| Biggest Cities in the World | 0 | - | 4.92 | 790,967 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,168 |
| Biggest City by Time Zone | 0 | - | 4.88 | 66,717 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,770 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 222,114 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,958 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 130,221 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,558 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,571 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,868 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,662 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,097 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,214 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,792 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 66,752 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,611 |
| Biggest Cities in the United States | 0 | - | 4.93 | 967,489 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,986 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,612 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,922 |
| Largest City by Island | 0 | - | 4.87 | 71,095 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,424 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,615 |
| Biggest European Cities by Century | 0 | - | 4.99 | 144,135 |
| Megacities on a World Map | 0 | - | 4.98 | 251,157 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,578 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,838 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,919 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,887 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,230 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,718 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,124 |
| Biggest World Cities A-Z | 0 | - | 4.63 | 221,451 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,603 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,287 |
| Countries that Start with A | 0 | - | 4.97 | 2,147,942 |
| Countries that Start with B | 0 | - | 4.95 | 2,280,775 |
| Countries that Start with C | 0 | - | 4.96 | 1,811,079 |
| Countries that Start with D | 0 | - | 4.96 | 702,079 |
| Countries that Start with E | 0 | - | 4.95 | 1,368,132 |
| Countries that Start with G | 0 | - | 4.97 | 1,493,496 |
| Countries that Start with H | 0 | - | 4.96 | 598,393 |
| Countries that Start with I | 0 | - | 4.92 | 1,280,777 |
| Countries that Start with J | 0 | - | 4.98 | 596,453 |
| Countries that Start with K | 0 | - | 4.97 | 809,779 |
| Countries that Start with L | 0 | - | 4.98 | 1,083,352 |
| Countries that Start with N | 0 | - | 4.93 | 1,110,253 |
| Countries that Start with P | 0 | - | 4.94 | 1,209,026 |
| Countries that Start with S | 0 | - | 4.98 | 1,745,215 |
| Countries that Start with T | 0 | - | 4.90 | 1,004,580 |
| Countries that Start with U | 0 | - | 4.97 | 900,204 |
| Countries that Start with V | 0 | - | 4.98 | 605,370 |
| Countries that Start with F | 0 | - | 4.83 | 612,548 |
| Countries that Start with M | 0 | - | 4.97 | 1,373,888 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,103 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,489 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,594 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,578 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,337 |
| Capitals A-Z #1 | 0 | - | 4.86 | 51,143 |
| Asian Geography By Letter - B | 0 | - | 4.85 | 66,034 |
| European Geography By Letter - P #1 | 0 | - | 4.81 | 96,388 |
| European Geography By Letter - B #2 | 0 | - | 4.83 | 76,339 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,527 |
| Countries with Megacities | 0 | - | 4.99 | 247,382 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,345 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,135 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,773 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,052 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,561 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,138 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,615 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,671 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,879 |
| Richest Countries A-Z | 0 | - | 4.92 | 101,934 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,863 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,850 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,964 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,920 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,730 |
| Biggest City by Region | 0 | - | 4.50 | 36,008 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,916 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,344 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,511 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,382 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,031 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,231 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,937 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,782 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,862 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,579 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,577 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,266 |
| Name a World Capital A-Z | 0 | - | 5.00 | 175,055 |
| One Capital by Letter by Continent | 0 | - | 4.98 | 17,016 |
| One Country By Letter By Continent | 0 | - | 5.00 | 121,844 |
| Name a Valid Country A-Z | 0 | - | 4.98 | 120,235 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,944 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,150 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,978 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,541 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,730 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,364 |
| Biggest Cities in Europe | 0 | - | 4.70 | 542,381 |
| Biggest Cities with a Tropical Climate | 0 | - | 4.38 | 31,887 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,741 |
| NATO Countries | 0 | - | 4.98 | 276,137 |
| EU Countries Quiz | 0 | - | 4.99 | 270,209 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,162 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,651 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,176 |
| Countries with the Most Elite Universities | 0 | - | 4.94 | 146,867 |
| Countries with NO Military | 0 | - | 4.97 | 61,229 |
| Countries by Number of Books Published | 0 | - | 4.95 | 71,949 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,445 |
| Biggest Cities in History | 0 | - | 4.52 | 89,165 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,136 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,673 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,392 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,204 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,884 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,208 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,462 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,552 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 116,009 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,652 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,954 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,250 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 126,037 |
| Countries Bordering "U" Countries | 0 | - | 4.82 | 24,097 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,261 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,337 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,676 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,104 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,187 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,427 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 107,030 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,473 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,663 |
| Fastest Growing U.S. Cities | 0 | - | 4.34 | 72,872 |
| Biggest Coastal City by Country | 0 | - | 4.61 | 27,980 |
| Biggest City by Region #2 | 0 | - | 4.43 | 24,676 |
| Biggest Cities by Latitude Range | 0 | - | 4.78 | 27,471 |
| Biggest Cities by Trait #2 | 0 | - | 4.46 | 20,244 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 94,448 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,963 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 97,159 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,087 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,561 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,380 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,342 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,680 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,623 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,874 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,292 |
| Cities with the Biggest Economies | 0 | - | 4.91 | 129,761 |
| Coldest World Capitals | 0 | - | 4.95 | 133,071 |
| Countries with the Most Christians | 0 | - | 4.92 | 141,556 |
| Countries with the Most Tanks | 0 | - | 4.91 | 106,344 |
| Biggest Export Partners For Every Country | 0 | - | 4.98 | 49,788 |
| Top Oil Reserve Countries | 0 | - | 4.93 | 74,191 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,249 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 86,987 |
| Buddhist Countries | 0 | - | 4.96 | 143,011 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 333,035 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,186 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,200 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 122,187 |
| Countries that Start with R | 0 | - | 4.43 | 443,902 |
| World Currency Quiz | 0 | - | 4.92 | 298,781 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,139 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,049 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,979 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,296 |
| Countries Closest to United States A-Z | 0 | - | 4.82 | 117,464 |
| Asian Geography By Letter - A | 0 | - | 4.64 | 70,849 |
| European Geography By Letter - A | 0 | - | 4.56 | 132,448 |
| European Geography By Letter - B #1 | 0 | - | 4.67 | 110,947 |
| European Geography By Letter - C | 0 | - | 4.46 | 111,898 |
| European Geography By Letter - D | 0 | - | 4.50 | 106,754 |
| European Geography By Letter - L | 0 | - | 4.52 | 112,266 |
| European Geography By Letter - M | 0 | - | 4.61 | 128,976 |
| European Geography By Letter - N | 0 | - | 4.44 | 99,711 |
| European Geography By Letter - R | 0 | - | 4.42 | 92,665 |
| European Geography By Letter - V | 0 | - | 4.43 | 92,050 |
| Asian Geography by Letter - H | 0 | - | 4.49 | 65,412 |
| Asian Geography By Letter - M | 0 | - | 4.47 | 61,181 |
| Asian Geography by Letter - P | 0 | - | 4.45 | 57,586 |
| Asian Geography by Letter - T | 0 | - | 4.50 | 57,094 |
| European Geography By Letter - T | 0 | - | 4.41 | 81,355 |
| European Geography By Letter - S #1 | 0 | - | 4.63 | 99,631 |
| Asian Geography By Letter - L | 0 | - | 4.49 | 42,739 |
| Most Populous Islands | 0 | - | 4.79 | 122,027 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,211 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,414 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 231,084 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,105 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,941 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 103,040 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,631 |
