| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,200,931 |
| US States Quiz | 0 | - | 5.00 | 12,275,458 |
| Biggest Cities in the United States | 0 | - | 4.92 | 708,448 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,339,286 |
| World Capitals Quiz | 0 | - | 5.00 | 3,922,168 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,144,611 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,167,708 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,791 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,007 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,908 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,809 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,147 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,160 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,330 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,762 |
| Most Populous Islands | 0 | - | 4.64 | 102,767 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,609 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,926 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,813 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,473,978 |
| Countries that Start with A | 0 | - | 4.96 | 1,630,737 |
| Countries that Start with B | 0 | - | 4.94 | 1,768,299 |
| Countries that Start with C | 0 | - | 4.95 | 1,401,139 |
| Countries that Start with S | 0 | - | 4.96 | 1,357,477 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,716 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,195 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,032 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,967 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,761 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,517 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,015 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,779 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,594 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,035 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,154 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,017 |
| Biggest Cities in France | 0 | - | 4.52 | 161,639 |
| Biggest Cities in Spain | 0 | - | 4.65 | 132,938 |
| Biggest Cities in Italy | 0 | - | 4.63 | 189,137 |
| Biggest Cities in California | 0 | - | 4.30 | 119,925 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 571,697 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,889 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,154 |
| Countries of Africa | 0 | - | 5.00 | 1,736,448 |
| Biggest Cities in The Netherlands | 0 | - | 4.44 | 35,641 |
| Biggest Cities in Europe | 0 | - | 4.63 | 403,860 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,828 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,610 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,394 |
| Biggest Cities in China | 0 | - | 4.43 | 118,300 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,660 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,683 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 134,945 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,843 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,809 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,797 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,209 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,762 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,296 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,730 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,448 |
| Biggest Cities in India | 0 | - | 4.52 | 54,891 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,979 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,350 |
| Biggest City by Island | 0 | - | 4.49 | 42,237 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,110 |
| Biggest Cities in History | 0 | - | 4.47 | 70,628 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,865 |
| Random Capital to Country | 0 | - | 4.99 | 2,075,118 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,381 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,473 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,410 |
| All Country Flags of the World | 0 | - | 5.00 | 2,276,274 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,241 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,211 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,095 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,970 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,592 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.57 | 58,399 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,199 |
| Biggest City by Region | 0 | - | 4.50 | 29,171 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,265 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,861 |
| United States Map Quiz | 0 | - | 4.96 | 3,582,103 |
| Europe Map Quiz | 0 | - | 4.99 | 3,724,747 |
| Africa Map Quiz | 0 | - | 5.00 | 1,759,247 |
| South America Map Quiz | 0 | - | 4.99 | 1,257,915 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,330,625 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,166 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,798 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,001 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,675 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,350 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,722 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,786 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,648 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,995 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,905 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,100 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,237 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,399 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,673 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,964 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,298 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,533 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,861 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,205 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,377 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,152 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,881,375 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,371 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,680 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,290 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,339 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,774 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,566 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 33,969 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,762 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,666 |
| Countries with Megacities | 0 | - | 4.99 | 176,019 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,451 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,318 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,118 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,430 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,452 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,648,915 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,802 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 81,775 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,580 |
| Megacities on a World Map | 0 | - | 4.97 | 199,706 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,344 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,848 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,459 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,658 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,698 |
| Most Populous Countries by Year | 0 | - | 4.77 | 79,100 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,077 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,599 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,648 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,646 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 52,985 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,093 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,659 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 312,397 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,984 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,045 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,708 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,936 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 434,456 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,183 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 52,024 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 53,930 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,617 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,119 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,021 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,796 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,283 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,420 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,438 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,018 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,086 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,232 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,210 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,743 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 62,075 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,336 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,547 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,329 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,407 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,957 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,102 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,291 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,363 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,501 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,588 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,630 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,849 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,335 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,105 |
| Ten Southernmost Megacities | 0 | - | 4.68 | 32,410 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,422 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,996 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,933 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,039 |
| 500 Biggest US Cities | 0 | - | 4.88 | 75,961 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,453 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,881 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,328 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,277 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,908 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,259 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 51,117 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,534 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,460 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,026 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,696 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 27,491 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,013 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,512,382 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,115 |
