| Quiz | Points | Best | Rating | Takes |
|---|
| Biggest Cities in the United States | 0 | - | 4.93 | 706,540 |
| Places in their Native Language #1 | 0 | - | 4.77 | 187,775 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,165,317 |
| Biggest Urban Areas in the UK | 0 | - | 4.34 | 156,631 |
| English Speaking Countries | 0 | - | 4.71 | 313,413 |
| Spanish-Speaking Countries Quiz | 0 | - | 4.91 | 294,943 |
| Countries and Languages Quiz | 0 | - | 4.86 | 215,266 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 287,433 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.54 | 89,717 |
| Biggest English-Speaking Cities | 0 | - | 4.39 | 127,670 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.84 | 98,994 |
| Biggest Cities by Language | 0 | - | 4.95 | 193,604 |
| Biggest Mediterranean Cities | 0 | - | 4.73 | 69,221 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 306,185 |
| Most Populous Islands | 0 | - | 4.63 | 102,631 |
| Biggest Cities in Japan | 0 | - | 4.73 | 66,467 |
| Biggest US Cities by Decade | 0 | - | 4.92 | 132,678 |
| Biggest Cities in Russia | 0 | - | 4.48 | 68,679 |
| Countries by Official Language | 0 | - | 4.93 | 141,940 |
| French-Speaking Countries Quiz | 0 | - | 4.78 | 193,288 |
| Places in their Native Language #2 | 0 | - | 4.82 | 103,110 |
| Biggest Cities in Brazil | 0 | - | 4.54 | 41,552 |
| Biggest Cities in Poland | 0 | - | 4.73 | 40,060 |
| Biggest Cities Starting With A | 0 | - | 4.54 | 86,833 |
| Biggest Cities Starting With B | 0 | - | 4.38 | 120,779 |
| Biggest Cities Starting With D | 0 | - | 4.46 | 84,612 |
| Biggest Cities Starting With H | 0 | - | 4.48 | 75,321 |
| Biggest Cities Starting With L | 0 | - | 4.42 | 84,839 |
| Biggest Cities Starting With M | 0 | - | 4.47 | 98,529 |
| Biggest Cities Starting With P | 0 | - | 4.44 | 87,391 |
| Biggest Cities in Mexico | 0 | - | 4.51 | 20,959 |
| Biggest U.S. Cities A-Z | 0 | - | 4.52 | 108,979 |
| Biggest World Cities A-Z | 0 | - | 4.38 | 166,691 |
| Top World Languages | 0 | - | 4.89 | 576,380 |
| Biggest Cities in France | 0 | - | 4.52 | 161,202 |
| Biggest Cities in Spain | 0 | - | 4.64 | 132,593 |
| Biggest Cities in Italy | 0 | - | 4.57 | 188,682 |
| Biggest Cities in California | 0 | - | 4.30 | 119,737 |
| Biggest Cities in the World Quiz | 0 | - | 4.84 | 570,260 |
| Biggest Cities in New Zealand | 0 | - | 4.56 | 19,827 |
| Biggest Cities in Africa Quiz | 0 | - | 4.88 | 83,985 |
| Biggest Cities in The Netherlands | 0 | - | 4.42 | 33,648 |
| Biggest Cities in Europe | 0 | - | 4.56 | 403,070 |
| Biggest Cities in Canada | 0 | - | 4.56 | 108,633 |
| Biggest Cities in Sweden | 0 | - | 4.71 | 24,522 |
| Countries with the Highest Population Density | 0 | - | 4.88 | 131,208 |
| Countries in their Native Language | 0 | - | 4.97 | 149,491 |
| Biggest Cities in China | 0 | - | 4.42 | 117,971 |
| Countries with the Lowest Population Density | 0 | - | 4.97 | 126,429 |
| Biggest Cities in Germany | 0 | - | 4.94 | 225,967 |
| Capitals in their Native Languages | 0 | - | 4.93 | 106,335 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 134,352 |
| Biggest City in Every Country | 0 | - | 4.97 | 66,712 |
| Biggest Cities in North Carolina | 0 | - | 4.48 | 25,731 |
| Biggest Cities in Wisconsin | 0 | - | 4.41 | 20,557 |
| Biggest City by Time Zone | 0 | - | 4.74 | 49,727 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.42 | 78,122 |
| Biggest English Cities by Century | 0 | - | 4.92 | 85,479 |
| Biggest Cities in Switzerland | 0 | - | 4.55 | 38,168 |
| Biggest European Cities by Letter | 0 | - | 4.43 | 109,611 |
| Most Populous Countries in 2050 | 0 | - | 4.92 | 173,141 |
| Biggest Cities in India | 0 | - | 4.51 | 54,765 |
| Biggest Cities in Asia | 0 | - | 4.87 | 85,818 |
| Islands by Largest City #1 | 0 | - | 4.45 | 78,267 |
| Biggest City by Island | 0 | - | 4.49 | 42,166 |
| German-Speaking Countries | 0 | - | 4.92 | 105,620 |
| Most Populous Countries in 1900 | 0 | - | 4.86 | 146,841 |
| Biggest Cities in History | 0 | - | 4.49 | 70,381 |
| Biggest Cities by Trait #1 | 0 | - | 4.44 | 39,788 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.95 | 58,248 |
| Five Biggest Cities by Country | 0 | - | 4.76 | 122,228 |
| Most Populous Countries in 1950 | 0 | - | 4.64 | 63,256 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.42 | 56,160 |
| Top 10 World Cities Through History | 0 | - | 4.41 | 63,131 |
| Biggest Coastal City by Country | 0 | - | 4.56 | 24,010 |
| U.S. States with the Highest Population Density | 0 | - | 4.46 | 54,890 |
| U.S. States with the Lowest Population Density | 0 | - | 4.90 | 74,462 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.49 | 51,814 |
| Countries With the Most English Speakers | 0 | - | 4.88 | 78,295 |
| Most Populous World Capitals | 0 | - | 4.89 | 127,757 |
| Biggest City by Region | 0 | - | 4.50 | 29,040 |
| Most Populous 2nd Cities | 0 | - | 4.52 | 39,125 |
| Biggest City by Region #2 | 0 | - | 4.46 | 19,754 |
| Biggest European Cities by Century | 0 | - | 4.96 | 104,939 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 81,639 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.93 | 71,862 |
| Capitals of Most Populated Countries | 0 | - | 4.97 | 107,508 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 113,142 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 224,347 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 54,648 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.91 | 57,486 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 56,849 |
| Islands by Largest City #2 | 0 | - | 4.56 | 23,829 |
| Biggest Cities by Latitude | 0 | - | 4.73 | 24,048 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.92 | 59,084 |
| Largest World Cities With Four Letters | 0 | - | 4.41 | 39,319 |
| Biggest Cities once in the Roman Empire | 0 | - | 4.64 | 58,553 |
| Biggest Two-Word Cities | 0 | - | 4.71 | 33,834 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 58,114 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.73 | 55,380 |
| Largest Cities in Alexander's Empire | 0 | - | 4.46 | 29,792 |
| Five Most Populated Cities by Continent | 0 | - | 4.95 | 145,815 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.56 | 68,260 |
| Biggest Cities in the World - Extreme | 0 | - | 4.97 | 72,979 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.78 | 46,290 |
| Countries With More Than 100 Million People | 0 | - | 4.97 | 100,472 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.92 | 117,980 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 123,134 |
| Top 10 Least Populous U.S. States | 0 | - | 4.95 | 146,551 |
| Cities of China (With Some Help) | 0 | - | 4.77 | 23,469 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 33,802 |
| Biggest Cities with Exceptions | 0 | - | 4.87 | 42,637 |
| Top 50 Countries by Population - In Order | 0 | - | 4.96 | 217,213 |
| Countries with Megacities | 0 | - | 4.99 | 174,926 |
| Countries of Europe by Population | 0 | - | 4.98 | 108,200 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 167,893 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 126,829 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 122,919 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.89 | 32,364 |
| Biggest Cities in the UK | 0 | - | 4.42 | 79,587 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 81,579 |
| Biggest World Cities in 1850 | 0 | - | 4.52 | 47,485 |
| Megacities on a World Map | 0 | - | 4.97 | 199,078 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.97 | 168,988 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.78 | 48,765 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.97 | 94,990 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.85 | 73,361 |
| Biggest Cities once in the Ottoman Empire | 0 | - | 4.81 | 38,593 |
| Most Populous Countries by Year | 0 | - | 4.77 | 78,854 |
| Ten Northernmost Megacities | 0 | - | 4.41 | 44,021 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.93 | 74,310 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.42 | 60,574 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 85,450 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.96 | 52,729 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.98 | 71,917 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 83,442 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 303,064 |
| Countries With More than 50 Million People | 0 | - | 4.98 | 124,761 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.44 | 49,940 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.54 | 34,622 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.44 | 35,849 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 433,129 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 61,616 |
| Megacities on an Empty Map | 0 | - | 4.96 | 76,986 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.97 | 87,173 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.97 | 51,877 |
| Top World Languages on a Map | 0 | - | 4.92 | 80,151 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.95 | 159,574 |
| All 3M Cities on the World Map | 0 | - | 4.93 | 53,674 |
| All Cities in China with Population of 1 Million | 0 | - | 4.65 | 27,386 |
| Northernmost Major City by Country | 0 | - | 4.50 | 28,070 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 20,748 |
| All Cities in India with Population of 1 Million | 0 | - | 4.79 | 32,038 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.93 | 55,088 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.93 | 78,184 |
| Top 10 Most Populous U.S. State Capitals | 0 | - | 4.47 | 42,305 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.91 | 75,866 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 86,885 |
| Most Populous Country by First Two Letters | 0 | - | 4.64 | 60,111 |
| Two Largest Cities by First Two Letters | 0 | - | 4.65 | 56,091 |
| Top 10 European Countries by English Proficiency | 0 | - | 4.73 | 52,732 |
| Largest World Capitals with Exceptions | 0 | - | 4.66 | 37,469 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.71 | 61,964 |
| Most Populous Islands of Europe | 0 | - | 4.42 | 20,249 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.96 | 57,425 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.84 | 54,207 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.88 | 60,299 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 47,846 |
| First Countries to Reach 5 Million People | 0 | - | 4.91 | 98,803 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.45 | 54,192 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.52 | 43,264 |
| Biggest Cities in Deserts | 0 | - | 4.86 | 37,374 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 260,732 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.93 | 79,331 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.98 | 77,425 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 61,718 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 112,086 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 85,908 |
| Ten Southernmost Megacities | 0 | - | 4.67 | 32,338 |
| Countries with the Most People Bordering Them | 0 | - | 4.96 | 66,261 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.47 | 97,683 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.47 | 39,921 |
| Flags to Languages | 0 | - | 4.97 | 119,590 |
| Top European Languages on a Map | 0 | - | 4.77 | 102,486 |
| Top Asian Languages on a Map | 0 | - | 4.88 | 51,791 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.92 | 44,803 |
| Flags to Largest Cities | 0 | - | 4.55 | 22,861 |
| 500 Biggest US Cities | 0 | - | 4.90 | 75,558 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.46 | 26,413 |
| Top African Languages on a Map | 0 | - | 4.89 | 29,338 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 54,118 |
| Countries With the Most Russian Speakers | 0 | - | 4.94 | 44,516 |
| Countries With the Most German Speakers | 0 | - | 4.84 | 41,403 |
| Countries With the Most Italian Speakers | 0 | - | 4.47 | 44,256 |
| Demographics Multiple Choice | 0 | - | 4.54 | 36,207 |
| Biggest Cities in France - Extreme | 0 | - | 4.84 | 31,713 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.82 | 44,997 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.89 | 50,744 |
| Densest Countries Bordering Each Other | 0 | - | 4.88 | 57,412 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 83,308 |
