| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,146,132 |
| US States Quiz | 0 | - | 5.00 | 12,251,472 |
| Biggest Cities in the United States | 0 | - | 4.93 | 707,503 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,337,364 |
| World Capitals Quiz | 0 | - | 5.00 | 3,917,308 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,142,647 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,166,601 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,704 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,745 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,824 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,744 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,084 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,007 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,275 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,496 |
| Most Populous Islands | 0 | - | 4.64 | 102,712 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,531 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,774 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,753 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,467,381 |
| Countries that Start with A | 0 | - | 4.96 | 1,628,546 |
| Countries that Start with B | 0 | - | 4.94 | 1,766,093 |
| Countries that Start with C | 0 | - | 4.95 | 1,399,442 |
| Countries that Start with S | 0 | - | 4.97 | 1,355,739 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,633 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,134 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 86,953 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,872 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,692 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,442 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,931 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,665 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,495 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,003 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,080 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,867 |
| Biggest Cities in France | 0 | - | 4.52 | 161,403 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,760 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,911 |
| Biggest Cities in California | 0 | - | 4.30 | 119,843 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 570,958 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,858 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,077 |
| Countries of Africa | 0 | - | 5.00 | 1,732,935 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,689 |
| Biggest Cities in Europe | 0 | - | 4.63 | 403,475 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,733 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,567 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,314 |
| Biggest Cities in China | 0 | - | 4.43 | 118,166 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,563 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,325 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,492 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,785 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,769 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,767 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,164 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,632 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,230 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,673 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,313 |
| Biggest Cities in India | 0 | - | 4.52 | 54,822 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,913 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,316 |
| Biggest City by Island | 0 | - | 4.49 | 42,206 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,965 |
| Biggest Cities in History | 0 | - | 4.49 | 70,523 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,827 |
| Random Capital to Country | 0 | - | 4.99 | 2,072,637 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,306 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,352 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,336 |
| All Country Flags of the World | 0 | - | 5.00 | 2,270,524 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,201 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,166 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,057 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,931 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,524 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 55,315 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,051 |
| Biggest City by Region | 0 | - | 4.50 | 29,127 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,206 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,821 |
| United States Map Quiz | 0 | - | 4.96 | 3,579,409 |
| Europe Map Quiz | 0 | - | 4.99 | 3,720,277 |
| Africa Map Quiz | 0 | - | 5.00 | 1,757,682 |
| South America Map Quiz | 0 | - | 4.99 | 1,256,507 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,324,885 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,052 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,714 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,916 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,602 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,238 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,538 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,714 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,577 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,921 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,874 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,077 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,163 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,361 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,603 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,900 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,192 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,457 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,823 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,005 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,313 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,060 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,877,154 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,325 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,572 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,163 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,248 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,660 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,521 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 33,896 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,713 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,458 |
| Countries with Megacities | 0 | - | 4.99 | 175,712 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,339 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,123 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,982 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,290 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,415 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,645,175 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,688 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,684 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,530 |
| Megacities on a World Map | 0 | - | 4.97 | 199,488 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 173,346 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,803 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,319 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,558 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,650 |
| Most Populous Countries by Year | 0 | - | 4.78 | 78,972 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,051 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,508 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,611 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,558 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 52,862 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,002 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,557 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 310,885 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,884 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,989 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,670 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,901 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 433,858 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,071 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,951 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 53,817 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,508 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,099 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 20,887 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,651 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,179 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,304 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,378 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,937 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,967 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,151 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,647 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 62,015 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,303 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,482 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,263 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,367 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,898 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,970 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,244 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,325 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,456 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,241 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,517 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,790 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,223 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,002 |
| Ten Southernmost Megacities | 0 | - | 4.68 | 32,375 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,346 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,958 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,858 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,961 |
| 500 Biggest US Cities | 0 | - | 4.88 | 75,755 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,429 |
| Saint Lucia Country Quiz | 0 | - | 4.65 | 13,851 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,240 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,243 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,825 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,132 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,928 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,473 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,396 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,959 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,661 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 27,420 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,923 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,497,077 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,069 |
| Largest Nordic Cities on a Map | 0 | - | 4.48 | 15,548 |
