| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 33,996,916 |
| US States Quiz | 0 | - | 5.00 | 12,189,046 |
| Biggest Cities in the United States | 0 | - | 4.93 | 704,944 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,332,178 |
| World Capitals Quiz | 0 | - | 5.00 | 3,904,402 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,137,449 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,163,295 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,482 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 286,903 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,537 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,551 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.82 | 98,871 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,345 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,123 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 305,748 |
| Most Populous Islands | 0 | - | 4.63 | 102,478 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,336 |
| Biggest US Cities by Decade | 0 | - | 4.93 | 132,477 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,564 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,451,402 |
| Countries that Start with A | 0 | - | 4.96 | 1,622,049 |
| Countries that Start with B | 0 | - | 4.94 | 1,759,529 |
| Countries that Start with C | 0 | - | 4.95 | 1,394,193 |
| Countries that Start with S | 0 | - | 4.97 | 1,350,596 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,403 |
| Biggest Cities in Poland | 0 | - | 4.73 | 39,943 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,612 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,533 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,450 |
| Biggest Cities Starting With H | 0 | - | 4.49 | 75,118 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,621 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,289 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,167 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,873 |
| Biggest U.S. Cities A-Z | 0 | - | 4.53 | 108,771 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,437 |
| Biggest Cities in France | 0 | - | 4.50 | 160,788 |
| Biggest Cities in Spain | 0 | - | 4.65 | 132,280 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,335 |
| Biggest Cities in California | 0 | - | 4.32 | 119,589 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 568,927 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,779 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 83,837 |
| Countries of Africa | 0 | - | 5.00 | 1,722,893 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,540 |
| Biggest Cities in Europe | 0 | - | 4.57 | 402,325 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,327 |
| Biggest Cities in Sweden | 0 | - | 4.67 | 24,441 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,057 |
| Biggest Cities in China | 0 | - | 4.41 | 117,555 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,236 |
| Biggest Cities in Germany | 0 | - | 4.94 | 225,456 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,102 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,574 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,669 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,504 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,659 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,042 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,251 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,090 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,500 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 172,591 |
| Biggest Cities in India | 0 | - | 4.52 | 54,650 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,546 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,011 |
| Biggest City by Island | 0 | - | 4.49 | 42,085 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,624 |
| Biggest Cities in History | 0 | - | 4.49 | 70,126 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,723 |
| Random Capital to Country | 0 | - | 4.99 | 2,065,926 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,120 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 121,997 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,151 |
| All Country Flags of the World | 0 | - | 5.00 | 2,254,712 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,081 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,054 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 23,928 |
| U.S. States with the Highest Population Density | 0 | - | 4.45 | 54,816 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,377 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,743 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,601 |
| Biggest City by Region | 0 | - | 4.50 | 28,958 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,018 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,707 |
| United States Map Quiz | 0 | - | 4.96 | 3,572,268 |
| Europe Map Quiz | 0 | - | 4.99 | 3,707,564 |
| Africa Map Quiz | 0 | - | 5.00 | 1,753,359 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,307,303 |
| Biggest European Cities by Century | 0 | - | 4.97 | 104,758 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,493 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,767 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,355 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 112,745 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 223,977 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,470 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,343 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,696 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,744 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,010 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.91 | 58,949 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,172 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,462 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,719 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 57,930 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,223 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,741 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,464 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,138 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,804 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,864,746 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,229 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,310 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 117,725 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 122,945 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,357 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,359 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,694 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,558 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 216,819 |
| Countries with Megacities | 0 | - | 4.99 | 158,132 |
| Countries of Europe by Population | 0 | - | 4.98 | 107,953 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,403 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,594 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 122,547 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.88 | 32,294 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,634,861 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,383 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.93 | 81,399 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,407 |
| Megacities on a World Map | 0 | - | 4.97 | 198,454 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 153,288 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,691 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 94,055 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 72,793 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,506 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,639 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 43,974 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 73,491 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,501 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,297 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.96 | 52,470 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,793 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,277 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 300,440 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,557 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,844 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,565 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,763 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 432,109 |
| Megacities on an Empty Map | 0 | - | 4.96 | 76,801 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,710 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,456 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,115 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,033 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,462 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 28,919 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 54,941 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 77,978 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,134 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,738 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,709 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,002 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 55,969 |
| Largest World Capitals with Exceptions | 0 | - | 4.65 | 37,127 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,860 |
| Most Populous Islands of Europe | 0 | - | 4.41 | 20,174 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,298 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,096 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,199 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,744 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,145 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,119 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,188 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,312 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 259,997 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,028 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,598 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.96 | 111,877 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,553 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,250 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,105 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,850 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,679 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,703 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,200 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,354 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,792 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 53,963 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,154 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,535 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 44,728 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,420 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,309 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,179 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,731 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,586 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,163 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,692 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,458,446 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 26,916 |
