| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,305 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,284 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,614 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,574 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,818 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,226 |
| Countries With More Than 100 Million People | 0 | - | 4.99 | 164,634 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,241 |
| Five Most Populated Countries by Hemisphere | 0 | - | 4.96 | 123,003 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,000 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,600 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,249 |
| Countries with Megacities | 0 | - | 4.99 | 246,948 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,139 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,985 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,555 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,877 |
| Independence from Whom | 0 | - | 4.99 | 209,698 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,759 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,000 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,026 |
| Countries by Founding Story | 0 | - | 4.95 | 76,544 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,435,144 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,659 |
| Biggest Cities in the World | 0 | - | 4.92 | 790,470 |
| Capitals of the Most Populated Countries | 0 | - | 4.96 | 127,123 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,846 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,942 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,891 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,496 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,610 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,275 |
| Biggest City by Time Zone | 0 | - | 4.87 | 66,659 |
| Biggest City in Every Country | 0 | - | 4.98 | 98,696 |
| Five Most Populated Cities by Continent | 0 | - | 4.93 | 221,954 |
| Biggest Cities in the World - Extreme | 0 | - | 4.98 | 108,873 |
| Biggest Cities That Aren't World Capitals | 0 | - | 4.96 | 130,064 |
| Biggest Cities with Exceptions | 0 | - | 4.90 | 78,498 |
| Biggest Cities in the Southern Hemisphere | 0 | - | 4.87 | 83,534 |
| Ten Biggest Cities by Hemisphere | 0 | - | 4.96 | 78,590 |
| Biggest Cities in Deserts | 0 | - | 4.97 | 53,060 |
| Most Populous Cities as a Percent of Their Continent | 0 | - | 4.91 | 69,173 |
| Ten Southernmost Megacities | 0 | - | 4.85 | 56,756 |
| 100 Biggest Cities in the World with Exceptions | 0 | - | 4.98 | 66,693 |
| Biggest Cities in 4 Random Countries on a Map | 0 | - | 4.99 | 128,537 |
| Cities by Former Name | 0 | - | 4.84 | 90,978 |
| Recently Independent Countries | 0 | - | 4.98 | 157,989 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,515 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,182 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,881 |
| Countries by Former Name | 0 | - | 4.99 | 124,297 |
| Historical City to Country | 0 | - | 4.84 | 78,132 |
| 100 Biggest Cities on a World Map | 0 | - | 4.99 | 413,652 |
| Biggest Cities in the United States | 0 | - | 4.93 | 966,738 |
| Biggest Metro Areas in the USA | 0 | - | 4.98 | 363,808 |
| Most Populous Country by First Two Letters | 0 | - | 4.70 | 70,655 |
| Demographics Multiple Choice | 0 | - | 4.69 | 42,090 |
| Countries of Europe by Population | 0 | - | 4.98 | 178,102 |
| Most Populated Countries Bordering the Pacific Ocean | 0 | - | 4.96 | 95,152 |
| Most Populous Countries Bordering Each Other | 0 | - | 4.97 | 129,346 |
| Countries with the Most People Bordering Them | 0 | - | 4.98 | 106,941 |
| Populous Countries Bordering Smaller Countries | 0 | - | 4.97 | 112,412 |
| Densest Countries Bordering Each Other | 0 | - | 4.93 | 89,601 |
| Countries with a Population Under 1 Million by Clue | 0 | - | 4.99 | 92,304 |
| Biggest Spanish-Speaking Cities | 0 | - | 4.91 | 126,490 |
| Biggest Cities by Language | 0 | - | 4.96 | 230,862 |
| Largest City by Island | 0 | - | 4.87 | 71,050 |
| Biggest Cities in Europe in 1700 | 0 | - | 4.92 | 70,395 |
| Most Populous World Capitals | 0 | - | 4.94 | 174,556 |
| Biggest European Cities by Century | 0 | - | 4.98 | 143,632 |
| Megacities on a World Map | 0 | - | 4.98 | 250,986 |
| All 1M Cities by Proximity | 0 | - | 5.00 | 573,311 |
| 2,000 Biggest World Cities Furthest from a Larger City | 0 | - | 4.98 | 66,802 |
| All 3M Cities on the World Map | 0 | - | 4.95 | 73,875 |
| Every 1,000,000+ City on a Map | 0 | - | 4.99 | 112,778 |
| Biggest City in Each U.S. State | 0 | - | 4.85 | 167,158 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 221,484 |
| Former Capitals | 0 | - | 4.88 | 71,146 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,846 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,275 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,464 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,730 |
| Countries of the World in 1444 | 0 | - | 4.98 | 59,533 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,877 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 164,126 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 169,114 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,728 |
| Boundary Waters | 0 | - | 4.92 | 88,045 |
| Countries Along the Afro-Eurasia Coast | 0 | - | 4.85 | 34,818 |
| The Same Suffixes - Geography | 0 | - | 4.98 | 95,292 |
| 100 Geography Questions of Varying Difficulty | 0 | - | 4.93 | 61,307 |
| "Second Best" Geography Edition #2 | 0 | - | 4.87 | 59,845 |
| Most Populous Islands | 0 | - | 4.79 | 121,996 |
| Islands by Largest City #1 | 0 | - | 4.47 | 94,202 |
| Islands by Largest City #2 | 0 | - | 4.74 | 35,407 |
| Top 10 Most Populous European Countries | 0 | - | 4.98 | 230,984 |
| Top 10 Most Populous Asian Countries | 0 | - | 4.96 | 182,010 |
| Top 10 Most Populous African Countries | 0 | - | 4.99 | 191,869 |
| Top 10 Most Densely-Populated Countries in Asia | 0 | - | 4.92 | 102,997 |
| Countries by Population Decrease | 0 | - | 4.45 | 49,613 |
| Top 10 Asian Countries by Population Increase | 0 | - | 4.93 | 107,831 |
| Flags of Countries With More Than 100 Million People | 0 | - | 4.97 | 158,409 |
| Countries Gaining the Most Population by 2070 | 0 | - | 4.63 | 63,850 |
| Five Most Populated Countries on a Multicolored World Map | 0 | - | 4.98 | 73,147 |
| Least Dense Countries Bordering Each Other | 0 | - | 4.85 | 22,938 |
| Biggest US Cities by Decade | 0 | - | 4.95 | 167,049 |
| Biggest Cities in Asia | 0 | - | 4.95 | 115,352 |
| Biggest Cities in Asia - Extreme | 0 | - | 4.92 | 49,570 |
| 100 Biggest Cities in Europe with a Map | 0 | - | 4.97 | 342,074 |
| Megacities on an Empty Map | 0 | - | 4.96 | 102,517 |
| African Cities in the Top 200 Worldwide | 0 | - | 4.95 | 50,301 |
| Ancient City to Country | 0 | - | 4.70 | 107,611 |
| City-States | 0 | - | 4.53 | 37,101 |
| Damaged and Destroyed Cities | 0 | - | 4.44 | 44,481 |
| City Where It Happened #2 | 0 | - | 4.42 | 52,966 |
| Countries by Independence Day | 0 | - | 4.56 | 52,611 |
| Former Countries by Capital | 0 | - | 4.45 | 127,051 |
| Former Countries | 0 | - | 4.75 | 132,711 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,046 |
| Battle to Country | 0 | - | 4.91 | 52,531 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,203 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 148,961 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 70,123 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,923,135 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.74 | 101,683 |
| Biggest Countries by Population - Shape Quiz | 0 | - | 4.91 | 56,957 |
| Second Biggest Cities by Country | 0 | - | 4.43 | 58,917 |
| Biggest Two-Word U.S. Cities | 0 | - | 4.50 | 101,905 |
| Biggest Cities by Trait #1 | 0 | - | 4.50 | 55,708 |
| Biggest City by Region | 0 | - | 4.50 | 35,997 |
| Most Populous 2nd Cities | 0 | - | 4.78 | 56,904 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,539 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,120 |
| 15 Largest Cities in Europe With a Map | 0 | - | 4.98 | 222,487 |
| 15 Largest Cities in Asia With a Map | 0 | - | 4.98 | 135,600 |
| Northernmost Major City by Country | 0 | - | 4.56 | 33,019 |
| Largest World Capitals with Exceptions | 0 | - | 4.63 | 52,222 |
| Two Largest Cities by First Two Letters | 0 | - | 4.53 | 82,922 |
| 250 Biggest Cities in Europe With a Map | 0 | - | 4.91 | 113,804 |
| Ten Northernmost Megacities | 0 | - | 4.50 | 49,260 |
| Most Populous Countries in 1800 | 0 | - | 4.32 | 41,820 |
| Cities Where Famous People Died | 0 | - | 4.47 | 33,017 |
| Landlocked Countries | 0 | - | 4.99 | 413,655 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,898 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 553,097 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,709 |
| Countries of the Mongol Empire on a Map | 0 | - | 4.99 | 105,909 |
| Modern-Day Countries of the British Empire in 1921 | 0 | - | 4.99 | 116,300 |
| World Geography on a Map #1 | 0 | - | 4.94 | 73,162 |
| Geography Tile Select Quiz | 0 | - | 4.98 | 95,007 |
| Countries Losing the Most Population by 2070 | 0 | - | 4.40 | 84,137 |
| Population Trivia | 0 | - | 4.32 | 27,425 |
| Biggest Cities in the U.S. - Extreme | 0 | - | 4.96 | 158,289 |
| 15 Largest Cities in North America With a Map | 0 | - | 4.98 | 46,457 |
| 15 Largest Cities in the Middle East With a Map | 0 | - | 4.92 | 117,301 |
| Biggest Cities in Each U.S. State - Extreme | 0 | - | 4.93 | 78,741 |
| 10 Biggest Cities by U.S. State | 0 | - | 4.95 | 40,799 |
| 500 Biggest U.S. Urban Areas | 0 | - | 4.90 | 115,511 |
| 100 Biggest Cities in North America on a Map | 0 | - | 4.84 | 61,541 |
| Cities by Founder and Date | 0 | - | 4.56 | 29,011 |
| City Where It Happened #1 | 0 | - | 4.24 | 106,131 |
| World Capitals Quiz | 0 | - | 5.00 | 5,031,838 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,605 |
| Himalayan Countries | 0 | - | 4.95 | 135,374 |
| Andean Countries | 0 | - | 4.94 | 82,830 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,222 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,220 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,908 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,613 |
| Danube Countries | 0 | - | 4.97 | 71,083 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,769 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,539 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,492 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,408 |
| European Landlocked Countries | 0 | - | 4.99 | 145,757 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,218 |
| Countries with the Most Species | 0 | - | 4.99 | 95,242 |
| Countries Unconquered since 1850 | 0 | - | 4.32 | 64,645 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,352 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,200 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,370 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,958 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,579 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,953 |
| Countries in the Alps | 0 | - | 4.86 | 116,826 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,569 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,259 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,014 |
| Guerrillas by Country | 0 | - | 4.40 | 40,951 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,425 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,168 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,004 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,582 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,760 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,303 |
| Longest Uninterrupted Democracies | 0 | - | 4.04 | 33,096 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,062 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,196 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,045 |
| Most Recent Country To ... | 0 | - | 4.33 | 55,405 |
