| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 36,683,550 |
| US States Quiz | 0 | - | 5.00 | 13,208,159 |
| Biggest Cities in the United States | 0 | - | 4.91 | 748,461 |
| World Capitals Quiz | 0 | - | 5.00 | 4,155,197 |
| Biggest Cities in Texas | 0 | - | 4.24 | 105,918 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,219,013 |
| Biggest Urban Areas in the UK | 0 | - | 4.38 | 160,866 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 302,162 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.61 | 93,423 |
| Biggest English-Speaking Cities | 0 | - | 4.38 | 130,722 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.82 | 102,801 |
| Biggest Cities by Language | 0 | - | 4.95 | 202,000 |
| Biggest Mediterranean Cities | 0 | - | 4.60 | 71,670 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 318,805 |
| Most Populous Islands | 0 | - | 4.60 | 106,276 |
| Biggest Cities in Japan | 0 | - | 4.68 | 70,201 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 146,156 |
| Biggest Cities in Russia | 0 | - | 4.48 | 71,931 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 44,820 |
| Biggest Cities in Poland | 0 | - | 4.55 | 43,433 |
| Biggest Cities Starting With A | 0 | - | 4.49 | 104,493 |
| Biggest Cities Starting With B | 0 | - | 4.29 | 138,799 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 100,807 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 90,220 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 102,440 |
| Biggest Cities Starting With M | 0 | - | 4.52 | 119,652 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 106,643 |
| Biggest Cities Starting With S | 0 | - | 4.36 | 107,348 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 22,974 |
| Biggest U.S. Cities A-Z | 0 | - | 4.52 | 115,085 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 174,187 |
| Biggest Cities in France | 0 | - | 4.45 | 172,336 |
| Biggest Cities in Spain | 0 | - | 4.60 | 141,177 |
| Biggest Cities in Italy | 0 | - | 4.60 | 200,335 |
| Biggest Cities in California | 0 | - | 4.33 | 124,362 |
| Biggest Cities in the World Quiz | 0 | - | 4.80 | 605,582 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 21,472 |
| Biggest Cities in Africa Quiz | 0 | - | 4.89 | 87,374 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 45,545 |
| Biggest Cities in Europe | 0 | - | 4.50 | 423,664 |
| Biggest Cities in Canada | 0 | - | 4.60 | 113,443 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 33,731 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 136,024 |
| Biggest Cities in China | 0 | - | 4.42 | 125,834 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 131,806 |
| Biggest Cities in Germany | 0 | - | 4.94 | 240,830 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 140,922 |
| Biggest City in Every Country | 0 | - | 4.97 | 71,463 |
| Biggest Cities in North Carolina | 0 | - | 4.53 | 29,946 |
| Biggest Cities in Wisconsin | 0 | - | 4.42 | 21,850 |
| Biggest City by Time Zone | 0 | - | 4.76 | 51,273 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.45 | 94,687 |
| Biggest English Cities by Century | 0 | - | 4.92 | 91,630 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 40,747 |
| Biggest European Cities by Letter | 0 | - | 4.47 | 113,592 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 180,128 |
| Biggest Cities in India | 0 | - | 4.60 | 58,133 |
| Biggest Cities in Asia | 0 | - | 4.92 | 89,562 |
| Islands by Largest City #1 | 0 | - | 4.43 | 80,237 |
| Biggest City by Island | 0 | - | 4.49 | 43,954 |
| Most Populous Countries in 1900 | 0 | - | 4.88 | 153,167 |
| Biggest Cities in History | 0 | - | 4.46 | 74,428 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 41,342 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 61,685 |
| Five Biggest Cities by Country | 0 | - | 4.60 | 142,172 |
| Most Populous Countries in 1950 | 0 | - | 4.45 | 66,509 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 58,452 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 65,135 |
| Biggest Coastal City by Country | 0 | - | 4.55 | 25,887 |
| U.S. States with the Highest Population Density | 0 | - | 4.44 | 56,442 |
| U.S. States with the Lowest Population Density | 0 | - | 4.89 | 77,269 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.50 | 60,671 |
| Most Populous World Capitals | 0 | - | 4.89 | 132,577 |
| Biggest City by Region | 0 | - | 4.47 | 31,234 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 50,216 |
| Biggest City by Region #2 | 0 | - | 4.43 | 21,478 |
| United States Map Quiz | 0 | - | 4.95 | 3,712,431 |
| Europe Map Quiz | 0 | - | 4.99 | 3,956,189 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,617,460 |
| Biggest European Cities by Century | 0 | - | 4.96 | 111,213 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 85,429 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 75,496 |
| Capitals of Most Populated Countries | 0 | - | 4.96 | 111,364 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 117,226 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 232,950 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 58,005 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 61,046 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.95 | 60,356 |
| Islands by Largest City #2 | 0 | - | 4.53 | 25,285 |
| Biggest Cities by Latitude | 0 | - | 4.70 | 25,166 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.93 | 64,058 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 41,232 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.61 | 61,247 |
| Biggest Two-Word Cities | 0 | - | 4.62 | 36,522 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 62,543 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.71 | 59,051 |
| Cities of Ireland | 0 | - | 4.42 | 37,213 |
| Largest Cities in Alexander's Empire | 0 | - | 4.47 | 37,076 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 154,454 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.68 | 88,253 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 84,959 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,068,600 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.79 | 48,260 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 127,572 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 123,881 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 128,508 |
| Top 10 Least Populous U.S. States | 0 | - | 4.93 | 151,971 |
| Cities of China (With Some Help) | 0 | - | 4.84 | 25,737 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.89 | 39,953 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 45,222 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 229,342 |
| Countries with Megacities | 0 | - | 4.99 | 183,269 |
| Countries of Europe by Population | 0 | - | 4.98 | 115,175 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 178,569 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.95 | 134,482 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 143,482 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 41,475 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,817,933 |
| Biggest Cities in the UK | 0 | - | 4.42 | 84,896 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 86,517 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 61,379 |
| Megacities on a World Map | 0 | - | 4.98 | 207,700 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 183,922 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.76 | 50,855 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 100,662 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 77,838 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 40,842 |
| Most Populous Countries by Year | 0 | - | 4.74 | 84,321 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.96 | 84,963 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.43 | 62,130 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 89,729 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 58,607 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 75,283 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 87,417 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 337,917 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 137,665 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 52,257 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.45 | 36,231 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.45 | 37,787 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 472,797 |
| Megacities on an Empty Map | 0 | - | 4.96 | 81,344 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 55,826 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 57,756 |
| All Cities in China with Population of 1 Million | 0 | - | 4.54 | 33,560 |
| Northernmost Major City by Country | 0 | - | 4.51 | 29,246 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 24,370 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 36,137 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.94 | 58,864 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 102,066 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 46,621 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 79,309 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 91,351 |
| Most Populous Country by First Two Letters | 0 | - | 4.62 | 62,904 |
| Two Largest Cities by First Two Letters | 0 | - | 4.59 | 58,877 |
| U.S. States by Second Most Populous City | 0 | - | 4.41 | 37,881 |
| Largest World Capitals with Exceptions | 0 | - | 4.70 | 48,519 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.70 | 64,851 |
| Most Populous Islands of Europe | 0 | - | 4.44 | 22,098 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 71,829 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.70 | 64,478 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.90 | 63,272 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.90 | 50,620 |
| First Countries to Reach 5 Million People | 0 | - | 4.89 | 103,191 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.47 | 56,258 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.61 | 53,300 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 39,562 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 278,701 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 86,549 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 64,976 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 32,041 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 134,810 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 89,825 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 43,897 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 69,829 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 41,650 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.90 | 47,463 |
| Flags to Largest Cities | 0 | - | 4.60 | 26,251 |
| 500 Biggest US Cities | 0 | - | 4.85 | 84,373 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 27,428 |
| Saint Lucia Country Quiz | 0 | - | 4.62 | 14,907 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 67,146 |
| Demographics Multiple Choice | 0 | - | 4.68 | 37,705 |
| Biggest Cities in France - Extreme | 0 | - | 4.85 | 36,344 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.71 | 51,543 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.85 | 62,627 |
| Densest Countries Bordering Each Other | 0 | - | 4.92 | 60,357 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 87,512 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 71,431 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.56 | 22,945 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.56 | 31,199 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.85 | 54,665 |
| World Map Without 20 Random Countries | 0 | - | 4.98 | 6,155,241 |
| Biggest Cities in Australia on a Map | 0 | - | 4.60 | 29,547 |
| Largest Nordic Cities on a Map | 0 | - | 4.52 | 17,118 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 18,847 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.83 | 47,445 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.53 | 33,578 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.92 | 37,448 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.96 | 48,713 |
| Countries by Population Range - Tile Select | 0 | - | 4.83 | 46,256 |
