| Biggest Cities in the World | 0 | - | 4.91 | 797,837 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,828 |
| Biggest City by Time Zone | 0 | - | 4.88 | 67,773 |
| Biggest City in Every Country | 0 | - | 4.98 | 100,326 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 224,706 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 110,169 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 133,449 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 79,672 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 84,394 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 79,729 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 57,511 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,942 |
| Ten Southernmost Megacities | 0 | - | 4.87 | 64,092 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 67,531 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 130,132 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 417,029 |
| Biggest Cities in the United States | 0 | - | 4.94 | 977,220 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 365,883 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 165,825 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,048 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,548 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 130,342 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,813 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,079 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,243 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 128,395 |
| Biggest Cities by Language | 0 | - | 4.96 | 246,253 |
| Largest City by Island | 0 | - | 4.87 | 71,791 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,883 |
| Most Populous World Capitals | 0 | - | 4.94 | 175,826 |
| Biggest European Cities by Century | 0 | - | 4.99 | 145,371 |
| Megacities on a World Map | 0 | - | 4.98 | 254,157 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 577,667 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,295 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 74,847 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 114,462 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 168,237 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,697 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 23,364 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,048 |
| Biggest Cities in Asia | 0 | - | 4.95 | 116,823 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,967 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 345,236 |
| Megacities on an Empty Map | 0 | - | 4.97 | 118,272 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,896 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,264 |
| Countries with Megacities | 0 | - | 4.99 | 262,460 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,096 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,118 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,397 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,170 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,543 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,047 |
| Europe by Borders in 30 Seconds | 0 | - | 4.98 | 427,911 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,869 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,490 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 224,142 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 136,662 |
| Biggest Cities Near a Border | 0 | - | 4.22 | 31,905 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 115,172 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,496 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,070 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,954 |
| Biggest City by Region | 0 | - | 4.50 | 36,177 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,105 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,173 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,341 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,219 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,395 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,644 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,613 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,800 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,340 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,464 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,013 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 159,166 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,173 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 118,279 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 79,327 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 41,702 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 116,684 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,136 |
| Biggest Cities in Europe | 0 | - | 4.73 | 546,007 |
| Countries with the Most Borders | 0 | - | 4.97 | 388,202 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,829 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,241 |
| Biggest English-Speaking Cities | 0 | - | 4.44 | 152,496 |
| Fastest Growing U.S. Cities | 0 | - | 4.35 | 73,027 |
| Biggest Cities in History | 0 | - | 4.52 | 90,087 |
| Top 10 World Cities Through History | 0 | - | 4.42 | 76,995 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 28,048 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,793 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,544 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,024 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 125,888 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,382 |
| Biggest Cities by Trait #2 | 0 | - | 4.47 | 20,575 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 56,621 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,433 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 36,355 |
| Biggest Cities in Germany | 0 | - | 4.95 | 293,249 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,246 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 116,557 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,326 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 122,645 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,267 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,008 |
| Countries of Europe by Population | 0 | - | 4.98 | 180,525 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,511 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,862 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 222,873 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,190 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,145 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,653 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,219 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,500 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,172 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,875 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,027 |
| Countries with the Shortest Total Borders | 0 | - | 4.94 | 103,777 |
| Countries A-Z by Neighbor | 0 | - | 5.00 | 180,381 |
| Monarchies Bordering Monarchies | 0 | - | 4.81 | 60,218 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.73 | 73,447 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,276 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 65,641 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 95,838 |
| All Cities in China with Population of 1 Million | 0 | - | 4.81 | 46,000 |
| Cities of China (With Some Help) | 0 | - | 4.90 | 31,526 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,176 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 98,542 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,516 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 41,466 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 114,068 |
| Boundary Waters | 0 | - | 4.92 | 88,429 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 35,125 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,009 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 62,336 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,412 |
| Most Populous Islands | 0 | - | 4.80 | 122,870 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,290 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,521 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 232,710 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 183,713 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 193,188 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,747 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,790 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,389 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 159,154 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,184 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,851 |
| Colour in the Flag Map by Guessing Cities | 0 | - | 4.92 | 64,530 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,918 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 162,646 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 105,251 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 87,043 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 126,481 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 128,162 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,665 |
| Countries by Capitals and Borders in 90 Seconds | 0 | - | 4.84 | 226,469 |
| European Countries with One Border | 0 | - | 4.97 | 182,669 |
| European Countries with the Fewest Borders | 0 | - | 4.97 | 179,476 |
| Random Countries by Borders | 0 | - | 4.99 | 82,366 |
| U.S. State Border Crossings | 0 | - | 4.97 | 96,431 |
| Biggest Cities in the Sun Belt on a Map | 0 | - | 4.68 | 23,627 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.70 | 107,708 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,720 |
| Biggest English Cities by Century | 0 | - | 4.90 | 106,216 |
| Five Biggest Cities by Country | 0 | - | 4.69 | 166,492 |
| Flags to Largest Cities | 0 | - | 4.54 | 51,331 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 222,909 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,397,866 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 115,607 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,377 |
| Biggest European Cities by Letter | 0 | - | 4.54 | 126,605 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,459 |
| Largest World Cities With Four Letters | 0 | - | 4.39 | 62,913 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,972 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,913 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,943 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,798 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,999 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,367 |
| Most Populous U.S. Cities as a Percent of Their State | 0 | - | 4.78 | 55,142 |
| Cities in European Economic Areas on a Map | 0 | - | 4.69 | 17,565 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,871 |
| Landlocked Countries | 0 | - | 4.99 | 419,727 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 570,245 |
| Countries with the Most Borders A-Z | 0 | - | 4.98 | 125,198 |
| Richest Countries Bordering Each Other | 0 | - | 4.99 | 154,095 |
| Countries Bordering the Mediterranean - Map Quiz | 0 | - | 4.87 | 88,980 |
| Rich Countries Bordering Poor Countries | 0 | - | 4.89 | 100,015 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 382,947 |
| Bordering Countries with the Largest GDPs | 0 | - | 4.97 | 76,376 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,547 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,735 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,474 |
| Population Trivia | 0 | - | 4.32 | 27,486 |
| Most Populated Countries Bordering the Indian Ocean | 0 | - | 4.27 | 28,165 |
| Cities in Squares on a Map - North America | 0 | - | 4.30 | 21,455 |
| World Capitals Quiz | 0 | - | 5.00 | 5,068,824 |
