| First Countries to Reach 5 Million People | 0 | - | 4.92 | 128,917 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 71,697 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 79,585 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 56,010 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 69,662 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,263 |
| Countries With More Than 100 Million People | 0 | - | 4.98 | 144,814 |
| Most Populous Countries by Year | 0 | - | 4.81 | 100,910 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 115,853 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,344 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,026 |
| Countries with Megacities | 0 | - | 4.99 | 213,725 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 183,993 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,753 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,209 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,455 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 265,782 |
| Independence from Whom | 0 | - | 4.99 | 197,268 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,762 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,754 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,795 |
| Countries by Founding Story | 0 | - | 4.94 | 71,714 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,368,271 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,800 |
| Biggest Cities in the World | 0 | - | 4.91 | 736,406 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 121,461 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 80,755 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 255,161 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 114,600 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 106,919 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 86,866 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,053 |
| Biggest City by Time Zone | 0 | - | 4.85 | 59,956 |
| Biggest City in Every Country | 0 | - | 4.98 | 87,520 |
| Five Most Populated Cities by Continent | 0 | - | 4.94 | 184,596 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 99,893 |
| 10 Biggest Cities That Aren't World Capitals | 0 | - | 4.95 | 107,720 |
| Biggest Cities with Exceptions | 0 | - | 4.89 | 71,488 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.85 | 77,497 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.95 | 71,178 |
| Biggest Cities in Deserts | 0 | - | 4.94 | 44,753 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.90 | 64,064 |
| Ten Southernmost Megacities | 0 | - | 4.82 | 48,466 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.97 | 60,573 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 116,660 |
| Cities by Former Name | 0 | - | 4.84 | 87,049 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,666 |
| Countries of the World in 1900 | 0 | - | 4.87 | 74,026 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 180,825 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 137,493 |
| Countries by Former Name | 0 | - | 4.99 | 118,949 |
| Historical City to Country | 0 | - | 4.83 | 74,930 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 392,642 |
| Biggest Cities in the United States | 0 | - | 4.93 | 895,085 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 348,386 |
| Most Populous Country by First Two Letters | 0 | - | 4.71 | 69,011 |
| Demographics Multiple Choice | 0 | - | 4.68 | 40,987 |
| Countries of Europe by Population | 0 | - | 4.98 | 142,411 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.97 | 81,144 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.96 | 102,322 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 99,359 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.98 | 106,093 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 83,730 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 88,948 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.88 | 113,743 |
| Biggest Cities by Language | 0 | - | 4.95 | 222,059 |
| Largest City by Island | 0 | - | 4.90 | 64,341 |
| Biggest Cities in Europe, 1700 A.D. | 0 | - | 4.94 | 66,987 |
| Most Populous World Capitals | 0 | - | 4.93 | 167,809 |
| Biggest European Cities by Century | 0 | - | 4.98 | 123,855 |
| Megacities on a World Map | 0 | - | 4.98 | 230,452 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 542,618 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 63,312 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 68,274 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 97,782 |
| Biggest City in Each U.S. State | 0 | - | 4.84 | 158,655 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 212,892 |
| Former Capitals Quiz | 0 | - | 4.86 | 68,912 |
| Countries Settled by Vikings | 0 | - | 4.93 | 116,120 |
| Warsaw Pact Countries | 0 | - | 4.82 | 82,166 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.93 | 57,993 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 92,639 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.82 | 52,755 |
| Countries with the Highest Population Density | 0 | - | 4.94 | 158,345 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 162,115 |
| Most Populous Countries in 1950 | 0 | - | 4.53 | 72,628 |
| Boundary Waters | 0 | - | 4.93 | 84,400 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.86 | 32,196 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 79,869 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.92 | 53,035 |
| "Second Best" Geography Edition #2 | 0 | - | 4.85 | 55,410 |
| Most Populous Islands | 0 | - | 4.75 | 117,259 |
| Islands by Largest City #1 | 0 | - | 4.46 | 92,944 |
| Top 10 Most Populous European Countries | 0 | - | 4.97 | 217,553 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 170,841 |
| Top 10 Most Populous African Countries | 0 | - | 4.98 | 167,948 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 97,516 |
| Countries by Population Decrease | 0 | - | 4.46 | 48,146 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 103,786 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 152,152 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.56 | 61,312 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 68,156 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.91 | 18,894 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 160,296 |
| Biggest Cities in Asia | 0 | - | 4.94 | 102,435 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 46,468 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 321,285 |
| Megacities on an Empty Map | 0 | - | 4.95 | 92,064 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.94 | 45,942 |
| Ancient City to Country | 0 | - | 4.71 | 104,341 |
| City-States | 0 | - | 4.54 | 36,043 |
| Damaged and Destroyed Cities | 0 | - | 4.42 | 43,315 |
| City Where It Happened #2 | 0 | - | 4.44 | 51,822 |
| Countries by Independence Day | 0 | - | 4.57 | 45,286 |
| Former Countries by Capital | 0 | - | 4.43 | 107,318 |
| Former Countries | 0 | - | 4.74 | 128,715 |
| Guerrillas by Country | 0 | - | 4.43 | 39,780 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 73,194 |
| Battle to Country | 0 | - | 4.91 | 47,936 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 140,911 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,592,571 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 96,394 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.90 | 53,324 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 99,944 |
| Biggest Cities by Trait #1 | 0 | - | 4.43 | 44,039 |
| Biggest City by Region | 0 | - | 4.49 | 34,761 |
| Most Populous 2nd Cities | 0 | - | 4.75 | 55,297 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.81 | 66,038 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.94 | 70,344 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 210,512 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 127,269 |
| Northernmost Major City by Country | 0 | - | 4.56 | 31,944 |
| Largest World Capitals with Exceptions | 0 | - | 4.64 | 51,314 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 80,324 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 105,630 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 48,197 |
| Most Populous Countries in 1800 | 0 | - | 4.34 | 40,069 |
| Cities Where Famous People Died | 0 | - | 4.43 | 32,219 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 372,995 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 100,145 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.74 | 39,278 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 99,189 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 107,958 |
| World Geography on a Map #1 | 0 | - | 4.93 | 70,170 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 89,544 |
| Islands by Largest City #2 | 0 | - | 4.74 | 28,376 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.39 | 81,693 |
| Population Trivia | 0 | - | 4.34 | 26,861 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.95 | 150,674 |
| Biggest Cities in Germany - Extreme | 0 | - | 4.83 | 45,942 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.97 | 40,628 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 109,706 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.92 | 74,170 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.92 | 33,778 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.89 | 106,459 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 56,921 |
| Cities by Founder and Date | 0 | - | 4.55 | 28,489 |
| City Where It Happened #1 | 0 | - | 4.28 | 104,487 |
| World Capitals Quiz | 0 | - | 5.00 | 4,747,291 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,056 |
| Himalayan Countries | 0 | - | 4.95 | 118,238 |
| Andean Countries | 0 | - | 4.92 | 66,192 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,300 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 54,944 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,112 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,010 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,714 |
| Danube Countries | 0 | - | 4.97 | 59,762 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,437 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,840 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,033 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,017 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,089 |
| European Landlocked Countries | 0 | - | 4.99 | 139,718 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,167 |
| Countries with the Most Species | 0 | - | 4.99 | 91,626 |
| Countries Unconquered since 1850 | 0 | - | 4.36 | 63,495 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,667 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,244 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,378 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,646 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,825 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,260 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,683 |
| Countries in the Alps | 0 | - | 4.86 | 108,519 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,592 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,679 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,555 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,465 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,293 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,017 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 93,879 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 48,988 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,318 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 32,381 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 57,873 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,053 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,660 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,527 |
| Most Recent Country To ... | 0 | - | 4.32 | 53,647 |
