordering Germany | 0 | - | 4.99 | 370,538 |
| Modern Day Countries of Nazi Germany on a Map | 0 | - | 4.97 | 144,917 |
| Figures from Greek Mythology | 0 | - | 4.91 | 187,610 |
| Regions of Italy | 0 | - | 4.92 | 76,197 |
| Netherlands Immigration by Country | 0 | - | 4.93 | 52,389 |
| Regions of Spain Quiz | 0 | - | 4.90 | 114,319 |
| Cantons of Switzerland | 0 | - | 4.98 | 51,379 |
| 100 Greatest Britons Quiz | 0 | - | 4.41 | 48,334 |
| Countries and Territories of the United Kingdom | 0 | - | 4.90 | 94,122 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,398 |
| English Royal Consorts | 0 | - | 4.38 | 37,403 |
| Countries the UK Declared War On | 0 | - | 4.55 | 122,640 |
| Geography of the British Empire | 0 | - | 4.48 | 39,733 |
| Champions League Winners | 0 | - | 4.91 | 1,009,451 |
| Monarchies of Asia | 0 | - | 4.97 | 71,199 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,995 |
| The Vietnam War | 0 | - | 4.44 | 35,570 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 107,058 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,404 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,779 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,562 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,362 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,353 |
| U.S. Five-Star Generals and Admirals | 0 | - | 4.33 | 8,338 |
| U.S. Cabinet Departments | 0 | - | 4.86 | 72,929 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,706,843 |
| Canadian Prime Ministers | 0 | - | 4.63 | 57,612 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,175 |
| Top 10 European Countries by Coastline | 0 | - | 4.87 | 138,492 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,967 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,746 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,593 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,931 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 277,299 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,873 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 114,992 |
| Countries that Border Poland | 0 | - | 4.99 | 172,566 |
| Russia Country Quiz | 0 | - | 4.83 | 114,669 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,961 |
| Croatia Country Quiz | 0 | - | 4.83 | 43,451 |
| Countries that Border Hungary | 0 | - | 4.98 | 104,392 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,407 |
| Countries Bordering Serbia | 0 | - | 4.96 | 92,632 |
| History of Austria | 0 | - | 4.70 | 17,900 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,845 |
| Andorra Country Quiz | 0 | - | 4.91 | 31,756 |
| Countries Bordering Austria | 0 | - | 4.97 | 118,633 |
| France Cities Map Quiz | 0 | - | 4.96 | 167,081 |
| Departments of France | 0 | - | 4.93 | 54,410 |
| Geography of the French Empire | 0 | - | 4.45 | 27,151 |
| The French Revolution | 0 | - | 4.47 | 24,053 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,953 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 72,267 |
| Germany Country Quiz | 0 | - | 4.83 | 158,137 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 126,579 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 97,259 |
| German History A-Z | 0 | - | 4.49 | 24,650 |
| Ancient Greek Trivia | 0 | - | 4.62 | 67,064 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,945 |
| Greek Mythology General Knowledge #2 | 0 | - | 4.59 | 73,854 |
| Ancient Greece - Multiple Choice | 0 | - | 4.54 | 41,701 |
| Counties of Ireland | 0 | - | 4.92 | 195,925 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 149,621 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 152,277 |
| Italian History A-Z | 0 | - | 4.21 | 17,736 |
| Countries Bordering Italy | 0 | - | 4.94 | 101,004 |
| Countries Closest to Italy | 0 | - | 4.97 | 198,295 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,607 |
| Roman History Vocabulary | 0 | - | 4.40 | 57,641 |
| Ancient Roman Trivia #2 | 0 | - | 4.57 | 38,783 |
| Geography of the Roman Empire | 0 | - | 4.56 | 51,986 |
| Roman History by Picture | 0 | - | 4.46 | 26,492 |
| Roman Names for Places | 0 | - | 4.62 | 58,388 |
| Byzantine History | 0 | - | 4.91 | 28,907 |
| Byzantine Emperors | 0 | - | 4.92 | 14,345 |
| History of The Netherlands | 0 | - | 4.46 | 17,475 |
| The Vikings! | 0 | - | 4.46 | 28,367 |
| The Portuguese Empire | 0 | - | 4.58 | 12,081 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 97,085 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 186,122 |
| Geography of the Spanish Empire | 0 | - | 4.49 | 37,214 |
| Spanish History A-Z | 0 | - | 4.37 | 19,320 |
| Countries Closest to Spain | 0 | - | 4.96 | 227,312 |
| British Acronyms | 0 | - | 4.40 | 45,843 |
| British Monopoly Board | 0 | - | 4.52 | 41,190 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 117,937 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 131,201 |
| Medieval English History | 0 | - | 4.53 | 43,564 |
| British History Multiple Choice #1 | 0 | - | 4.46 | 55,200 |
| British History Multiple Choice #2 | 0 | - | 4.42 | 37,996 |
| The Reign of Queen Elizabeth II | 0 | - | 4.36 | 35,872 |
| World Capitals Closest to London | 0 | - | 4.88 | 110,780 |
| 50 Busiest Air Routes from London | 0 | - | 4.87 | 96,975 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,740 |
| England or Wales? | 0 | - | 4.94 | 45,783 |
| All UEFA Champions League Teams Ever | 0 | - | 4.85 | 130,926 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,079 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,350 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,302 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,048 |
| The Persian Gulf War | 0 | - | 4.02 | 8,460 |
| Countries that Have Won the Most Battles | 0 | - | 4.02 | 39,643 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,182 |
