| Biggest Cities in the World | 0 | - | 4.92 | 790,307 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,110 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,641 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,662 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,899 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,848 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 130,024 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,483 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,513 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,574 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,050 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,155 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,739 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 66,678 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,523 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,588 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,577 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,768 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,605 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,974 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,449 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,849 |
| Largest City by Island | 0 | - | 4.87 | 71,038 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,392 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,541 |
| Biggest European Cities by Century | 0 | - | 4.98 | 143,385 |
| Megacities on a World Map | 0 | - | 4.98 | 250,930 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,794 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,864 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,730 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,144 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,831 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,206 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,160 |
| Countries with Megacities | 0 | - | 4.99 | 246,825 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,078 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,946 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,495 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,832 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,030 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,317 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,561 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,016 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,504 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,291 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,956 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,596 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,911 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,903 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,700 |
| Biggest City by Region | 0 | - | 4.50 | 35,994 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,898 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,534 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,115 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,461 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,579 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,017 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,221 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,919 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,788 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,254 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,832 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,904 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,875 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,476 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,591 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,258 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,652 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,085 |
| Biggest Cities in Europe | 0 | - | 4.70 | 542,137 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,266 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,444 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,284 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,729 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,776 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,492 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,529 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,383 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,861 |
| Biggest Cities in History | 0 | - | 4.52 | 89,125 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,118 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,978 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,665 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,463 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,183 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,217 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,197 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,499 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,959 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,593 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,902 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,171 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,989 |
| Boundary Waters | 0 | - | 4.92 | 88,037 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,812 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,276 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,281 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,830 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,056 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,218 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,138 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,327 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,920 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,398 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,586 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,297 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,650 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,230 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,825 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,261 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,463 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,286 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,261 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,606 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,559 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,808 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,213 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 164,107 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,089 |
| Most Populous Islands | 0 | - | 4.79 | 121,984 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,201 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,404 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,608 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,844 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,930 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,107 |
| Biggest Cities Near a Border | 0 | - | 4.21 | 31,748 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,029 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,913 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,295 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,276 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,940 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,013 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,060 |
| Most Populous Second Cities in the U.S. | 0 | - | 4.30 | 40,840 |
| Biggest Cities Starting With B | 0 | - | 4.34 | 161,760 |
| Biggest Cities Starting With C | 0 | - | 4.11 | 104,587 |
| Biggest Cities Starting With K | 0 | - | 4.31 | 86,626 |
| Biggest Cities Starting With S | 0 | - | 4.40 | 125,766 |
| Biggest Cities Starting With T | 0 | - | 4.29 | 127,436 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,940 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 181,988 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,844 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,982 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,827 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,391 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,139 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,589 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,914,224 |
| Landlocked Countries | 0 | - | 4.99 | 413,534 |
| Biggest Cities with a Muslim Majority | 0 | - | 4.69 | 107,308 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,476 |
| Five Biggest Cities by Country | 0 | - | 4.70 | 165,653 |
| Flags to Largest Cities | 0 | - | 4.55 | 50,777 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,356 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,159 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 94,994 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,127 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 99,452 |
| Population Trivia | 0 | - | 4.32 | 27,423 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,949 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,593 |
| Largest World Cities With Four Letters | 0 | - | 4.36 | 50,649 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,880 |
| World Capitals Quiz | 0 | - | 5.00 | 5,030,996 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,558 |
| Himalayan Countries | 0 | - | 4.95 | 135,329 |
| Andean Countries | 0 | - | 4.94 | 82,810 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,205 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,186 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,884 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,591 |
| Danube Countries | 0 | - | 4.97 | 71,072 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,751 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,530 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,457 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,379 |
| European Landlocked Countries | 0 | - | 4.99 | 145,743 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,191 |
| Countries with the Most Species | 0 | - | 4.99 | 95,238 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,329 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,365 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,952 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,571 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,945 |
| Countries in the Alps | 0 | - | 4.86 | 116,810 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,554 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,245 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,997 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,413 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,153 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,993 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,564 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,743 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,257 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,044 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,193 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,039 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,449 |
