| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,050,681 |
| US States Quiz | 0 | - | 5.00 | 12,211,199 |
| Biggest Cities in the United States | 0 | - | 4.93 | 705,813 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,333,944 |
| World Capitals Quiz | 0 | - | 5.00 | 3,909,128 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,139,296 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,164,461 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,563 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,207 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,644 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,622 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 98,943 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,503 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,185 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,000 |
| Most Populous Islands | 0 | - | 4.64 | 102,559 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,402 |
| Biggest US Cities by Decade | 0 | - | 4.93 | 132,587 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,634 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,457,089 |
| Countries that Start with A | 0 | - | 4.96 | 1,624,509 |
| Countries that Start with B | 0 | - | 4.94 | 1,762,046 |
| Countries that Start with C | 0 | - | 4.95 | 1,396,178 |
| Countries that Start with S | 0 | - | 4.97 | 1,352,604 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,479 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,015 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,738 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,681 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,550 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,237 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,745 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,439 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,310 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,920 |
| Biggest U.S. Cities A-Z | 0 | - | 4.53 | 108,876 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,584 |
| Biggest Cities in France | 0 | - | 4.51 | 161,019 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,450 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,524 |
| Biggest Cities in California | 0 | - | 4.30 | 119,686 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 569,694 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,810 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 83,916 |
| Countries of Africa | 0 | - | 5.00 | 1,726,577 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,605 |
| Biggest Cities in Europe | 0 | - | 4.56 | 402,747 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,544 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,479 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,144 |
| Biggest Cities in China | 0 | - | 4.41 | 117,789 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,356 |
| Biggest Cities in Germany | 0 | - | 4.94 | 225,744 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,245 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,647 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,713 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,544 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,701 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,086 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,379 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,131 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,567 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,036 |
| Biggest Cities in India | 0 | - | 4.52 | 54,717 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,746 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,234 |
| Biggest City by Island | 0 | - | 4.49 | 42,127 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,761 |
| Biggest Cities in History | 0 | - | 4.49 | 70,294 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,756 |
| Random Capital to Country | 0 | - | 4.99 | 2,068,404 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,184 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,133 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,208 |
| All Country Flags of the World | 0 | - | 5.00 | 2,260,468 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,127 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,100 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 23,976 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,863 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,421 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,780 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,689 |
| Biggest City by Region | 0 | - | 4.50 | 29,003 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 39,086 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,732 |
| United States Map Quiz | 0 | - | 4.96 | 3,574,843 |
| Europe Map Quiz | 0 | - | 4.99 | 3,711,827 |
| Africa Map Quiz | 0 | - | 5.00 | 1,754,782 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,314,048 |
| Biggest European Cities by Century | 0 | - | 4.97 | 104,868 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,580 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,822 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,444 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,065 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,191 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,575 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,422 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,789 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,808 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,033 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.91 | 59,016 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,285 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,520 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,788 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,049 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,327 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,770 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,660 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,204 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,900 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,869,291 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,272 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,395 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 117,860 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,040 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,466 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,421 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,754 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,608 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,047 |
| Countries with Megacities | 0 | - | 4.99 | 173,019 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,094 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,747 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,732 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 122,745 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,337 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,638,579 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,491 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,495 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,461 |
| Megacities on a World Map | 0 | - | 4.97 | 198,886 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 153,561 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,730 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 94,184 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 72,890 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,559 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,774 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,003 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 73,578 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,543 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,384 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.96 | 52,635 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,864 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,355 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 300,978 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,667 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,897 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,602 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,821 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 432,687 |
| Megacities on an Empty Map | 0 | - | 4.96 | 76,910 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,803 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,578 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,295 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,050 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,633 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 29,662 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,020 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,092 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,242 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,819 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,812 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,065 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,036 |
| Largest World Capitals with Exceptions | 0 | - | 4.65 | 37,356 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,917 |
| Most Populous Islands of Europe | 0 | - | 4.41 | 20,215 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,366 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,156 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,257 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,809 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,639 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,167 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,228 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,353 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 260,354 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,155 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,659 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 111,991 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,832 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,311 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,199 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,890 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,742 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,793 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,406 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,380 |
| Saint Lucia Country Quiz | 0 | - | 4.64 | 13,816 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,054 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,179 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,621 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 44,867 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,572 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,381 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,244 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 66,821 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,618 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.57 | 27,257 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 41,787 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,472,240 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 26,975 |
