| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,096,905 |
| US States Quiz | 0 | - | 5.00 | 12,230,800 |
| Biggest Cities in the United States | 0 | - | 4.93 | 706,659 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,335,594 |
| World Capitals Quiz | 0 | - | 5.00 | 3,912,848 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,141,060 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,165,486 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,638 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,475 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,733 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,678 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,009 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,621 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,226 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,225 |
| Most Populous Islands | 0 | - | 4.63 | 102,644 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,470 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,692 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,686 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,462,207 |
| Countries that Start with A | 0 | - | 4.96 | 1,626,494 |
| Countries that Start with B | 0 | - | 4.94 | 1,764,009 |
| Countries that Start with C | 0 | - | 4.95 | 1,397,762 |
| Countries that Start with S | 0 | - | 4.97 | 1,354,098 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,558 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,066 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,843 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,787 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,620 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,330 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,849 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,538 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,396 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,961 |
| Biggest U.S. Cities A-Z | 0 | - | 4.52 | 108,989 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,726 |
| Biggest Cities in France | 0 | - | 4.52 | 161,230 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,614 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,711 |
| Biggest Cities in California | 0 | - | 4.30 | 119,746 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 570,344 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,831 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 83,995 |
| Countries of Africa | 0 | - | 5.00 | 1,729,641 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,651 |
| Biggest Cities in Europe | 0 | - | 4.56 | 403,123 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,649 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,531 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,217 |
| Biggest Cities in China | 0 | - | 4.42 | 118,001 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,447 |
| Biggest Cities in Germany | 0 | - | 4.94 | 225,986 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,373 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,724 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,742 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,558 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,728 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,130 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,493 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,177 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,618 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,165 |
| Biggest Cities in India | 0 | - | 4.51 | 54,772 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,827 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,276 |
| Biggest City by Island | 0 | - | 4.49 | 42,177 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,857 |
| Biggest Cities in History | 0 | - | 4.49 | 70,402 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,791 |
| Random Capital to Country | 0 | - | 4.99 | 2,070,583 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,253 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,236 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,267 |
| All Country Flags of the World | 0 | - | 5.00 | 2,265,293 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,165 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,138 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,016 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,893 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,468 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,818 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,771 |
| Biggest City by Region | 0 | - | 4.50 | 29,052 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 39,140 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,764 |
| United States Map Quiz | 0 | - | 4.96 | 3,577,160 |
| Europe Map Quiz | 0 | - | 4.99 | 3,716,392 |
| Africa Map Quiz | 0 | - | 5.00 | 1,756,260 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,319,351 |
| Biggest European Cities by Century | 0 | - | 4.96 | 104,957 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,646 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,871 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,516 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,152 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,375 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,655 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,498 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,858 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,835 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,051 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,088 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,324 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,562 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,843 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,126 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,388 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,795 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,844 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,270 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,986 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,873,372 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,298 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,489 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 117,998 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,154 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,565 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,474 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,810 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,644 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,236 |
| Countries with Megacities | 0 | - | 4.99 | 175,066 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,218 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,942 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,863 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,054 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,369 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,641,657 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,602 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,595 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,487 |
| Megacities on a World Map | 0 | - | 4.97 | 199,105 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 169,919 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,768 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,036 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,390 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,597 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,874 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,027 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,335 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,577 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,473 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.96 | 52,751 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,925 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,464 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 305,248 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,778 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,946 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,632 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,854 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 433,227 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,000 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,891 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,687 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,406 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,076 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,770 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,165 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,104 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,204 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,318 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,876 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,903 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,116 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,095 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,493 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,969 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,260 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,434 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,218 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,311 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,854 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,838 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,199 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,270 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,390 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 260,781 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,349 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,725 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,107 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,923 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,341 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,272 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,923 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,811 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,873 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,584 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,414 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,831 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,131 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,212 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,728 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,022 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,769 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,419 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,324 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,899 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,635 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,352 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,852 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,484,203 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,021 |
