| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,799 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,943 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,853 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,929 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,958 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,810 |
| Africa Capitals Quiz | 0 | - | 4.99 | 729,958 |
| Random African Capital to Country | 0 | - | 4.97 | 99,711 |
| Random African Country to Capital | 0 | - | 4.94 | 70,198 |
| African Capitals by Map | 0 | - | 4.99 | 132,113 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,557 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,908 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,506 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,276 |
| African Capitals - Map Quiz | 0 | - | 4.93 | 61,631 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,012 |
| Countries with Megacities | 0 | - | 4.99 | 246,563 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,934 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,811 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,382 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,761 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,535 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,491 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,023 |
| Nordic Countries and Capitals | 0 | - | 4.95 | 82,995 |
| Random European Capital to Country | 0 | - | 4.98 | 189,149 |
| Random European Country to Capital | 0 | - | 4.92 | 147,397 |
| Random Asian Country to Capital | 0 | - | 4.92 | 95,341 |
| Random Asian Capital to Country | 0 | - | 4.97 | 101,371 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,084 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,783 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,834 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,829 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,444 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,551 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,211 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,605 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,595 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,791 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,803 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,922 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,451 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,486 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,492 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,534 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,024 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,133 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,720 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,643 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,484 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,186 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,700 |
| Name a City - European Countries | 0 | - | 4.92 | 64,347 |
| Asia Capitals Quiz | 0 | - | 4.98 | 685,579 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,360 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,301 |
| Random African Capitals on a Map | 0 | - | 4.96 | 54,246 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,161 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,650 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,083 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,116 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,267 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,863 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,362 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,545 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,258 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,373 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,805 |
| Largest City by Island | 0 | - | 4.87 | 71,009 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,358 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,504 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,511 |
| Megacities on a World Map | 0 | - | 4.98 | 250,831 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,047 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,772 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,834 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,649 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,731 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,114 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,407 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,246 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,226 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,571 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,534 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,771 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,168 |
| 15 Largest Cities in Africa With a Map | 0 | - | 4.95 | 109,317 |
| Most-Visited Cities in Europe | 0 | - | 4.82 | 73,754 |
| Europe Capital to Country | 0 | - | 4.99 | 247,469 |
| Asia Capital to Country | 0 | - | 4.96 | 125,710 |
| EU Capitals with No Hints | 0 | - | 4.96 | 144,400 |
| European Capitals by Map | 0 | - | 4.99 | 136,157 |
| Asian Capitals by Map | 0 | - | 4.98 | 61,080 |
| 10 Westernmost Capital Cities in Europe | 0 | - | 4.88 | 91,146 |
| 10 Northernmost Capital Cities in Europe | 0 | - | 4.96 | 83,578 |
| European Coastal Capitals | 0 | - | 4.95 | 89,714 |
| 10 Easternmost Capital Cities in Asia | 0 | - | 4.89 | 52,171 |
| Capitals of Oceania Quiz | 0 | - | 4.99 | 266,651 |
| Europe by Capitals and Borders in 30 Seconds | 0 | - | 4.88 | 221,688 |
| Capitals of Mediterranean Countries | 0 | - | 4.95 | 81,407 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,074 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,042 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,592 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 63,979 |
| Most Populous Islands | 0 | - | 4.79 | 121,956 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,197 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,400 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,601 |
| Most Populous Islands of Europe | 0 | - | 4.56 | 25,719 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,344 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,837 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,117 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,911 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,970 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,254 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,552 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,895 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,471 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,559 |
| Official Cities in the UK | 0 | - | 4.89 | 280,417 |
| All 1M+ Cities in Africa on a Map | 0 | - | 4.93 | 25,764 |
| South America Capitals Quiz | 0 | - | 5.00 | 477,089 |
| North America Capitals Quiz | 0 | - | 4.99 | 216,764 |
| Top 10 Most Remote European Capitals | 0 | - | 4.86 | 93,381 |
| European Capitals - Map Quiz | 0 | - | 4.97 | 118,080 |
| Middle East Capital Cities Quiz | 0 | - | 4.96 | 87,140 |
| European Capitals Furthest from the Sea | 0 | - | 4.92 | 81,681 |
| Asian Capitals - Map Quiz | 0 | - | 4.95 | 60,414 |
| European Capitals Ending in N | 0 | - | 4.92 | 80,744 |
| Capitals of the Stans | 0 | - | 4.95 | 26,397 |
| Boundary Waters | 0 | - | 4.92 | 88,026 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,798 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,241 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,238 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,813 |
| "Second Best" Geography Edition #3 | 0 | - | 4.90 | 69,709 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,932 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,521 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,102 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,401 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,538 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,749 |
| British Cities with the Most Tourists | 0 | - | 4.82 | 69,158 |
| 100 Biggest Cities and Towns in the UK | 0 | - | 4.97 | 144,840 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,298 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,712 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,376 |
| Name a Valid European Capital | 0 | - | 4.95 | 150,785 |
| European Capital Superlatives - Top 2 | 0 | - | 4.94 | 80,647 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,621 |
| African Countries with the Most Christians | 0 | - | 4.94 | 74,840 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,792 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,342 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,428 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,885 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,892 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,679 |
| Biggest City by Region | 0 | - | 4.50 | 35,990 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,892 |
| 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 | 82,904 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,248 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,896,479 |
| Landlocked Countries | 0 | - | 4.99 | 413,334 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 552,253 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,112 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 75,780 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,994 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,229 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,424 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,241 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,695 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,739 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,440 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,503 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,207 |
| World Capitals Quiz | 0 | - | 5.00 | 5,029,629 |
| South American Capitals - Map Quiz | 0 | - | 4.98 | 129,411 |
| Most Guessed European Capitals | 0 | - | 4.87 | 101,179 |
| Melbourne Suburbs | 0 | - | 4.84 | 51,741 |
| Every African Country Shape | 0 | - | 4.90 | 86,049 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,101 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,155 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,421 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,816 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,145 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,968 |
| Population Trivia | 0 | - | 4.32 | 27,419 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,347 |
| Biggest Cities in History | 0 | - | 4.52 | 89,098 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,109 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,638 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,167 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,177 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,799 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,184 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,990 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,159 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,472 |
