| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,607 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,920 |
| Biggest Cities in the World | 0 | - | 4.91 | 807,380 |
| Biggest City by Time Zone | 0 | - | 4.88 | 69,142 |
| Biggest City in Every Country | 0 | - | 4.98 | 102,266 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 33,003 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,968 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,737 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 150,743 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,995 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,423 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 421,311 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 81,141 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,738 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,878 |
| Ten Southernmost Megacities | 0 | - | 4.84 | 65,340 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,596 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,846 |
| Biggest Cities in the United States | 0 | - | 4.94 | 989,616 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 368,625 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,824 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,914 |
| Largest City by Island | 0 | - | 4.87 | 72,596 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,518 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,284 |
| Megacities on a World Map | 0 | - | 4.98 | 257,597 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 583,435 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,872 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,871 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,858 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,905 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 167,221 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 125,237 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,921 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 349,556 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 169,279 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,419 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,499 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,395 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,642 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 228,212 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,611 |
| Countries with Megacities | 0 | - | 4.99 | 268,087 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,259 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,394 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,594 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,492 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,384 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 74,045 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 226,187 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,978 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,777 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,617 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,134 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 32,126 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,229 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,689 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,189 |
| Biggest City by Region | 0 | - | 4.50 | 36,425 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,385 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,269 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 48,228 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,598 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,333 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,465 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 83,636 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 85,041 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,651 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,498 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 63,068 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,609 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,496 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,590 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,875 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,137 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,404 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,754 |
| Biggest Cities in Europe | 0 | - | 4.70 | 549,923 |
| Africa Capitals Quiz | 0 | - | 4.99 | 745,368 |
| Asia Capitals Quiz | 0 | - | 4.98 | 700,252 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 166,088 |
| Biggest Cities in History | 0 | - | 4.52 | 90,729 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 79,246 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,627 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 127,880 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,655 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,630 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,744 |
| Biggest Cities in the Blue Banana | 0 | - | 4.57 | 36,745 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,752 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,845 |
| Biggest Cities Starting With A | 0 | - | 4.63 | 125,295 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,280 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 110,107 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,728 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 144,370 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,910 |
| Countries of Europe by Population | 0 | - | 4.98 | 183,759 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,695 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,071 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,427 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,993 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,630 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,900 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,933 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 91,096 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,289 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,209 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,156 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,936 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,986 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,765 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,742 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,528 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 100,454 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 48,116 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 42,466 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 224,093 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,053 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,637 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,311 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,586 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,946 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,905 |
| Europe Capital to Country | 0 | - | 4.99 | 252,694 |
| Asia Capital to Country | 0 | - | 4.96 | 127,735 |
| EU Capitals with No Hints | 0 | - | 4.96 | 147,367 |
| European Capitals by Map | 0 | - | 4.99 | 142,661 |
| African Capitals by Map | 0 | - | 4.99 | 142,677 |
| Asian Capitals by Map | 0 | - | 4.98 | 64,158 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 93,176 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,434 |
| European Coastal Capitals | 0 | - | 4.95 | 91,537 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,287 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 273,460 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 226,818 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,268 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 165,864 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 171,442 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,652 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,852 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,555 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 68,733 |
| Most Populous Islands | 0 | - | 4.80 | 123,468 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,409 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,685 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 235,010 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,529 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 195,383 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 105,138 |
| Countries by Population Decrease | 0 | - | 4.46 | 50,032 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 109,001 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 160,149 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,559 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,740 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,932 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.64 | 108,229 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 65,042 |
| Biggest English Cities by Century | 0 | - | 4.91 | 107,110 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 167,520 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,950 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.31 | 41,010 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 224,458 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 163,971 |
| Biggest Cities Starting With C | 0 | - | 4.12 | 105,907 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,602 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 127,501 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,970 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,407 |
| South America Capitals Quiz | 0 | - | 5.00 | 485,789 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,776 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,392 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,752 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,366 |
| Five Most Inland Capital Cities by Continent | 0 | - | 4.92 | 13,829 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,523 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,698 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 62,088 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,848 |
| European Countries with One Border | 0 | - | 4.97 | 184,082 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 180,801 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,897 |
| Highest Fertility Countries | 0 | - | 4.90 | 27,329 |
| Capitals of the Stans | 0 | - | 4.95 | 27,253 |
| Boundary Waters | 0 | - | 4.92 | 88,868 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.88 | 35,480 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,884 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,617 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 61,094 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,888 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,246 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,833 |
| Name a Valid European Capital | 0 | - | 4.95 | 154,067 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,719 |
| Countries That Border Russia | 0 | - | 4.98 | 465,028 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,679 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 155,076 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.86 | 89,556 |
| Countries by Bordering Flags #1 | 0 | - | 4.90 | 113,434 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 100,740 |
