| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 33,998,635 |
| US States Quiz | 0 | - | 5.00 | 12,189,792 |
| Biggest Cities in the United States | 0 | - | 4.93 | 704,967 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,332,225 |
| World Capitals Quiz | 0 | - | 5.00 | 3,904,521 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,137,504 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,163,334 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,483 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 286,907 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,542 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,553 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.82 | 98,873 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,351 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,123 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 305,754 |
| Most Populous Islands | 0 | - | 4.63 | 102,483 |
| 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 | 68,566 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,451,567 |
| Countries that Start with A | 0 | - | 4.96 | 1,622,097 |
| Countries that Start with B | 0 | - | 4.94 | 1,759,588 |
| Countries that Start with C | 0 | - | 4.95 | 1,394,242 |
| Countries that Start with S | 0 | - | 4.97 | 1,350,638 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,407 |
| Biggest Cities in Poland | 0 | - | 4.73 | 39,943 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,619 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,540 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,457 |
| Biggest Cities Starting With H | 0 | - | 4.49 | 75,125 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,626 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,297 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,174 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,874 |
| Biggest U.S. Cities A-Z | 0 | - | 4.53 | 108,775 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,444 |
| Biggest Cities in France | 0 | - | 4.50 | 160,794 |
| Biggest Cities in Spain | 0 | - | 4.65 | 132,282 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,341 |
| Biggest Cities in California | 0 | - | 4.32 | 119,593 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 568,946 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,781 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 83,838 |
| Countries of Africa | 0 | - | 5.00 | 1,723,026 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,540 |
| Biggest Cities in Europe | 0 | - | 4.57 | 402,335 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,352 |
| Biggest Cities in Sweden | 0 | - | 4.67 | 24,442 |
| 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 | 126,237 |
| Biggest Cities in Germany | 0 | - | 4.94 | 225,463 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,106 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,577 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,669 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,505 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,662 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,044 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,253 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,090 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,501 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 172,597 |
| Biggest Cities in India | 0 | - | 4.52 | 54,653 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,548 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,012 |
| Biggest City by Island | 0 | - | 4.49 | 42,085 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,632 |
| Biggest Cities in History | 0 | - | 4.49 | 70,126 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,724 |
| Random Capital to Country | 0 | - | 4.99 | 2,065,989 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,124 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 121,999 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,151 |
| All Country Flags of the World | 0 | - | 5.00 | 2,254,878 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,084 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,055 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 23,928 |
| U.S. States with the Highest Population Density | 0 | - | 4.45 | 54,818 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,378 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,743 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,603 |
| Biggest City by Region | 0 | - | 4.50 | 28,961 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,021 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,708 |
| United States Map Quiz | 0 | - | 4.96 | 3,572,410 |
| Europe Map Quiz | 0 | - | 4.99 | 3,707,677 |
| Africa Map Quiz | 0 | - | 5.00 | 1,753,396 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,307,485 |
| Biggest European Cities by Century | 0 | - | 4.97 | 104,763 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,496 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,769 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,358 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 112,745 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 223,988 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,472 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,345 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,700 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,746 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,010 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.91 | 58,954 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,177 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,464 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,721 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 57,933 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,227 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,742 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,470 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,141 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,805 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,864,873 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,231 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,310 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 117,728 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 122,947 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,358 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,360 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,696 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,561 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 216,831 |
| Countries with Megacities | 0 | - | 4.99 | 158,135 |
| Countries of Europe by Population | 0 | - | 4.98 | 107,957 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,447 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,605 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 122,560 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.88 | 32,296 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,634,966 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,385 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.93 | 81,400 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,407 |
| Megacities on a World Map | 0 | - | 4.97 | 198,463 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 153,296 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,691 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 94,059 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 72,799 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,507 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,642 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 43,975 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 73,493 |
| 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 | 52,473 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,796 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,283 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 300,452 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,561 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,848 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,565 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,764 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 432,130 |
| Megacities on an Empty Map | 0 | - | 4.96 | 76,804 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,715 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,458 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,118 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,035 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,467 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 28,920 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 54,943 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 77,983 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,135 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,745 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,713 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,003 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 55,972 |
| Largest World Capitals with Exceptions | 0 | - | 4.65 | 37,135 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,861 |
| Most Populous Islands of Europe | 0 | - | 4.41 | 20,176 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,302 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,098 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,201 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,745 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,185 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,121 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,190 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,315 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 260,001 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,031 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,601 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.96 | 111,877 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,581 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,251 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,110 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,851 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,682 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,708 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,210 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,355 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,792 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 53,964 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,537 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 44,730 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,425 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,312 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,181 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,732 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,586 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,165 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,693 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,458,880 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 26,916 |
| Largest Nordic Cities on a Map | 0 | - | 4.48 | 15,446 |
