| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,236,897 |
| US States Quiz | 0 | - | 5.00 | 12,291,047 |
| Biggest Cities in the United States | 0 | - | 4.92 | 709,025 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,340,436 |
| World Capitals Quiz | 0 | - | 5.00 | 3,925,347 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,145,993 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,168,435 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,831 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,179 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,954 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,833 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,188 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,240 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,361 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,898 |
| Most Populous Islands | 0 | - | 4.64 | 102,809 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,651 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,999 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,854 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,478,185 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,255,157 |
| Countries that Start with A | 0 | - | 4.96 | 1,632,183 |
| Countries that Start with B | 0 | - | 4.94 | 1,769,767 |
| Countries that Start with C | 0 | - | 4.95 | 1,402,280 |
| Countries that Start with S | 0 | - | 4.96 | 1,358,662 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,753 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,243 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,108 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,055 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,822 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,793 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,092 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,860 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,666 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,069 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,213 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,127 |
| Biggest Cities in France | 0 | - | 4.52 | 161,770 |
| Biggest Cities in Spain | 0 | - | 4.65 | 133,060 |
| Biggest Cities in Italy | 0 | - | 4.63 | 189,303 |
| Biggest Cities in California | 0 | - | 4.30 | 119,993 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 572,124 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,911 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,192 |
| Countries of Africa | 0 | - | 5.00 | 1,738,927 |
| Biggest Cities in Europe | 0 | - | 4.63 | 404,090 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,883 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,640 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,458 |
| Biggest Cities in China | 0 | - | 4.42 | 118,393 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,719 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,878 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 135,010 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,883 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,828 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,818 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,233 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,817 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,339 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,991 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,534 |
| Biggest Cities in India | 0 | - | 4.52 | 54,936 |
| Biggest Cities in Asia | 0 | - | 4.87 | 86,033 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,376 |
| Biggest City by Island | 0 | - | 4.49 | 42,266 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,179 |
| Biggest Cities in History | 0 | - | 4.47 | 70,693 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,886 |
| Random Capital to Country | 0 | - | 4.99 | 2,076,634 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,423 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,563 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,452 |
| All Country Flags of the World | 0 | - | 5.00 | 2,280,060 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,269 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,241 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,121 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,996 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,629 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.57 | 58,701 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,268 |
| Biggest City by Region | 0 | - | 4.50 | 29,190 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,292 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,885 |
| United States Map Quiz | 0 | - | 4.96 | 3,583,773 |
| Europe Map Quiz | 0 | - | 4.99 | 3,728,046 |
| Africa Map Quiz | 0 | - | 5.00 | 1,760,386 |
| South America Map Quiz | 0 | - | 4.99 | 1,258,931 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,334,246 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,251 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,845 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,051 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,731 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,400 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,843 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,829 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,688 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,036 |
| Islands by Largest City #2 | 0 | - | 4.54 | 23,921 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,117 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,282 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,417 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,710 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 34,006 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,343 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,573 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,878 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,343 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,423 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,200 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,883,866 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,397 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,754 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,363 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,425 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,855 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,589 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 34,005 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,791 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,793 |
| Countries with Megacities | 0 | - | 4.99 | 176,161 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,529 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,445 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,194 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,525 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,475 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,651,280 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,858 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,835 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,619 |
| Megacities on a World Map | 0 | - | 4.97 | 199,802 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,682 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,876 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,518 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,714 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,723 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,157 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,089 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,639 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,670 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,719 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,059 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,151 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,726 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 312,886 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,061 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,083 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,733 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,955 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 434,799 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,241 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,076 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 54,005 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,663 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,137 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,110 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,851 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,333 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,491 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,468 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,063 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,148 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,284 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,243 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,802 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 62,112 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,358 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,584 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,369 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,444 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,989 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,182 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,321 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,389 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,517 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,799 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,716 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,878 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,405 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,157 |
| Ten Southernmost Megacities | 0 | - | 4.68 | 32,435 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,482 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,018 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,976 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,087 |
| 500 Biggest US Cities | 0 | - | 4.88 | 76,099 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,465 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,893 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,395 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,299 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,967 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,348 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 51,222 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,569 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,660 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,084 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,714 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 27,534 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,074 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,521,387 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,150 |
