| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 159,869 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,831 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,068 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,293 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 117,877 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,761 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,696,451 |
| Biggest Cities in Asia | 0 | - | 4.95 | 117,915 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,343 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 347,920 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,403 |
| Biggest Cities in the World | 0 | - | 4.92 | 803,837 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,364 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,478 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,188 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 89,468 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 419,886 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.43 | 91,697 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 44,122 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,966 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.44 | 40,493 |
| Biggest Cities in the United States | 0 | - | 4.94 | 984,689 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,544 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,300 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,732 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,665 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 226,871 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,226 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 149,137 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,571 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,098 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,069 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,746 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,483 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,552 |
| Ten Southernmost Megacities | 0 | - | 4.88 | 65,079 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,208 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 131,911 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,412 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 177,427 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,394 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,425 |
| Biggest Cities in Europe | 0 | - | 4.73 | 548,396 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,920 |
| Largest City by Island | 0 | - | 4.87 | 72,291 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,329 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,515 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,008 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,428 |
| Megacities on a World Map | 0 | - | 4.98 | 256,269 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,083 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 581,005 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,663 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,487 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,248 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 115,835 |
| Biggest Cities in Germany | 0 | - | 4.95 | 294,760 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,729 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,443 |
| U.S. Cities by Hispanic Population | 0 | - | 4.32 | 38,493 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.88 | 97,010 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,451 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,387 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,722 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,883 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 94,095 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,835 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,026 |
| US States Quiz | 0 | - | 5.00 | 16,963,572 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,761 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,781 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,633 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,697 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,439 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.70 | 67,778 |
| Biggest Cities in Canada | 0 | - | 4.54 | 133,331 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 368,277 |
| Biggest English Cities by Century | 0 | - | 4.91 | 106,625 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,243 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,908 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 94,640 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 82,342 |
| Total United States Immigration by Country | 0 | - | 4.91 | 112,173 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 245,830 |
| Mexico States Map Quiz | 0 | - | 4.84 | 105,445 |
| Name the U.S. National Parks | 0 | - | 4.86 | 60,340 |
| States of Mexico | 0 | - | 4.96 | 177,665 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 334,590 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,774 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,874 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,621 |
| Countries with Megacities | 0 | - | 4.99 | 266,119 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,370 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,818 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,652 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,942 |
| Biggest Cities Once in the Roman Empire | 0 | - | 4.81 | 76,020 |
| Most-Visited Countries by Americans | 0 | - | 4.86 | 110,286 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 92,254 |
| Most-Visited Countries by Canadians | 0 | - | 4.83 | 39,544 |
| Countries Closest to Canada | 0 | - | 4.91 | 198,888 |
| Mexico Cities Map Quiz | 0 | - | 4.83 | 38,768 |
| Pixelated United States Map | 0 | - | 4.88 | 94,659 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 118,813 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 112,035 |
| 10 Southernmost U.S. States | 0 | - | 4.89 | 114,049 |
| U.S. States with Short Names | 0 | - | 4.91 | 149,701 |
| U.S. States that Start with M | 0 | - | 4.93 | 188,058 |
| U.S. States By Population | 0 | - | 4.92 | 153,973 |
| U.S. States that Start with N | 0 | - | 4.95 | 172,007 |
| U.S. States with Longest Names | 0 | - | 4.84 | 44,766 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 88,730 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 64,451 |
| The Only Remaining U.S. State . . . | 0 | - | 4.93 | 65,962 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 59,965 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,614 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,938 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,110 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.56 | 65,547 |
| Biggest City by Region | 0 | - | 4.50 | 36,345 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,276 |
| Biggest Cities by Latitude Range | 0 | - | 4.80 | 32,101 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 47,059 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,277 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,416 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,482 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,523 |
| Biggest Cities in Australia on a Map | 0 | - | 4.62 | 38,128 |
| Canadian Metro Areas over 100,000 People | 0 | - | 4.47 | 31,340 |
| Most Guessed U.S. Cities | 0 | - | 4.89 | 106,759 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 73,230 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 95,503 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 48,253 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 146,986 |
| Countries that Beat the United States | 0 | - | 4.93 | 168,345 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 102,293 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,333 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 82,928 |
| US States with an Empty Map | 0 | - | 5.00 | 627,535 |
| U.S. States or European Countries by Area | 0 | - | 4.95 | 96,798 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 49,125 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 133,911 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,157 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,684 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,483 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 76,287 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,768 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,034 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,445 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,581 |
| Biggest Cities in History | 0 | - | 4.52 | 90,471 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,771 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.94 | 84,794 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.46 | 73,283 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,991 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,691 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,559 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.61 | 44,476 |
| Largest Nordic Cities on a Map | 0 | - | 4.78 | 37,315 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,638 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 32,321 |
| Biggest Urban Areas in the UK | 0 | - | 4.43 | 176,610 |
| Biggest Cities in Japan | 0 | - | 4.68 | 83,403 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,689 |
| Biggest Cities in France | 0 | - | 4.70 | 224,968 |
| Biggest Cities in Spain | 0 | - | 4.64 | 171,895 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 56,200 |
| Biggest Cities in Poland | 0 | - | 4.62 | 54,191 |
| Biggest Cities in the UK | 0 | - | 4.48 | 105,671 |
| Biggest Cities in China | 0 | - | 4.53 | 159,564 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 47,401 |
| Biggest Cities in India | 0 | - | 4.64 | 67,983 |
| Biggest Cities in Italy | 0 | - | 4.77 | 242,054 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 124,995 |
| Biggest Cities Starting With D | 0 | - | 4.52 | 117,051 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 109,840 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 123,436 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 143,904 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 127,565 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 149,880 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 210,200 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 125,695 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 126,316 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 92,665 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.83 | 62,144 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,403 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,177 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,831 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,101 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,470 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,594 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,729 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,111 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,588 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,736 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,418 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,097 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,439 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,760 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,622 |
