| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 185,021 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,848 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,835 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,945 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,390 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,690 |
| Asia Capitals Quiz | 0 | - | 4.98 | 698,729 |
| Random Asian Country to Capital | 0 | - | 4.92 | 96,979 |
| Random Asian Capital to Country | 0 | - | 4.97 | 103,411 |
| Asia Capital to Country | 0 | - | 4.96 | 127,379 |
| Asian Capitals by Map | 0 | - | 4.98 | 63,893 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 53,186 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,131 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,416 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 88,387 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 61,937 |
| Capitals of the Stans | 0 | - | 4.95 | 27,136 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,965 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,991 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,309 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,709 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,968 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,449 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,120 |
| Countries with Megacities | 0 | - | 4.99 | 267,043 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,816 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,117 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,134 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,226 |
| Biggest Cities in the World | 0 | - | 4.91 | 805,434 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,300 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 84,053 |
| Random European Capital to Country | 0 | - | 4.98 | 192,120 |
| Random European Country to Capital | 0 | - | 4.93 | 165,873 |
| Random African Capital to Country | 0 | - | 4.97 | 101,335 |
| Random African Country to Capital | 0 | - | 4.95 | 71,742 |
| Countries Closest to Vietnam | 0 | - | 4.96 | 94,374 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,624 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 178,073 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,772 |
| World Capitals Closest to Bangkok | 0 | - | 4.91 | 41,149 |
| Random Asian Capitals on a Map | 0 | - | 4.83 | 51,365 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,425 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,316 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,009 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,638 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,889 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,209 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,604 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,921 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,934 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 32,729 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,368 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,441 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 149,922 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,774 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,235 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,567 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,950 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,611 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,709 |
| Ten Southernmost Megacities | 0 | - | 4.88 | 65,203 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,381 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,317 |
| Biggest Cities in the United States | 0 | - | 4.94 | 986,873 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,995 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,564 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 48,007 |
| Name a City - European Countries | 0 | - | 4.90 | 66,158 |
| Africa Capitals Quiz | 0 | - | 4.99 | 743,636 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,400 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,389 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,901 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,337 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,658 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,745 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,883 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,191 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,571 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,643 |
| Largest City by Island | 0 | - | 4.87 | 72,443 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,419 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,679 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,133 |
| Megacities on a World Map | 0 | - | 4.98 | 256,873 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 581,893 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,759 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,656 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,367 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,642 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,793 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,878 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,514 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,191 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,511 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,853 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,758 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.96 | 111,447 |
| Most-Visited Cities in Europe | 0 | - | 4.83 | 76,045 |
| Europe Capital to Country | 0 | - | 4.99 | 252,040 |
| EU Capitals with No Hints | 0 | - | 4.96 | 146,949 |
| European Capitals by Map | 0 | - | 4.99 | 142,043 |
| African Capitals by Map | 0 | - | 4.99 | 142,112 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 92,853 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 85,167 |
| European Coastal Capitals | 0 | - | 4.95 | 91,296 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 272,636 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 225,750 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 82,157 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,648 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,917 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,024 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,384 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 348,653 |
| South America Capitals Quiz | 0 | - | 5.00 | 484,938 |
| Most Populous Islands of Europe | 0 | - | 4.56 | 25,942 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,973 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,557 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,798 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,979 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,189 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,503 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,235 |
| Official Cities in the UK | 0 | - | 4.89 | 286,186 |
| North America Capitals Quiz | 0 | - | 4.99 | 222,156 |
| African Capitals - Map Quiz | 0 | - | 4.94 | 63,220 |
| Top 10 Most Remote European Capitals | 0 | - | 4.87 | 94,573 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 120,092 |
| Asian Coastal Capitals | 0 | - | 4.52 | 22,270 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 82,574 |
| 10 Westernmost Capital Cities in Asia | 0 | - | 4.64 | 16,206 |
| Name a Valid Asian Capital | 0 | - | 4.53 | 61,989 |
| European Capitals Ending in N | 0 | - | 4.92 | 81,700 |
| "Stan" Countries - Map Quiz | 0 | - | 4.98 | 137,472 |
| Vietnam Country Quiz | 0 | - | 4.68 | 63,887 |
| Most Populous Islands | 0 | - | 4.80 | 123,322 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,381 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,647 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,976 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,488 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,784 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,310 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,969 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,733 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,451 |
| British Cities with the Most Tourists | 0 | - | 4.83 | 70,913 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.98 | 151,144 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,951 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,867 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,658 |
| Most Guessed Asian Capitals | 0 | - | 4.51 | 66,030 |
| Name a Valid European Capital | 0 | - | 4.95 | 153,597 |
| European Capital Superlatives - Top 2 | 0 | - | 4.95 | 81,553 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,390 |
| Vietnam War Countries | 0 | - | 4.82 | 94,608 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 246,421 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,235 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,028 |
| Boundary Waters | 0 | - | 4.92 | 88,758 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,409 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,692 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,334 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,952 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,118 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 76,331 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,095 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,645 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,154 |
| Biggest City by Region | 0 | - | 4.50 | 36,389 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,335 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,521 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,056 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 48,024 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,432 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,305 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,440 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,547 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,582 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,434 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,423 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,169 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,902 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,569 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,503 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,188 |
| Biggest Cities in China | 0 | - | 4.53 | 159,854 |
| Biggest Cities in India | 0 | - | 4.64 | 68,054 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,698,555 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,975 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,418 |
| India State Capitals Quiz | 0 | - | 4.28 | 59,938 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 131,407 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,813 |
| Random African Capitals on a Map | 0 | - | 4.96 | 55,255 |
| Random European Capitals on a Map | 0 | - | 4.97 | 135,387 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,641 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,312 |
| Melbourne Suburbs | 0 | - | 4.86 | 54,311 |
| Which City in Europe? | 0 | - | 4.83 | 107,880 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,869,177 |
