| Quiz | Points | Best | Rating | Takes |
|---|
| Countries of the World Quiz | 0 | - | 5.00 | 34,302,807 |
| US States Quiz | 0 | - | 5.00 | 12,316,235 |
| Biggest Cities in the United States | 0 | - | 4.93 | 710,057 |
| U.S. State Capitals Quiz | 0 | - | 4.99 | 1,342,541 |
| World Capitals Quiz | 0 | - | 5.00 | 3,930,859 |
| Country Flags Quiz #1 | 0 | - | 4.95 | 2,148,163 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,169,700 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,911 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 288,525 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.55 | 90,079 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,896 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 99,277 |
| Biggest Cities by Language | 0 | - | 4.95 | 194,439 |
| Biggest Mediterranean Cities | 0 | - | 4.67 | 69,423 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 307,161 |
| Most Populous Islands | 0 | - | 4.64 | 102,875 |
| Biggest Cities in Japan | 0 | - | 4.68 | 66,764 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 133,112 |
| Biggest Cities in Russia | 0 | - | 4.49 | 68,915 |
| Countries of Europe Quiz | 0 | - | 5.00 | 2,484,893 |
| Countries that Start with A | 0 | - | 4.96 | 1,634,729 |
| Countries that Start with B | 0 | - | 4.94 | 1,772,278 |
| Countries that Start with C | 0 | - | 4.95 | 1,404,270 |
| Countries that Start with S | 0 | - | 4.96 | 1,360,781 |
| Biggest Cities in Brazil | 0 | - | 4.55 | 41,836 |
| Biggest Cities in Poland | 0 | - | 4.72 | 40,325 |
| Biggest Cities Starting With A | 0 | - | 4.55 | 87,213 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 121,168 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,902 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,869 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 85,203 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 98,994 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,765 |
| Biggest Cities in Mexico | 0 | - | 4.52 | 21,103 |
| Biggest U.S. Cities A-Z | 0 | - | 4.55 | 109,364 |
| Biggest World Cities A-Z | 0 | - | 4.39 | 167,303 |
| Biggest Cities in France | 0 | - | 4.53 | 162,023 |
| Biggest Cities in Spain | 0 | - | 4.66 | 133,268 |
| Biggest Cities in Italy | 0 | - | 4.64 | 189,591 |
| Biggest Cities in California | 0 | - | 4.30 | 120,067 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 573,088 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,933 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 84,270 |
| Countries of Africa | 0 | - | 5.00 | 1,742,671 |
| Biggest Cities in The Netherlands | 0 | - | 4.43 | 36,643 |
| Biggest Cities in Europe | 0 | - | 4.64 | 404,594 |
| Biggest Cities in Canada | 0 | - | 4.57 | 108,991 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,705 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,578 |
| Biggest Cities in China | 0 | - | 4.45 | 118,604 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 127,041 |
| Biggest Cities in Germany | 0 | - | 4.94 | 227,236 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 135,156 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,981 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,861 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,849 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,272 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,961 |
| Biggest Cities in Switzerland | 0 | - | 4.56 | 38,398 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 110,118 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,685 |
| Biggest Cities in India | 0 | - | 4.52 | 55,003 |
| Biggest Cities in Asia | 0 | - | 4.87 | 86,123 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,423 |
| Biggest City by Island | 0 | - | 4.49 | 42,309 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 147,317 |
| Biggest Cities in History | 0 | - | 4.47 | 70,796 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,929 |
| Random Capital to Country | 0 | - | 4.99 | 2,079,552 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,492 |
| Five Biggest Cities by Country | 0 | - | 4.77 | 122,705 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,511 |
| All Country Flags of the World | 0 | - | 5.00 | 2,286,720 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,327 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,299 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,169 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 55,049 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,925 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.53 | 58,867 |
| Most Populous World Capitals | 0 | - | 4.89 | 128,356 |
| Biggest City by Region | 0 | - | 4.50 | 29,245 |
| Most Populous 2nd Cities | 0 | - | 4.53 | 39,358 |
| Biggest City by Region #2 | 0 | - | 4.44 | 19,935 |
| United States Map Quiz | 0 | - | 4.96 | 3,586,739 |
| Europe Map Quiz | 0 | - | 4.99 | 3,733,361 |
| Africa Map Quiz | 0 | - | 5.00 | 1,762,193 |
| South America Map Quiz | 0 | - | 4.99 | 1,260,214 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.94 | 4,340,923 |
| Biggest European Cities by Century | 0 | - | 4.96 | 105,374 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,931 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 72,156 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,829 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,509 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 225,071 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,895 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,779 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 57,112 |
| Islands by Largest City #2 | 0 | - | 4.54 | 23,945 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,144 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,383 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,468 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,770 |
| Biggest Two-Word Cities | 0 | - | 4.73 | 34,071 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,430 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.74 | 55,666 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,907 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 146,540 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.57 | 68,490 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 73,301 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 2,888,398 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,437 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,878 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.93 | 118,471 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,553 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,984 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,664 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.91 | 34,073 |
| Biggest Cities with Exceptions | 0 | - | 4.88 | 42,853 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 218,071 |
| Countries with Megacities | 0 | - | 4.99 | 176,407 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,692 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 168,714 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 127,601 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 123,718 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,514 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 2,655,768 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,993 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,941 |
| Biggest World Cities in 1850 | 0 | - | 4.53 | 47,673 |
| Megacities on a World Map | 0 | - | 4.97 | 200,127 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 174,989 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,922 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 95,660 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,807 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.78 | 38,779 |
| Most Populous Countries by Year | 0 | - | 4.78 | 79,460 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,159 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 74,733 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,706 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,799 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.97 | 53,172 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 72,228 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,830 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 313,558 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 125,164 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 50,160 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.57 | 34,771 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,999 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 435,472 |
| Megacities on an Empty Map | 0 | - | 4.96 | 77,350 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 52,166 |
| All 3M Cities on the World Map | 0 | - | 4.94 | 54,131 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 29,915 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,166 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.93 | 21,248 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,948 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,443 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.94 | 78,628 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.46 | 42,571 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 76,160 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 87,247 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,346 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,317 |
| Largest World Capitals with Exceptions | 0 | - | 4.67 | 37,911 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.72 | 62,174 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,392 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,648 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,430 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,506 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 48,057 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 99,283 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,360 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.53 | 43,448 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,573 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 262,183 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.92 | 79,874 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,943 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,528 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 86,271 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 41,601 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,574 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 40,220 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 45,051 |
| Flags to Largest Cities | 0 | - | 4.55 | 23,164 |
| 500 Biggest US Cities | 0 | - | 4.88 | 76,321 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,485 |
| Saint Lucia Country Quiz | 0 | - | 4.57 | 13,916 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,512 |
| Demographics Multiple Choice | 0 | - | 4.55 | 36,332 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 32,050 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 45,501 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.90 | 51,413 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,638 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,811 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 67,173 |
| Biggest Cities and Towns in England - 1377 AD | 0 | - | 4.58 | 21,738 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.63 | 27,604 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.82 | 42,167 |
| World Map Without 20 Random Countries | 0 | - | 4.97 | 5,537,945 |
| Biggest Cities in Australia on a Map | 0 | - | 4.58 | 27,208 |
