| Independence from Whom | 0 | - | 4.99 | 209,610 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,694 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,981 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,866 |
| Countries by Founding Story | 0 | - | 4.95 | 76,499 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,896,051 |
| Recently Independent Countries | 0 | - | 4.98 | 157,948 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,444 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,072 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,777 |
| Countries by Former Name | 0 | - | 4.99 | 124,248 |
| Historical City to Country | 0 | - | 4.84 | 78,114 |
| Landlocked Countries | 0 | - | 4.99 | 413,326 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,159 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,245 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,226 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,570 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,533 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,771 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,168 |
| Former Capitals | 0 | - | 4.88 | 71,129 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,821 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,263 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,287 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,682 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,714,085 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,456 |
| Himalayan Countries | 0 | - | 4.95 | 135,244 |
| Andean Countries | 0 | - | 4.94 | 82,767 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,180 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,120 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,850 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,556 |
| Countries in World War I | 0 | - | 4.88 | 226,556 |
| Danube Countries | 0 | - | 4.97 | 71,053 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,717 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,507 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,405 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,332 |
| European Landlocked Countries | 0 | - | 4.99 | 145,721 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,156 |
| Countries with the Most Species | 0 | - | 4.99 | 95,229 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 227,359 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,295 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,192 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,357 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,941 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,553 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,923 |
| Countries in the Alps | 0 | - | 4.86 | 116,772 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,529 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,196 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,986 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,393 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,972 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,537 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,728 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,138 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,027 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,185 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,026 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,421 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,715 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,726 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,006 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,616 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,240 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,739 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,114 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,545 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,577 |
| Largest Countries By Category | 0 | - | 4.97 | 156,705 |
| Countries by Countries | 0 | - | 4.96 | 62,232 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,331 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,953 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,318 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,728 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,503 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,026 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,653 |
| Island Countries | 0 | - | 4.99 | 707,499 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,085 |
| Northernmost Countries | 0 | - | 4.99 | 357,561 |
| Countries of South America | 0 | - | 5.00 | 914,222 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,827 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,281 |
| "Land" Countries | 0 | - | 4.98 | 333,561 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,559 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,511 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,996 |
| Battle to Country | 0 | - | 4.91 | 52,494 |
| Countries by Independence Day | 0 | - | 4.56 | 52,596 |
| Former Countries by Capital | 0 | - | 4.45 | 127,028 |
| Former Countries | 0 | - | 4.75 | 132,667 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,008 |
| Countries with Megacities | 0 | - | 4.99 | 246,557 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,708 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,932 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,811 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,377 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,761 |
| Countries by Official Language | 0 | - | 4.95 | 192,710 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,043 |
| Countries in their Native Language | 0 | - | 4.99 | 196,568 |
| Subdivisions by Country | 0 | - | 4.86 | 50,052 |
| Megadiverse Countries | 0 | - | 4.97 | 133,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,741 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,904 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,408 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,614 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,735 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,123 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,204 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,734 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,510 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,400 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,476 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,486 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,646 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,005 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,506 |
| World Map Quiz | 0 | - | 4.81 | 63,461 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,498 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,294 |
| Communist Countries in History | 0 | - | 4.63 | 492,376 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,275 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,947 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,909 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,651 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,824 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,031 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,241 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,926 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,313 |
| Widest Countries East to West | 0 | - | 4.92 | 128,580 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,210 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,169 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,554 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,670 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,598 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,015 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,047 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,569 |
| Countries with Double Letters | 0 | - | 4.97 | 93,317 |
| Countries that End in N | 0 | - | 4.94 | 156,398 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,610 |
| Countries with Six Letters | 0 | - | 4.93 | 210,288 |
| Countries with W | 0 | - | 4.97 | 158,182 |
| Countries with Z | 0 | - | 4.98 | 287,798 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,503 |
| Countries That End in U | 0 | - | 4.95 | 119,490 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,483 |
| Countries that End in O | 0 | - | 4.92 | 158,530 |
| Countries that End in R | 0 | - | 4.87 | 118,249 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,848 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,956 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,284 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,458 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,974 |
| Countries That End in Y | 0 | - | 4.90 | 185,184 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,317 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,634 |
| Countries that End in I | 0 | - | 4.94 | 134,381 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,131 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,175 |
| Countries That End in NIA | 0 | - | 4.92 | 108,975 |
| Countries That End in BIA | 0 | - | 4.92 | 147,679 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,028 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,452 |
| Countries That End in RIA | 0 | - | 4.93 | 126,058 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,976 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,125 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,488 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,869 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,328 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,915 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,089 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,616 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,466 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,804 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,091 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,776 |
| Countries that End in L | 0 | - | 4.94 | 155,696 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,011 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,977 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,496 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,269 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,407 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,721 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,042 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,890 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,142 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,333 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,487 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,597 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,161 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,411 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,299 |
