| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 36,646,340 |
| US States Quiz | 0 | - | 5.00 | 13,193,498 |
| Biggest Cities in the United States | 0 | - | 4.91 | 747,687 |
| World Capitals Quiz | 0 | - | 5.00 | 4,151,670 |
| Biggest Cities in Texas | 0 | - | 4.24 | 105,861 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,218,243 |
| Biggest Urban Areas in the UK | 0 | - | 4.38 | 160,792 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 301,935 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.61 | 93,374 |
| Biggest English-Speaking Cities | 0 | - | 4.38 | 130,693 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.82 | 102,745 |
| Biggest Cities by Language | 0 | - | 4.95 | 201,875 |
| Biggest Mediterranean Cities | 0 | - | 4.60 | 71,635 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 318,613 |
| Most Populous Islands | 0 | - | 4.60 | 106,223 |
| Biggest Cities in Japan | 0 | - | 4.68 | 70,149 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 146,065 |
| Biggest Cities in Russia | 0 | - | 4.48 | 71,877 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 44,783 |
| Biggest Cities in Poland | 0 | - | 4.55 | 43,393 |
| Biggest Cities Starting With A | 0 | - | 4.49 | 104,435 |
| Biggest Cities Starting With B | 0 | - | 4.29 | 138,740 |
| Biggest Cities Starting With D | 0 | - | 4.48 | 100,744 |
| Biggest Cities Starting With H | 0 | - | 4.53 | 90,174 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 102,382 |
| Biggest Cities Starting With M | 0 | - | 4.52 | 119,593 |
| Biggest Cities Starting With P | 0 | - | 4.48 | 106,586 |
| Biggest Cities Starting With S | 0 | - | 4.36 | 107,259 |
| Biggest Cities in Mexico | 0 | - | 4.54 | 22,951 |
| Biggest U.S. Cities A-Z | 0 | - | 4.52 | 114,991 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 174,097 |
| Biggest Cities in France | 0 | - | 4.45 | 172,172 |
| Biggest Cities in Spain | 0 | - | 4.60 | 141,029 |
| Biggest Cities in Italy | 0 | - | 4.60 | 200,184 |
| Biggest Cities in California | 0 | - | 4.33 | 124,293 |
| Biggest Cities in the World Quiz | 0 | - | 4.80 | 605,059 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 21,458 |
| Biggest Cities in Africa Quiz | 0 | - | 4.89 | 87,313 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 45,500 |
| Biggest Cities in Europe | 0 | - | 4.50 | 423,383 |
| Biggest Cities in Canada | 0 | - | 4.60 | 113,370 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 33,678 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 135,945 |
| Biggest Cities in China | 0 | - | 4.42 | 125,703 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 131,722 |
| Biggest Cities in Germany | 0 | - | 4.94 | 240,625 |
| Biggest City in Each U.S. State | 0 | - | 4.83 | 140,804 |
| Biggest City in Every Country | 0 | - | 4.97 | 71,401 |
| Biggest Cities in North Carolina | 0 | - | 4.53 | 29,916 |
| Biggest Cities in Wisconsin | 0 | - | 4.42 | 21,840 |
| Biggest City by Time Zone | 0 | - | 4.76 | 51,248 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.45 | 94,642 |
| Biggest English Cities by Century | 0 | - | 4.92 | 91,528 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 40,727 |
| Biggest European Cities by Letter | 0 | - | 4.47 | 113,543 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 179,809 |
| Biggest Cities in India | 0 | - | 4.60 | 58,067 |
| Biggest Cities in Asia | 0 | - | 4.92 | 89,510 |
| Islands by Largest City #1 | 0 | - | 4.43 | 80,213 |
| Biggest City by Island | 0 | - | 4.49 | 43,928 |
| Most Populous Countries in 1900 | 0 | - | 4.88 | 153,026 |
| Biggest Cities in History | 0 | - | 4.46 | 74,401 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 41,320 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 61,641 |
| Five Biggest Cities by Country | 0 | - | 4.60 | 142,080 |
| Most Populous Countries in 1950 | 0 | - | 4.45 | 66,454 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.44 | 58,423 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 65,101 |
| Biggest Coastal City by Country | 0 | - | 4.55 | 25,863 |
| U.S. States with the Highest Population Density | 0 | - | 4.44 | 56,425 |
| U.S. States with the Lowest Population Density | 0 | - | 4.89 | 77,216 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.50 | 60,641 |
| Most Populous World Capitals | 0 | - | 4.89 | 132,519 |
| Biggest City by Region | 0 | - | 4.47 | 31,200 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 50,176 |
| Biggest City by Region #2 | 0 | - | 4.44 | 21,453 |
| United States Map Quiz | 0 | - | 4.95 | 3,710,048 |
| Europe Map Quiz | 0 | - | 4.99 | 3,951,843 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,613,187 |
| Biggest European Cities by Century | 0 | - | 4.95 | 111,132 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 85,356 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 75,353 |
| Capitals of Most Populated Countries | 0 | - | 4.96 | 111,317 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 117,149 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 232,833 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 57,947 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 60,996 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.95 | 60,314 |
| Islands by Largest City #2 | 0 | - | 4.53 | 25,263 |
| Biggest Cities by Latitude | 0 | - | 4.70 | 25,151 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.93 | 63,995 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 41,208 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.60 | 61,210 |
| Biggest Two-Word Cities | 0 | - | 4.62 | 36,482 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 62,472 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.71 | 59,006 |
| Cities of Ireland | 0 | - | 4.42 | 37,192 |
| Largest Cities in Alexander's Empire | 0 | - | 4.47 | 37,050 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 154,339 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.68 | 88,202 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 84,894 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,065,893 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.79 | 48,230 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 127,496 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 123,808 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 128,405 |
| Top 10 Least Populous U.S. States | 0 | - | 4.93 | 151,900 |
| Cities of China (With Some Help) | 0 | - | 4.84 | 25,699 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.89 | 39,909 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 45,179 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 229,151 |
| Countries with Megacities | 0 | - | 4.99 | 183,134 |
| Countries of Europe by Population | 0 | - | 4.98 | 115,084 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 178,393 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.95 | 134,274 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 143,349 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.82 | 41,442 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,815,353 |
| Biggest Cities in the UK | 0 | - | 4.42 | 84,823 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 86,449 |
| Biggest World Cities in 1850 | 0 | - | 4.63 | 61,345 |
| Megacities on a World Map | 0 | - | 4.98 | 207,542 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 183,764 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.76 | 50,827 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 100,594 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 77,777 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.79 | 40,814 |
| Most Populous Countries by Year | 0 | - | 4.74 | 84,210 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.96 | 84,889 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.43 | 62,109 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 89,669 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 58,524 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 75,231 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 87,369 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 337,495 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 137,559 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 52,216 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.45 | 36,211 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.45 | 37,758 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 472,380 |
| Megacities on an Empty Map | 0 | - | 4.96 | 81,261 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 55,780 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 57,703 |
| All Cities in China with Population of 1 Million | 0 | - | 4.54 | 33,496 |
| Northernmost Major City by Country | 0 | - | 4.51 | 29,234 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 24,333 |
| All Cities in India with Population of 1 Million | 0 | - | 4.82 | 36,066 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 58,797 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 101,989 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 46,549 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 79,214 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 91,285 |
| Most Populous Country by First Two Letters | 0 | - | 4.62 | 62,861 |
| Two Largest Cities by First Two Letters | 0 | - | 4.59 | 58,845 |
| U.S. States by Second Most Populous City | 0 | - | 4.41 | 37,863 |
| Largest World Capitals with Exceptions | 0 | - | 4.70 | 48,483 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.70 | 64,816 |
| Most Populous Islands of Europe | 0 | - | 4.44 | 22,061 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 71,714 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.75 | 62,501 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.90 | 63,166 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.90 | 50,520 |
| First Countries to Reach 5 Million People | 0 | - | 4.89 | 103,102 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.47 | 56,221 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.61 | 53,266 |
| Biggest Cities in Deserts | 0 | - | 4.93 | 39,525 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 278,391 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.89 | 86,429 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 64,928 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 32,002 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 134,665 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 89,766 |
| Ten Southernmost Megacities | 0 | - | 4.80 | 43,866 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 69,782 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 41,629 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.90 | 47,416 |
| Flags to Largest Cities | 0 | - | 4.60 | 26,212 |
| 500 Biggest US Cities | 0 | - | 4.85 | 84,246 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 27,409 |
| Saint Lucia Country Quiz | 0 | - | 4.62 | 14,892 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 66,770 |
| Demographics Multiple Choice | 0 | - | 4.63 | 37,682 |
| Biggest Cities in France - Extreme | 0 | - | 4.85 | 36,269 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.71 | 51,451 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.84 | 62,497 |
| Densest Countries Bordering Each Other | 0 | - | 4.92 | 60,315 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 87,457 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 71,239 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.56 | 22,927 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.56 | 31,135 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.85 | 54,590 |
| World Map Without 20 Random Countries | 0 | - | 4.98 | 6,145,663 |
| Biggest Cities in Australia on a Map | 0 | - | 4.60 | 29,506 |
| Largest Nordic Cities on a Map | 0 | - | 4.52 | 17,092 |
| 100 Biggest Cities in New Zealand with a Map | 0 | - | 4.47 | 18,751 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.83 | 47,392 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.53 | 33,535 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.92 | 37,406 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.96 | 48,644 |
| Countries by Population Range - Tile Select | 0 | - | 4.82 | 46,212 |
