| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,107,103 |
| US States Quiz | 0 | - | 5.00 | 12,234,824 |
| Biggest Cities in the United States | 0 | - | 4.93 | 706,855 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,335,978 |
| World Capitals Quiz | 0 | - | 5.00 | 3,913,711 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,141,393 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,165,690 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,649 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,538 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,749 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,689 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,028 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,646 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,236 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,273 |
| Most Populous Islands | 0 | - | 4.63 | 102,657 |
| Biggest Cities in Japan | 0 | - | 4.72 | 66,485 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,716 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,701 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,463,278 |
| Countries that Start with A | 0 | - | 4.96 | 1,626,899 |
| Countries that Start with B | 0 | - | 4.94 | 1,764,440 |
| Countries that Start with C | 0 | - | 4.95 | 1,398,096 |
| Countries that Start with S | 0 | - | 4.97 | 1,354,442 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,573 |
| Biggest Cities in Poland | 0 | - | 4.72 | 40,083 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,858 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,804 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,631 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,352 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,865 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,563 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,417 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 20,970 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,008 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,749 |
| Biggest Cities in France | 0 | - | 4.52 | 161,260 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,646 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,757 |
| Biggest Cities in California | 0 | - | 4.30 | 119,772 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 570,451 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,837 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,012 |
| Countries of Africa | 0 | - | 5.00 | 1,730,252 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,659 |
| Biggest Cities in Europe | 0 | - | 4.57 | 403,180 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,667 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,536 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,235 |
| Biggest Cities in China | 0 | - | 4.42 | 118,039 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,466 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,029 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,394 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,736 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,750 |
| Biggest Cities in Wisconsin | 0 | - | 4.35 | 20,563 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,733 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,139 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,513 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,186 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,626 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,193 |
| Biggest Cities in India | 0 | - | 4.51 | 54,783 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,843 |
| Islands by Largest City #1 | 0 | - | 4.44 | 78,282 |
| Biggest City by Island | 0 | - | 4.49 | 42,181 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,874 |
| Biggest Cities in History | 0 | - | 4.49 | 70,424 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,799 |
| Random Capital to Country | 0 | - | 4.99 | 2,071,019 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,262 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,259 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,285 |
| All Country Flags of the World | 0 | - | 5.00 | 2,266,341 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,173 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,148 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,022 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,898 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,479 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,824 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,792 |
| Biggest City by Region | 0 | - | 4.50 | 29,066 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 39,159 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,777 |
| United States Map Quiz | 0 | - | 4.96 | 3,577,596 |
| Europe Map Quiz | 0 | - | 4.99 | 3,717,190 |
| Africa Map Quiz | 0 | - | 5.00 | 1,756,609 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,320,397 |
| Biggest European Cities by Century | 0 | - | 4.96 | 104,971 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,652 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,879 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,534 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,170 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,407 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,665 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,508 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,871 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,837 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,061 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,102 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,332 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,567 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,858 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,142 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,401 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,800 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,873 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,278 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,999 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,874,047 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,303 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,504 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 118,046 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,173 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,586 |
| Cities of China (With Some Help) | 0 | - | 4.76 | 23,486 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 33,828 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,656 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,280 |
| Countries with Megacities | 0 | - | 4.99 | 175,261 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,230 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,987 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,899 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,188 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,381 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,642,315 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,614 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,608 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,495 |
| Megacities on a World Map | 0 | - | 4.97 | 199,159 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 170,963 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,778 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,114 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,436 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,603 |
| Most Populous Countries by Year | 0 | - | 4.76 | 78,895 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,033 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,384 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,583 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,493 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 52,769 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,939 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,486 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 307,379 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,802 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,955 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.56 | 34,642 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,865 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 433,340 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,020 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,901 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 53,706 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,428 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,082 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,809 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,332 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,115 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,331 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,887 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,920 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,132 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,103 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,542 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,977 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,271 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,440 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,225 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,321 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,864 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,869 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,211 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,286 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,403 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 260,877 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,383 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,731 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,134 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,944 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,349 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,285 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,930 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,818 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,895 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,626 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,418 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,838 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,148 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,216 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,743 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,044 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,798 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,430 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,331 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,909 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,638 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,364 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,868 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,486,921 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,036 |
| Largest Nordic Cities on a Map | 0 | - | 4.48 | 15,522 |
