| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,773 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,841 |
| Biggest Cities in the World | 0 | - | 4.91 | 806,896 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,568 |
| Biggest City by Time Zone | 0 | - | 4.88 | 69,080 |
| Biggest City in Every Country | 0 | - | 4.98 | 102,175 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 32,948 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,802 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,643 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 150,553 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,942 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,373 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 81,090 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,711 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,832 |
| Ten Southernmost Megacities | 0 | - | 4.84 | 65,296 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,552 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,729 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,118 |
| Biggest Cities in the United States | 0 | - | 4.94 | 988,997 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,483 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,156 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,182 |
| Largest City by Island | 0 | - | 4.87 | 72,560 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,484 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,851 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,238 |
| Megacities on a World Map | 0 | - | 4.98 | 257,419 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 582,776 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,832 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,827 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,755 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,839 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,549 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 166,018 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,116 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,343 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,479 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 349,315 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,350 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,596 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,478 |
| Countries with Megacities | 0 | - | 4.99 | 267,803 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,127 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,330 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,457 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,426 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,933 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,948 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,363 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 74,028 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,067 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,912 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.90 | 116,703 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,193 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,676 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,179 |
| Biggest City by Region | 0 | - | 4.50 | 36,416 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,369 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,327 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,460 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,605 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,599 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,460 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,505 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,807 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,992 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,355 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,714 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,210 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 48,169 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,523 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,952 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,602 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,431 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 63,037 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,978 |
| Biggest Cities in Europe | 0 | - | 4.70 | 549,731 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,058 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,413 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,198 |
| Biggest Cities in History | 0 | - | 4.52 | 90,686 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 79,191 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,152 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,934 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,599 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 127,783 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,640 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,961 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,574 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,731 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,726 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,619 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,826 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 125,230 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,236 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 110,056 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,667 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 144,201 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,842 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,588 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,600 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,969 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,555 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,843 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,886 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,033 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,252 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,019 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,007 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,603 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,277 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,571 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,921 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,863 |
| Capital Cities with Spanish Names | 0 | - | 4.90 | 78,245 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 221,204 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,796 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,118 |
| Flags to Languages | 0 | - | 4.95 | 174,683 |
| Top Asian Languages on a Map | 0 | - | 4.95 | 72,202 |
| Top African Languages on a Map | 0 | - | 4.94 | 75,452 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,306 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,837 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,530 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 68,594 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,665 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,703 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,508 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,338 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 48,084 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 42,419 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.98 | 119,642 |
| Boundary Waters | 0 | - | 4.92 | 88,832 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,465 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,825 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,541 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,059 |
| Most Populous Islands | 0 | - | 4.80 | 123,431 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,402 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,674 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,896 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,426 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 195,265 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 105,080 |
| Countries by Population Decrease | 0 | - | 4.46 | 50,017 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,966 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,100 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,542 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,695 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,890 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,120 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 65,106 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.31 | 41,002 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,916 |
| Biggest Cities Starting With C | 0 | - | 4.12 | 105,866 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,565 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,450 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,917 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,357 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.67 | 23,886 |
| Highest Fertility Countries | 0 | - | 4.90 | 27,303 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 108,206 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 65,025 |
| Biggest English Cities by Century | 0 | - | 4.91 | 107,089 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,467 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,912 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 224,353 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,963,692 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,224 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,861 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 127,539 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,614 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 64,627 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,217 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,105 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 92,502 |
| U.S. States by Second Most Populous City | 0 | - | 4.43 | 44,197 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 37,032 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,142 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,559 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,449 |
| Cities in European Economic Areas on a Map | 0 | - | 4.73 | 18,226 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,240 |
| Landlocked Countries | 0 | - | 4.99 | 427,188 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,924 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,987 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,507 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,810 |
| Population Trivia | 0 | - | 4.32 | 27,589 |
| Cities in Squares on a Map - North America | 0 | - | 4.31 | 21,599 |
| World Capitals Quiz | 0 | - | 5.00 | 5,113,234 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,881 |
| Himalayan Countries | 0 | - | 4.93 | 140,795 |
| Andean Countries | 0 | - | 4.94 | 85,784 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,906 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,471 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,456 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,679 |
| Danube Countries | 0 | - | 4.97 | 72,543 |
