| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,203,568 |
| US States Quiz | 0 | - | 5.00 | 12,276,425 |
| Biggest Cities in the United States | 0 | - | 4.92 | 708,496 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,339,409 |
| World Capitals Quiz | 0 | - | 5.00 | 3,922,419 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,144,701 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,167,769 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,795 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,019 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 89,914 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,812 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,152 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,170 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,334 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,770 |
| Most Populous Islands | 0 | - | 4.64 | 102,770 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,609 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,930 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,817 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,474,215 |
| Countries that Start with A | 0 | - | 4.96 | 1,630,832 |
| Countries that Start with B | 0 | - | 4.94 | 1,768,400 |
| Countries that Start with C | 0 | - | 4.95 | 1,401,226 |
| Countries that Start with S | 0 | - | 4.96 | 1,357,551 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,719 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,198 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,036 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,972 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,762 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,522 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,018 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,782 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,599 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,036 |
| Biggest U.S. Cities A-Z | 0 | - | 4.54 | 109,161 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,026 |
| Biggest Cities in France | 0 | - | 4.52 | 161,650 |
| Biggest Cities in Spain | 0 | - | 4.65 | 132,949 |
| Biggest Cities in Italy | 0 | - | 4.63 | 189,148 |
| Biggest Cities in California | 0 | - | 4.30 | 119,927 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 571,735 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,890 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,160 |
| Countries of Africa | 0 | - | 5.00 | 1,736,641 |
| Biggest Cities in The Netherlands | 0 | - | 4.40 | 35,694 |
| Biggest Cities in Europe | 0 | - | 4.63 | 403,881 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,832 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,611 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,396 |
| Biggest Cities in China | 0 | - | 4.43 | 118,302 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,665 |
| Biggest Cities in Germany | 0 | - | 4.94 | 226,695 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 134,952 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,844 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,809 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,797 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,212 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,764 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,301 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,734 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,454 |
| Biggest Cities in India | 0 | - | 4.52 | 54,894 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,985 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,351 |
| Biggest City by Island | 0 | - | 4.49 | 42,240 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,116 |
| Biggest Cities in History | 0 | - | 4.47 | 70,633 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,867 |
| Random Capital to Country | 0 | - | 4.99 | 2,075,228 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,384 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,477 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,411 |
| All Country Flags of the World | 0 | - | 5.00 | 2,276,529 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,243 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,216 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,097 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,971 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,594 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.57 | 58,439 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,203 |
| Biggest City by Region | 0 | - | 4.50 | 29,172 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,267 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,861 |
| United States Map Quiz | 0 | - | 4.96 | 3,582,238 |
| Europe Map Quiz | 0 | - | 4.99 | 3,724,940 |
| Africa Map Quiz | 0 | - | 5.00 | 1,759,350 |
| South America Map Quiz | 0 | - | 4.99 | 1,258,003 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,330,854 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,174 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,804 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,006 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,676 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,356 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,733 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,788 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,653 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,998 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,905 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,101 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,239 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,400 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,675 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,966 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,302 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,536 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,862 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,210 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,378 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,156 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,881,556 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,374 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,687 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,296 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,343 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,779 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,569 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.90 | 33,971 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,762 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,668 |
| Countries with Megacities | 0 | - | 4.99 | 176,029 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,457 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,325 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,125 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,434 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,454 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,649,075 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,803 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 81,780 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,583 |
| Megacities on a World Map | 0 | - | 4.97 | 199,716 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,377 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,850 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,461 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,663 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,699 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,104 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,078 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 74,602 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,649 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,648 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 52,987 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,093 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,666 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 312,433 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,987 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,046 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,709 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,938 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 434,472 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,189 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,028 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 53,938 |
| All Cities in China with Population of 1 Million | 0 | - | 4.66 | 27,621 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,120 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,033 |
| All Cities in India with Population of 1 Million | 0 | - | 4.80 | 32,799 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,288 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,422 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,442 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,019 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,091 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,233 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,216 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,745 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 62,078 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,339 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,551 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,331 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,412 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,959 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,105 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,294 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,364 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,502 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 261,602 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,642 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,850 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.96 | 112,338 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,111 |
| Ten Southernmost Megacities | 0 | - | 4.68 | 32,414 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,425 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,000 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,934 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,043 |
| 500 Biggest US Cities | 0 | - | 4.88 | 75,974 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,454 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,881 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,331 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,277 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,910 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,264 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 51,125 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,536 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,462 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,033 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,696 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.58 | 27,495 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,018 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,512,970 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,118 |
