| Countries With No Rivers | 0 | - | 4.96 | 77,103 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,969 |
| Capital Cities by Body of Water | 0 | - | 4.85 | 57,838 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,928 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,979 |
| African Great Lakes | 0 | - | 4.82 | 66,923 |
| American Countries With No Atlantic Coastline | 0 | - | 4.93 | 92,776 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,026 |
| Countries with Fjords | 0 | - | 4.94 | 101,289 |
| Top 10 American Countries by Coastline | 0 | - | 4.96 | 88,592 |
| 100 Longest Rivers in Europe - with a Map | 0 | - | 4.94 | 65,899 |
| Nile River Basin Countries on a Map | 0 | - | 4.95 | 50,928 |
| Countries Bordering the Four Color Seas | 0 | - | 4.92 | 23,241 |
| Capitals by River | 0 | - | 4.55 | 48,384 |
| Name a Valid Country Bordering Each Sea | 0 | - | 4.91 | 116,376 |
| 10 Longest Rivers in the United States | 0 | - | 4.85 | 39,375 |
| Countries with the Longest Coastline Bordering Each Other | 0 | - | 4.88 | 29,331 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 166,911 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.97 | 124,938 |
| Biggest City by River | 0 | - | 4.38 | 52,952 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,157 |
| North Sea Countries | 0 | - | 4.92 | 87,674 |
| Black Sea Countries | 0 | - | 4.87 | 60,728 |
| Countries That Touch the Red Sea | 0 | - | 4.91 | 65,567 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,663 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,362 |
| Countries with the Longest Coastlines | 0 | - | 4.80 | 414,034 |
| Rivers of the United States | 0 | - | 4.93 | 66,629 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,016 |
| Cities on a Map of the Great Lakes | 0 | - | 4.41 | 44,714 |
| Bodies of Water around the Arabian Peninsula | 0 | - | 4.74 | 36,188 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,387 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,304 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,008 |
| Countries with Megacities | 0 | - | 4.99 | 266,843 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,729 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,036 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,041 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,162 |
| Biggest Cities in the World | 0 | - | 4.91 | 805,054 |
| Megadiverse Countries | 0 | - | 4.96 | 135,249 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,621 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 128,395 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,284 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,945 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,609 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,865 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,172 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,562 |
| Biggest City by Time Zone | 0 | - | 4.88 | 68,887 |
| Biggest City in Every Country | 0 | - | 4.98 | 101,870 |
| Five Most Populated Cities by Continent | 0 | - | 4.92 | 227,244 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 111,395 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.94 | 149,759 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 80,722 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 85,207 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 420,418 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 80,910 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 60,581 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.92 | 70,659 |
| Ten Southernmost Megacities | 0 | - | 4.88 | 65,173 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 68,352 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 132,197 |
| Biggest Cities in the United States | 0 | - | 4.94 | 986,356 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 367,893 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,216 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,498 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,506 |
| African Great Lake Countries with an Empty Map | 0 | - | 4.97 | 60,933 |
| African Physical Geography | 0 | - | 4.51 | 31,812 |
| Asian Physical Geography | 0 | - | 4.61 | 35,617 |
| Countries of Europe by Population | 0 | - | 4.98 | 182,787 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,340 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 71,006 |
| Demographics Multiple Choice | 0 | - | 4.70 | 42,377 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 95,885 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 131,278 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 108,609 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 113,714 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 90,845 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 93,179 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 129,520 |
| Biggest Cities by Language | 0 | - | 4.96 | 247,581 |
| Largest City by Island | 0 | - | 4.87 | 72,406 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.93 | 71,396 |
| Most Populous World Capitals | 0 | - | 4.94 | 176,637 |
| Biggest European Cities by Century | 0 | - | 4.99 | 146,108 |
| Megacities on a World Map | 0 | - | 4.98 | 256,725 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 581,681 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 67,739 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 75,611 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 116,140 |
| Biggest City in Each U.S. State | 0 | - | 4.87 | 169,601 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,744 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,840 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,492 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,165 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,493 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,841 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,727 |
| U.S. Cities with Landforms in The Name | 0 | - | 4.27 | 70,847 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,601 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,863 |
| Landforms by Country | 0 | - | 4.52 | 52,012 |
| Countries with the Most Sheep | 0 | - | 4.93 | 103,612 |
| Mekong River Countries Empty Map Quiz | 0 | - | 4.80 | 53,445 |
| Seas of Europe | 0 | - | 4.37 | 84,890 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 234,305 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.97 | 184,936 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 194,626 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 104,821 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 108,811 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.98 | 159,941 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 74,521 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 168,946 |
| Biggest Cities in Asia | 0 | - | 4.95 | 118,074 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 50,398 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 348,457 |
| Megacities on an Empty Map | 0 | - | 4.97 | 119,140 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 51,482 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,205 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 113,093 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,533 |
| Rivers A-Z | 0 | - | 4.35 | 32,848 |
| World's Longest Rivers on a Map | 0 | - | 4.90 | 88,288 |
| Rivers of Europe Quiz | 0 | - | 4.89 | 56,820 |
| Sea in the Answers | 0 | - | 4.08 | 49,141 |
| Most Populous Islands | 0 | - | 4.80 | 123,282 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,377 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,639 |
| Countries by Population Decrease | 0 | - | 4.46 | 49,969 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 64,467 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.86 | 23,780 |
| Geological Extremes | 0 | - | 4.34 | 40,101 |
| European Physical Geography | 0 | - | 4.26 | 33,588 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,857 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 57,770 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.84 | 69,288 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,955 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 225,640 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 137,649 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 116,377 |
| Largest Lakes in the United States on a Map | 0 | - | 4.90 | 30,145 |
| Boundary Waters | 0 | - | 4.92 | 88,743 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.87 | 35,397 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 96,649 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 63,275 |
| "Second Best" Geography Edition #2 | 0 | - | 4.88 | 60,924 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.77 | 116,098 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 60,058 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 102,642 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 56,140 |
| Biggest City by Region | 0 | - | 4.50 | 36,385 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 57,321 |
| Biggest Cities by Latitude Range | 0 | - | 4.81 | 32,659 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 160,017 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 47,979 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 119,231 |
| Northernmost Major City by Country | 0 | - | 4.57 | 33,300 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 52,434 |
| Two Largest Cities by First Two Letters | 0 | - | 4.52 | 83,534 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.91 | 84,472 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 42,405 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 118,096 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 62,870 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,560 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,841,445 |
| Landlocked Countries | 0 | - | 4.99 | 425,166 |
| Countries That Touch the Adriatic Sea | 0 | - | 4.96 | 71,326 |
| Countries with the Most Wild Elephants | 0 | - | 4.64 | 55,150 |
| Animal Populations of Countries | 0 | - | 4.52 | 44,043 |
| Top 10 European Countries by Coastline | 0 | - | 4.88 | 138,696 |
| Top 10 Asian Countries by Coastline | 0 | - | 4.92 | 96,668 |
| Top 15 Countries with the Most Cows | 0 | - | 4.74 | 107,476 |
| Oceania Physical Geography | 0 | - | 4.30 | 12,727 |
| South American Physical Geography | 0 | - | 4.58 | 18,399 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,902 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 96,364 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,742 |
| Population Trivia | 0 | - | 4.32 | 27,559 |
| Top 10 Least Populous U.S. States | 0 | - | 4.94 | 192,551 |
| Top 10 Most Populous U.S. States | 0 | - | 4.97 | 177,916 |
| Biggest English-Speaking Cities | 0 | - | 4.45 | 165,779 |
| Biggest Cities in Europe | 0 | - | 4.73 | 548,920 |
| Biggest Cities in History | 0 | - | 4.52 | 90,556 |
| Top 10 World Cities Through History | 0 | - | 4.43 | 78,932 |
| Biggest Cities once in the Spanish Empire | 0 | - | 4.87 | 56,497 |
| 15 Largest Cities in South America With a Map | 0 | - | 4.95 | 127,360 |
| Biggest World Cities within 1,000 Km | 0 | - | 4.54 | 43,600 |
| Biggest Cities in France - Extreme | 0 | - | 4.87 | 57,379 |
| Biggest World Cities in 1850 | 0 | - | 4.61 | 68,682 |
| Biggest Cities in Germany | 0 | - | 4.95 | 295,081 |
| 100 Biggest Cities in Italy on a Map | 0 | - | 4.89 | 97,278 |
| All Cities in China with Population of 1 Million | 0 | - | 4.82 | 46,524 |
| Cities of China (With Some Help) | 0 | - | 4.91 | 31,765 |
| Biggest Cities in Sweden | 0 | - | 4.85 | 41,434 |
| 100 Biggest Cities in Germany on a Map | 0 | - | 4.92 | 99,953 |
| All Cities in India with Population of 1 Million | 0 | - | 4.84 | 47,983 |
| Five Biggest Cities by Country - Extreme | 0 | - | 4.96 | 42,205 |
| Biggest Cities Starting With A | 0 | - | 4.62 | 125,111 |
