| Biggest Cities in the World | 0 | - | 4.91 | 791,320 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,196 |
| Biggest City by Time Zone | 0 | - | 4.88 | 66,788 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,843 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 222,264 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 109,034 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 130,467 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,652 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,624 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 414,007 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,712 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,144 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,247 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,812 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 66,788 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,664 |
| Biggest Cities in the United States | 0 | - | 4.93 | 967,900 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 364,091 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,737 |
| Biggest Cities by Language | 0 | - | 4.96 | 236,293 |
| Largest City by Island | 0 | - | 4.87 | 71,120 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,438 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,645 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,325 |
| Megacities on a World Map | 0 | - | 4.98 | 251,263 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,758 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,869 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,947 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,947 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,277 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,848 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,179 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,359 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,849 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,412 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,148 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,588 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,608 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,623 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,365 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,618 |
| Countries with Megacities | 0 | - | 4.99 | 247,537 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,452 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,196 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,865 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,124 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,665 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,571 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,152 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,664 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,710 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,925 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,259 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,935 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,990 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,921 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,746 |
| Biggest City by Region | 0 | - | 4.50 | 36,014 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,925 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,386 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,536 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,429 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,040 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,243 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,949 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,805 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,901 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,638 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,595 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,267 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,499 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,018 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,269 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,019 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,561 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,808 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,399 |
| Biggest Cities in Europe | 0 | - | 4.70 | 542,522 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,894 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,490 |
| Biggest Cities in History | 0 | - | 4.52 | 89,185 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,147 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,690 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,459 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,218 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,913 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,217 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,045 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,558 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,575 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,034 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,677 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,980 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,274 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,064 |
| Hindu Countries | 0 | - | 4.86 | 49,642 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,338 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,389 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,681 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,112 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,207 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,477 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,069 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,498 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,689 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,350 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,877 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,983 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,680 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,478 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,262 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,517 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,971 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,210 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,098 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,856 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,679 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,610 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,414 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,361 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,702 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,641 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,899 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,317 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,611 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,022 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,220 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,240 |
| Countries with the Most Hindus | 0 | - | 4.90 | 122,424 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,150 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,059 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 49,011 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,059 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,306 |
| Most Populous Islands | 0 | - | 4.79 | 122,043 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,212 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,417 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 231,147 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,145 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,984 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,064 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,641 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,872 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,518 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,891 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,211 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,998 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,503 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,652 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,765 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,771 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,857 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,857 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,878 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,705 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,678 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,848 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,516 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,684 |
| Divided World City Name Puzzle #1 | 0 | - | 4.88 | 48,147 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 94,759 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,159 |
| Orthodox Countries | 0 | - | 4.91 | 130,494 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 100,473 |
| Battle to Country | 0 | - | 4.91 | 52,597 |
| Monarchies of Europe | 0 | - | 4.90 | 97,413 |
| Monarchies of Asia | 0 | - | 4.97 | 70,655 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,472 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 110,709 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,420 |
| Boundary Waters | 0 | - | 4.92 | 88,080 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,850 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 230,793 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,386 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 165,363 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.85 | 108,826 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 91,184 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.94 | 61,433 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 95,662 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,902 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,811 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,007 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.87 | 131,662 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 79,613 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,729 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,370 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,925 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,418 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,430 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 113,321 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,158 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,331 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,193 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,531 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 113,693 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,271 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,328 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,761 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,870 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,323 |
