| Croatia Country Quiz | 0 | - | 4.83 | 42,800 |
| French Geography Quiz #1 | 0 | - | 4.89 | 34,495 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,318,780 |
| Countries that Beat Russia | 0 | - | 4.84 | 81,803 |
| Country Quiz on a Map - France | 0 | - | 4.98 | 46,555 |
| Country Quiz on a Map - Germany | 0 | - | 4.95 | 34,409 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 48,979 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,810 |
| Countries of Europe in 1848 | 0 | - | 4.98 | 75,316 |
| Countries of Europe in 1870 with a Map | 0 | - | 4.95 | 63,272 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,010 |
| Countries of Europe in 1360 with a Map | 0 | - | 4.99 | 55,930 |
| Federal Subjects of Russia | 0 | - | 4.94 | 143,662 |
| Countries That Border Russia | 0 | - | 4.98 | 458,623 |
| States of the German Confederation in 1848 | 0 | - | 4.89 | 31,490 |
| Europe Map Quiz | 0 | - | 5.00 | 4,728,289 |
| Europe Geography Quiz #1 | 0 | - | 4.54 | 70,965 |
| Europe Geography Quiz #2 | 0 | - | 4.57 | 71,586 |
| Europe Geography Quiz #4 | 0 | - | 4.57 | 69,914 |
| Europe Geography Quiz #5 | 0 | - | 4.54 | 60,957 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,285 |
| European Map without 10 Random Countries | 0 | - | 4.97 | 274,015 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 164,953 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 256,389 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 113,070 |
| Russia Country Quiz | 0 | - | 4.85 | 113,576 |
| Bosnia and Herzegovina Country Quiz | 0 | - | 4.86 | 35,004 |
| Biggest Countries in Europe in 1700 | 0 | - | 4.73 | 58,104 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 88,886 |
| Countries that Border Poland | 0 | - | 4.99 | 171,244 |
| Non-Bordering Countries Closest to Russia | 0 | - | 4.91 | 82,338 |
| Countries that Border Hungary | 0 | - | 4.98 | 103,630 |
| Countries Bordering Serbia | 0 | - | 4.96 | 91,665 |
| Name the English Monarchs | 0 | - | 4.92 | 497,502 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 424,921 |
| North Macedonia Country Quiz | 0 | - | 4.81 | 27,588 |
| Moldova Country Quiz | 0 | - | 4.81 | 30,520 |
| The Trojan War | 0 | - | 4.83 | 39,400 |
| Letters of the Greek Alphabet | 0 | - | 4.97 | 641,345 |
| Name that Greek Letter | 0 | - | 4.94 | 321,469 |
| Greek Mythology General Knowledge #1 | 0 | - | 4.85 | 110,390 |
| Ancient Roman Trivia #1 | 0 | - | 4.85 | 83,989 |
| Roman Emperors | 0 | - | 4.95 | 118,336 |
| Countries that Beat Portugal | 0 | - | 4.86 | 58,609 |
| Topological Map of Asia Quiz | 0 | - | 4.81 | 19,846 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,782 |
| Europe Cities Map Quiz | 0 | - | 4.99 | 362,113 |
| Europe Geography Quiz #3 | 0 | - | 4.34 | 63,376 |
| 10 Easternmost Countries in Europe | 0 | - | 4.89 | 113,379 |
| The Only European Country ... | 0 | - | 4.91 | 213,560 |
| European Countries NOT in NATO | 0 | - | 4.87 | 59,361 |
| Countries Bordering Ukraine, with an Empty Map | 0 | - | 4.86 | 95,849 |
| Olympian Gods Quiz | 0 | - | 4.96 | 495,115 |
| 101 Figures from Greek Mythology | 0 | - | 4.99 | 124,108 |
| Countries that Beat Iceland | 0 | - | 4.81 | 42,292 |
| Flags of Europe Quiz | 0 | - | 4.99 | 1,224,681 |
| History of Russia Quiz | 0 | - | 4.49 | 31,774 |
| Ancient Greek Words | 0 | - | 4.92 | 110,579 |
| History of Italy | 0 | - | 4.55 | 31,801 |
| Geography of the Dutch Empire | 0 | - | 4.62 | 34,467 |
| Countries of the Spanish Empire | 0 | - | 4.52 | 76,964 |
| Counties of England | 0 | - | 4.97 | 788,523 |
| Invasions of Great Britain | 0 | - | 4.51 | 59,360 |
| British History Quiz for Dummies | 0 | - | 4.70 | 78,043 |
| "Big Five" European Soccer Champions Since 2000 | 0 | - | 4.97 | 349,306 |
| Africa Geography Quiz #2 | 0 | - | 4.59 | 32,789 |
| 10 Biggest European Countries by Area | 0 | - | 4.99 | 191,613 |
| 10 Westernmost Countries in Europe | 0 | - | 4.96 | 150,217 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 216,095 |
| European Landmarks Map Quiz | 0 | - | 4.97 | 86,416 |
| Countries of Europe with an Empty Map | 0 | - | 5.00 | 307,603 |
| All First-Level Subdivisions of Europe on a Map | 0 | - | 4.98 | 167,594 |
| Countries with Territory in the Balkans | 0 | - | 4.96 | 88,179 |
| Eastern Europe Map Quiz | 0 | - | 4.91 | 127,087 |
| Slavic Countries | 0 | - | 4.96 | 110,787 |
| Most Mentioned Allies of Russia | 0 | - | 4.49 | 37,776 |
| Most Mentioned Enemies of Russia | 0 | - | 4.69 | 89,515 |
| French Geography Quiz #2 | 0 | - | 4.62 | 23,083 |
| States of the Holy Roman Empire in 1356 | 0 | - | 4.97 | 72,359 |
| Roman Numeral Decoding Quiz | 0 | - | 4.94 | 433,203 |
| Two Letter Roman Numerals | 0 | - | 4.97 | 55,558 |
| Geography of Spain | 0 | - | 4.59 | 21,943 |
| Foods in a Full English Breakfast | 0 | - | 4.46 | 101,881 |
| Champions League Winners | 0 | - | 4.92 | 995,318 |
| Asia Geography Quiz #1 | 0 | - | 4.78 | 53,309 |
| Asia Geography Quiz #2 | 0 | - | 4.56 | 48,306 |
| Asia Geography Quiz #3 | 0 | - | 4.49 | 32,140 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,277 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,274 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 94,975 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,245 |
| Three Band Flags of Europe | 0 | - | 4.98 | 191,705 |
| Pixelated Europe Map | 0 | - | 4.88 | 121,693 |
| Monarchies of Europe | 0 | - | 4.90 | 97,234 |
| European Countries with One Border | 0 | - | 4.97 | 181,499 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 178,003 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,140 |
| Albania Country Quiz | 0 | - | 4.54 | 38,611 |
| Russian Inventions | 0 | - | 4.39 | 12,887 |
| Czech Republic Country Quiz | 0 | - | 4.52 | 41,823 |
| Ukraine Country Quiz | 0 | - | 4.42 | 47,271 |
| Hungary Country Quiz | 0 | - | 4.49 | 42,989 |
| Romania Country Quiz | 0 | - | 4.63 | 53,308 |
| Countries Formerly in Yugoslavia | 0 | - | 4.95 | 124,118 |
| Serbia Country Quiz | 0 | - | 4.44 | 34,747 |
| History of Austria | 0 | - | 4.70 | 17,738 |
| Regions of France Map Quiz | 0 | - | 4.97 | 143,025 |
| Geography of the French Empire | 0 | - | 4.48 | 26,916 |
| The French Revolution | 0 | - | 4.46 | 23,754 |
| Countries Bordering France | 0 | - | 4.85 | 397,394 |
| History of France | 0 | - | 4.59 | 55,914 |
| States of Germany Map Quiz | 0 | - | 4.91 | 131,582 |
| States of Germany | 0 | - | 4.96 | 149,843 |
| Biggest Cities in Germany in 1910 | 0 | - | 4.41 | 23,373 |
| Germany Immigration by Country | 0 | - | 4.84 | 79,933 |
| Countries Bordering Germany | 0 | - | 4.99 | 366,775 |
| Figures from Greek Mythology | 0 | - | 4.91 | 184,728 |
| Regions of Italy | 0 | - | 4.92 | 74,611 |
| Netherlands Immigration by Country | 0 | - | 4.94 | 43,749 |
| The Vikings! | 0 | - | 4.45 | 28,236 |
| The Portuguese Empire | 0 | - | 4.54 | 11,982 |
| Regions of Spain Quiz | 0 | - | 4.90 | 112,173 |
| Cantons of Switzerland | 0 | - | 4.98 | 50,068 |
| Countries and Territories of the United Kingdom | 0 | - | 4.89 | 92,855 |
| Wives of King Henry VIII | 0 | - | 4.55 | 53,156 |
| Countries the UK Declared War On | 0 | - | 4.61 | 121,716 |
| Geography of the British Empire | 0 | - | 4.48 | 39,464 |
| 10 Closest Megacities to London | 0 | - | 4.90 | 17,393 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 134,263 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,737 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,001 |
| Name a Valid African Country | 0 | - | 4.98 | 152,836 |
| Oceania Geography Quiz | 0 | - | 4.55 | 21,970 |
| South American Geography Quiz #2 | 0 | - | 4.61 | 39,178 |
| South American Geography Quiz #1 | 0 | - | 4.73 | 32,458 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 173,056 |
| U.S. Presidents Quiz | 0 | - | 5.00 | 3,649,838 |
| Deadliest U.S. Wars | 0 | - | 4.89 | 189,153 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,183 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,050 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 70,760 |
| Top 10 European Countries by Coastline | 0 | - | 4.89 | 137,788 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 64,753 |
| Topological Map of Mainland Europe | 0 | - | 4.39 | 28,534 |
| Russian History A-Z | 0 | - | 4.38 | 30,503 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 98,213 |
| Latvia Country Quiz | 0 | - | 4.75 | 31,740 |
| Countries Bordering Austria | 0 | - | 4.97 | 117,682 |
| France Cities Map Quiz | 0 | - | 4.96 | 165,085 |
| Departments of France | 0 | - | 4.93 | 52,697 |
| Countries that Visit France the Most | 0 | - | 4.85 | 45,480 |
| Countries Closest to Metropolitan France | 0 | - | 4.89 | 71,763 |
| Germany Country Quiz | 0 | - | 4.82 | 156,425 |
| Germany Cities Map Quiz | 0 | - | 4.87 | 125,073 |
| Countries With the Most German Speakers | 0 | - | 4.89 | 94,089 |
| Ancient Greek Trivia | 0 | - | 4.62 | 66,744 |
| Geography of Ancient Greece | 0 | - | 4.69 | 31,756 |
| Counties of Ireland | 0 | - | 4.92 | 192,856 |
| Italy Country Quiz | 0 | - | 4.82 | 122,096 |
| Regions of Italy Map Quiz | 0 | - | 4.96 | 148,270 |
| Italy Cities Map Quiz | 0 | - | 4.97 | 151,000 |
| Countries Bordering Italy | 0 | - | 4.94 | 100,388 |
| Countries Italy Declared War On | 0 | - | 4.75 | 42,916 |
| Countries Closest to Italy | 0 | - | 4.97 | 196,192 |
| Countries Surrounding Rome | 0 | - | 4.97 | 49,346 |
| Byzantine History | 0 | - | 4.91 | 28,590 |
| History of The Netherlands | 0 | - | 4.46 | 17,299 |
| Spain Cities Map Quiz | 0 | - | 4.87 | 95,884 |
| Regions of Spain Map Quiz | 0 | - | 4.95 | 184,538 |
| Countries Closest to Spain | 0 | - | 4.96 | 225,158 |
| British Groups of Things | 0 | - | 4.25 | 82,659 |
| United Kingdom Decoder | 0 | - | 4.29 | 39,942 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,145 |
| Counties of the UK and Ireland | 0 | - | 4.98 | 128,469 |
| Medieval English History | 0 | - | 4.53 | 43,295 |
| World Capitals Closest to London | 0 | - | 4.87 | 109,628 |
| 50 Busiest Air Routes from London | 0 | - | 4.86 | 95,714 |
| England or Wales? | 0 | - | 4.94 | 45,285 |
| All UEFA Champions League Teams Ever | 0 | - | 4.84 | 128,326 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,589 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,465 |
| Name a Valid Asian Country | 0 | - | 4.98 | 119,960 |
| Topological Map of Africa Quiz | 0 | - | 4.80 | 21,107 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,417 |
| U.S. History for Dummies | 0 | - | 4.47 | 82,420 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,803 |
| Anglo-Saxon and Viking Kings of England | 0 | - | 4.74 | 12,079 |
| European Countries with the Fewest Overnight Visitors | 0 | - | 4.78 | 41,596 |
| Top 20 Football Clubs in Europe | 0 | - | 4.48 | 112,849 |
| Which City in Europe? | 0 | - | 4.83 | 106,563 |
| The Only Remaining European Country . . . | 0 | - | 4.41 | 63,735 |
| Slovenia Country Quiz | 0 | - | 4.52 | 30,445 |
| Poland Country Quiz | 0 | - | 4.22 | 62,613 |
| Slovakia Country Quiz | 0 | - | 4.64 | 30,402 |
| Bulgaria Country Quiz | 0 | - | 4.55 | 30,643 |
| Montenegro Country Quiz | 0 | - | 4.60 | 23,514 |
| Belarus Country Quiz | 0 | - | 4.74 | 27,207 |
| Andorra Country Quiz | 0 | - | 4.90 | 31,361 |
| French History Multiple Choice | 0 | - | 4.55 | 32,860 |
| Countries that Beat Germany | 0 | - | 4.95 | 105,273 |
