| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,841 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,920 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,950 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,802 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,927 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,911 |
| Random African Capital to Country | 0 | - | 4.97 | 99,708 |
| Random African Country to Capital | 0 | - | 4.94 | 70,196 |
| African Capitals by Map | 0 | - | 4.99 | 132,106 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,548 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,904 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,268 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,615 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,468 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,448 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,462 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,993 |
| Countries with Megacities | 0 | - | 4.99 | 246,516 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,912 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,796 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,365 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,754 |
| Biggest Cities in the World | 0 | - | 4.92 | 789,946 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,991 |
| Random European Capital to Country | 0 | - | 4.98 | 189,140 |
| Random European Country to Capital | 0 | - | 4.92 | 147,393 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,339 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,367 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,150 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,077 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,777 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,824 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,823 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,441 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,542 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,342 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,277 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,206 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,594 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,584 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,763 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,797 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,899 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,435 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,480 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,470 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,522 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,019 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,129 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,704 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,634 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,470 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,082 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,681 |
| Name a City - European Countries | 0 | - | 4.92 | 64,337 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,499 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,241 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,590 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,142 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,648 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,080 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,112 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,260 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,854 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,357 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,537 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,255 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,351 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,794 |
| Largest City by Island | 0 | - | 4.87 | 71,006 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,354 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,491 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,226 |
| Megacities on a World Map | 0 | - | 4.98 | 250,818 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,017 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,765 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,824 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,628 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,100 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,399 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,237 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,218 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,562 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,529 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,765 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,160 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,311 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,748 |
| Europe Capital to Country | 0 | - | 4.99 | 247,438 |
| Asia Capital to Country | 0 | - | 4.96 | 125,696 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,392 |
| European Capitals by Map | 0 | - | 4.99 | 136,132 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,064 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,139 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,573 |
| European Coastal Capitals | 0 | - | 4.95 | 89,710 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,168 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,628 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,676 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,405 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,069 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,038 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,337 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,114 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,959 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,234 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,541 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,864 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,458 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,552 |
| Official Cities in the UK | 0 | - | 4.89 | 280,397 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,066 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,746 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,373 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,071 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,136 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,679 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,412 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,740 |
| African Diaspora - Top 10 Countries | 0 | - | 4.92 | 72,227 |
| European Diaspora - Top 11 Countries | 0 | - | 4.90 | 95,009 |
| 10 European Countries with the Most Tourists | 0 | - | 4.98 | 136,308 |
| 10 Asian Countries with the Most Tourists | 0 | - | 4.89 | 104,985 |
| Most Populous Islands | 0 | - | 4.78 | 121,952 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,196 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,399 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,601 |
| Most Populous Islands of Europe | 0 | - | 4.56 | 25,716 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,835 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,909 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 25,760 |
| Capitals of the Stans | 0 | - | 4.95 | 26,390 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,928 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,516 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,093 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,389 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,524 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,736 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,154 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.97 | 144,827 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,270 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,689 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,361 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,777 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,645 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,615 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,832 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,674 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,334 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,207 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,084 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,479 |
| Boundary Waters | 0 | - | 4.92 | 88,025 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,795 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,237 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,230 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,812 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,425 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 75,778 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,880 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,890 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,676 |
| Biggest City by Region | 0 | - | 4.50 | 35,989 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,889 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,216 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,420 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,220 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,008 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,215 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,902 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,678 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,714 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,430 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,489 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,246 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,073 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,398 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,173 |
| Melbourne Suburbs | 0 | - | 4.84 | 51,711 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,891,792 |
| Landlocked Countries | 0 | - | 4.99 | 413,287 |
| Every African Country Shape | 0 | - | 4.90 | 86,030 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 76,072 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 148,101 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,639 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,408 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,811 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,137 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,962 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,108 |
| Population Trivia | 0 | - | 4.32 | 27,419 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,340 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,944 |
| Biggest Cities in History | 0 | - | 4.52 | 89,092 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,106 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,632 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.94 | 124,151 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,172 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,792 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,181 |
