| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,230 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,696 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,739 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,441 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,425 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,505 |
| U.S. State Capitals Quiz | 0 | - | 5.00 | 1,677,221 |
| U.S. Cities With Population > 1 Million | 0 | - | 4.47 | 84,210 |
| U.S. States by Second Most Populous City | 0 | - | 4.42 | 43,687 |
| Biggest "Saint" Cities - United States | 0 | - | 4.46 | 36,607 |
| Fastest Shrinking U.S. Cities | 0 | - | 4.43 | 40,162 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,256 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,552 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 341,900 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,276 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,031 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,403 |
| 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 |
| Every 100k+ City in the United States on a Map | 0 | - | 4.97 | 112,424 |
| U.S. Cities by Hispanic Population | 0 | - | 4.31 | 37,985 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,492 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,201 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,703 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,085 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,605 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,600 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,791 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,805 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 129,923 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,452 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,486 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,246 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,535 |
| 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 | 128,487 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 190,361 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 172,302 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,378 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,807 |
| Biggest Cities in Europe | 0 | - | 4.70 | 541,998 |
| Biggest Cities in Latin America | 0 | - | 4.48 | 64,468 |
| 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 | 174,506 |
| Biggest European Cities by Century | 0 | - | 4.98 | 142,531 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 55,639 |
| Megacities on a World Map | 0 | - | 4.98 | 250,833 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 124,169 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,051 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,773 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,834 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 55,800 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,652 |
| Biggest Cities in Germany | 0 | - | 4.95 | 291,164 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 167,115 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.87 | 94,258 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 40,934 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.91 | 96,979 |
| All Cities in India with Population of 1 Million | 0 | - | 4.83 | 47,038 |
| U.S. States with the Lowest Population Density | 0 | - | 4.92 | 93,592 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 166,972 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,473 |
| The Most Populous U.S. City by Category | 0 | - | 4.36 | 22,255 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,273 |
| US States Quiz | 0 | - | 5.00 | 16,693,892 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,559 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 122,911 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,517 |
| 100 Biggest US Cities in 1900 | 0 | - | 4.45 | 72,744 |
| Biggest U.S. Cities Within 200 Kilometers | 0 | - | 4.41 | 48,463 |
| Biggest U.S. Cities Within 100 Kilometers | 0 | - | 4.42 | 51,227 |
| Biggest Cities in Europe - Extreme | 0 | - | 4.74 | 73,095 |
| Biggest Mediterranean Cities | 0 | - | 4.61 | 91,019 |
| European Cities in the Top 200 Worldwide | 0 | - | 4.56 | 48,883 |
| Cities on Interstate 90 on a Map | 0 | - | 4.45 | 31,921 |
| States of the U.S. in Alphabetical Order | 0 | - | 4.98 | 365,209 |
| Biggest English Cities by Century | 0 | - | 4.90 | 105,580 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,522 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,104 |
| First U.S. Cities to Reach 100,000 People | 0 | - | 4.69 | 59,915 |
| First U.S. States to Reach 1 Million People | 0 | - | 4.69 | 78,905 |
| Most-Visited U.S. Cities | 0 | - | 4.85 | 92,299 |
| Every U.S. Metro Area on a Map | 0 | - | 4.97 | 80,713 |
| Capitals of Canadian Provinces | 0 | - | 4.85 | 88,377 |
| Total United States Immigration by Country | 0 | - | 4.91 | 110,621 |
| "Do Not Travel" Countries for U.S. Citizens | 0 | - | 4.97 | 240,794 |
| Mexico States Map Quiz | 0 | - | 4.84 | 103,758 |
| Name the U.S. National Parks | 0 | - | 4.86 | 58,801 |
| States of Mexico | 0 | - | 4.95 | 173,278 |
| All 3,143 Counties of the United States on a Map | 0 | - | 4.97 | 327,840 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,551 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,495 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,016 |
| Countries with Megacities | 0 | - | 4.99 | 246,576 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,945 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,815 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,386 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,762 |
| Most-Visited Countries by Americans | 0 | - | 4.87 | 108,422 |
| Countries that Visit the United States the Most | 0 | - | 4.96 | 90,817 |
| Countries Closest to Canada | 0 | - | 4.90 | 197,325 |
| Pixelated United States Map | 0 | - | 4.89 | 93,442 |
| The 13 Colonies Quiz | 0 | - | 4.97 | 116,684 |
| U.S. States with the Letter Y | 0 | - | 4.85 | 110,324 |
| 10 Southernmost U.S. States | 0 | - | 4.88 | 112,372 |
| U.S. States with Short Names | 0 | - | 4.91 | 147,614 |
| U.S. States that Start with M | 0 | - | 4.93 | 185,870 |
| U.S. States By Population | 0 | - | 4.92 | 152,328 |
| U.S. States that Start with N | 0 | - | 4.95 | 170,361 |
| U.S. States with Longest Names | 0 | - | 4.84 | 43,837 |
| U.S. States with a Unique First Letter | 0 | - | 4.96 | 87,522 |
| 10 Westernmost U.S. States | 0 | - | 4.95 | 63,747 |
| The Only Remaining U.S. State . . . | 0 | - | 4.92 | 64,859 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,885 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,892 |
| Biggest European Cities by Letter | 0 | - | 4.55 | 126,212 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,680 |
| Biggest Cities in the Commonwealth of Nations | 0 | - | 4.61 | 65,307 |
| Biggest City by Region | 0 | - | 4.50 | 35,990 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,892 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.78 | 46,848 |
| 100 Biggest U.S. Cities on a Map | 0 | - | 4.29 | 114,988 |
| 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 | 82,905 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,248 |
| Biggest Cities in Australia on a Map | 0 | - | 4.61 | 37,540 |
| Biggest Cities in Washington State | 0 | - | 4.43 | 35,933 |
| Biggest Cities in North Carolina | 0 | - | 4.64 | 34,878 |
| Most Guessed U.S. Cities | 0 | - | 4.88 | 104,876 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.83 | 72,048 |
| US State Capitals Quiz - No Hints | 0 | - | 4.98 | 94,511 |
| 10 Westernmost U.S. State Capitals | 0 | - | 4.90 | 47,874 |
| Countries Closest to United States by Continent | 0 | - | 4.99 | 145,373 |
| Countries that Beat the United States | 0 | - | 4.93 | 165,514 |
| Countries that Beat Canada | 0 | - | 4.90 | 86,832 |
| Top 10 Most-Visited U.S. States | 0 | - | 4.90 | 101,069 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 38,792 |
| U.S. States with the Most Immigrants | 0 | - | 4.85 | 81,921 |
| US States with an Empty Map | 0 | - | 5.00 | 618,591 |
| U.S. States or European Countries by Area | 0 | - | 4.94 | 94,664 |
| Louisiana Purchase with a Map | 0 | - | 4.96 | 47,541 |
| U.S. States or European Countries by Population | 0 | - | 4.97 | 131,884 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,784 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,837 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,829 |
| Fastest Growing U.S. States Since 1960 | 0 | - | 4.48 | 75,780 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,447 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,551 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,212 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 151,351 |
| Biggest Cities in History | 0 | - | 4.52 | 89,098 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 72,109 |
| 25 Biggest Cities of the Soviet Union | 0 | - | 4.95 | 83,979 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.53 | 43,178 |
| 100 Biggest Cities in Spain on a Map | 0 | - | 4.59 | 43,406 |
| Largest Nordic Cities on a Map | 0 | - | 4.77 | 36,760 |
| Biggest World Cities in 1850 | 0 | - | 4.62 | 68,184 |
| Biggest Cities in the Blue Banana | 0 | - | 4.56 | 35,990 |
| Biggest Urban Areas in the UK | 0 | - | 4.42 | 175,768 |
| Biggest Cities in Japan | 0 | - | 4.67 | 82,503 |
| Biggest Cities in Russia | 0 | - | 4.49 | 82,009 |
| Biggest Cities in France | 0 | - | 4.69 | 221,969 |
| Biggest Cities in Spain | 0 | - | 4.63 | 169,768 |
| Biggest Cities in The Netherlands | 0 | - | 4.50 | 55,633 |
| Biggest Cities in Poland | 0 | - | 4.62 | 53,429 |
| Biggest Cities in the UK | 0 | - | 4.48 | 104,122 |
| Biggest Cities in China | 0 | - | 4.53 | 156,959 |
| Biggest Cities in Canada | 0 | - | 4.54 | 131,787 |
| Biggest Cities in Switzerland | 0 | - | 4.52 | 46,942 |
| Biggest Cities in India | 0 | - | 4.70 | 67,316 |
| Biggest Cities in Italy | 0 | - | 4.75 | 239,379 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 40,731 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 123,472 |
| Biggest Cities Starting With D | 0 | - | 4.51 | 115,937 |
| Biggest Cities Starting With H | 0 | - | 4.54 | 108,571 |
| Biggest Cities Starting With L | 0 | - | 4.44 | 121,884 |
| Biggest Cities Starting With M | 0 | - | 4.48 | 142,120 |
| Biggest Cities Starting With P | 0 | - | 4.46 | 125,967 |
| U.S. State Capitals Map Quiz | 0 | - | 4.93 | 142,312 |
| Name a Valid U.S. State #1 | 0 | - | 4.93 | 206,613 |
| Top 10 Coldest U.S. States | 0 | - | 4.94 | 123,838 |
| Top 10 Hottest U.S. States | 0 | - | 4.86 | 124,628 |
| Top 10 Most Native American U.S. States | 0 | - | 4.87 | 91,018 |
| Top 10 U.S. States with the Least Precipitation | 0 | - | 4.82 | 61,533 |
| Countries of Europe by Population | 0 | - | 4.98 | 177,948 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,164 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,117 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,271 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,868 |
| 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 | 92,259 |
| Biggest Cities in California | 0 | - | 4.35 | 139,192 |
| Biggest Cities in Florida | 0 | - | 4.23 | 71,782 |
| Biggest Cities in New York State | 0 | - | 4.32 | 59,405 |
