| Biggest Cities in the World | 0 | - | 4.91 | 794,112 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,427 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,168 |
| Biggest City in Every Country | 0 | - | 4.98 | 99,422 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 223,324 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,470 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 131,783 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,039 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,952 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 415,405 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,122 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,436 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,511 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 57,046 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 67,092 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 129,299 |
| Biggest Cities in the United States | 0 | - | 4.93 | 972,002 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,859 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 127,519 |
| Biggest Cities by Language | 0 | - | 4.96 | 245,447 |
| Largest City by Island | 0 | - | 4.87 | 71,410 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 70,600 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,967 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,967 |
| Megacities on a World Map | 0 | - | 4.98 | 252,360 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 575,513 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,035 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,378 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 113,636 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,756 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,291 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 123,545 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,510 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,900 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 343,624 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,423 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,156 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,736 |
| Megacities on an Empty Map | 0 | - | 4.97 | 117,406 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,577 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,300 |
| Countries with Megacities | 0 | - | 4.99 | 248,981 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,149 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,555 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,500 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,515 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,731 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,703 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,284 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 223,245 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,143 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 114,404 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,026 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,869 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,216 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,993 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,845 |
| Biggest City by Region | 0 | - | 4.50 | 36,072 |
| Most Populous 2nd Cities | 0 | - | 4.77 | 57,005 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,731 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,804 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,792 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,108 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,287 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,078 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,027 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,277 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,092 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,841 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,322 |
| Biggest World Cities A-Z | 0 | - | 4.62 | 222,291 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,276 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,915 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,332 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,090 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,091 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,636 |
| Biggest Cities in Europe | 0 | - | 4.70 | 543,717 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,945 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,815 |
| Biggest Cities in History | 0 | - | 4.52 | 89,457 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,217 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,798 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,131 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,283 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,207 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,316 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,199 |
| Biggest Cities in Germany | 0 | - | 4.95 | 292,334 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,861 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,255 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,939 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,260 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,812 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,314 |
| Hindu Countries | 0 | - | 4.86 | 49,828 |
| Countries of Europe by Population | 0 | - | 4.98 | 179,310 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,815 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,733 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,167 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,338 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,864 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,370 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,732 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,910 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,612 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,944 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,008 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,719 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,512 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,406 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,117 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 45,722 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,050 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 97,837 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,334 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,101 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 113,364 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,983 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,693 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,570 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 85,046 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,796 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,048 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,571 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,305 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,525 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,517 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,591 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,646 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,260 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,165 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 49,318 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,267 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,398 |
| Most Populous Islands | 0 | - | 4.80 | 122,263 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,240 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,457 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,764 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,629 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 192,479 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,362 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,702 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,025 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,806 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,015 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,454 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.84 | 23,168 |
| Biggest Cities in Latin America | 0 | - | 4.47 | 64,584 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,025 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,063 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,822 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,075 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,881 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,214 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,991 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,832 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,104 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,790 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,972 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,349 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,896 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,653 |
| Orthodox Countries | 0 | - | 4.92 | 130,945 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,633 |
| Battle to Country | 0 | - | 4.91 | 52,921 |
| Monarchies of Europe | 0 | - | 4.90 | 97,704 |
| Monarchies of Asia | 0 | - | 4.97 | 70,835 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,633 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,107 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,506 |
| Boundary Waters | 0 | - | 4.92 | 88,234 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,969 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 231,805 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,656 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 166,091 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 109,330 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,784 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,812 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 96,055 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 60,126 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 70,042 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,170 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 132,133 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,948 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,918 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,713 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,179 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,089 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,775 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,539 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,466 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,642 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,501 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,686 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,265 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,414 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,398 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,984 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,908 |
