| Biggest Cities in the World | 0 | - | 4.91 | 801,672 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,113 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,403 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,221 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,141 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,870 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 144,901 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,271 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,867 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,024 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,445 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,241 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 70,354 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,887 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,982 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,333 |
| Biggest Cities in the United States | 0 | - | 4.94 | 981,774 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 366,933 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,133 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,085 |
| Largest City by Island | 0 | - | 4.87 | 72,109 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,212 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,271 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,831 |
| Megacities on a World Map | 0 | - | 4.98 | 255,525 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 579,757 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,544 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,249 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,352 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 168,782 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,484 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 124,502 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 107,926 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,070 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,014 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,614 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,450 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,243 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,795 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,233 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,054 |
| Countries with Megacities | 0 | - | 4.99 | 264,945 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,882 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,565 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,145 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,638 |
| Jewish Cities Quiz | 0 | - | 4.34 | 61,886 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,038 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,667 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,938 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,169 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,803 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,070 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,189 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,786 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,580 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,059 |
| Biggest City by Region | 0 | - | 4.50 | 36,297 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,211 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,609 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,604 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,798 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,237 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,387 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,375 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 83,327 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,099 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,549 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,544 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,474 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 223,488 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,997 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,327 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,241 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,611 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,793 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,270 |
| Biggest Cities in Europe | 0 | - | 4.73 | 547,461 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 32,065 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 165,084 |
| Biggest Cities in History | 0 | - | 4.52 | 90,334 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,329 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,331 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 126,650 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,501 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,033 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,556 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,515 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,161 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,657 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,583 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,822 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,621 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,225 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,664 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,343 |
| Hindu Countries | 0 | - | 4.86 | 50,332 |
| Countries of Europe by Population | 0 | - | 4.98 | 181,654 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,928 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,916 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,313 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,725 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,790 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,214 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,377 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,538 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,014 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,096 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,101 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,860 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,577 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,742 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 96,645 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,288 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,306 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,294 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,693 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,830 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,769 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,304 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,554 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,327 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,954 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,359 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,664 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,447 |
| Countries with the Most Christians | 0 | - | 4.93 | 143,680 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,593 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,262 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,424 |
| Countries with the Most Hindus | 0 | - | 4.90 | 123,235 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,605 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,381 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,075 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,770 |
| Most Populous Islands | 0 | - | 4.80 | 123,088 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,329 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,580 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 233,444 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,311 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,751 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,405 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,886 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,607 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,574 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,334 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,197 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,554 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,838 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,519 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,891 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,012 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,548 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,952 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,019 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,478 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,246 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,985 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,493 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,950 |
| Divided World City Name Puzzle #1 | 0 | - | 4.84 | 49,006 |
| Divided World City Name Puzzle #2 | 0 | - | 4.83 | 37,206 |
| Capitals of Countries with the Biggest Economies | 0 | - | 4.93 | 95,274 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,859 |
| Orthodox Countries | 0 | - | 4.92 | 132,337 |
| African Countries with the Most Muslims | 0 | - | 4.80 | 101,049 |
| Battle to Country | 0 | - | 4.91 | 53,577 |
| Monarchies of Europe | 0 | - | 4.90 | 98,405 |
| Monarchies of Asia | 0 | - | 4.97 | 71,267 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,058 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,075 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,742 |
| Boundary Waters | 0 | - | 4.92 | 88,603 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 35,273 |
| Category Elimination - European Geography #1 | 0 | - | 4.98 | 234,134 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,330 |
| Category Elimination - European Geography #2 | 0 | - | 4.99 | 167,821 |
| Category Elimination - Asian Geography #1 | 0 | - | 4.86 | 110,409 |
| Category Elimination - African Geography #1 | 0 | - | 4.90 | 92,659 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,813 |
| Category Elimination - Asian Geography #2 | 0 | - | 4.94 | 97,153 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,664 |
| "Second Best" Geography Edition #3 | 0 | - | 4.89 | 70,625 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,621 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 75,835 |
| Category Elimination - Capital Cities #1 | 0 | - | 4.88 | 133,504 |
| Category Elimination - Capital Cities #2 | 0 | - | 4.89 | 80,824 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,318 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,548 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,801 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,892 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,854 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,751 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,432 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,397 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,312 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,532 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,880 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,811 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,517 |
