| Independence from Whom | 0 | - | 4.99 | 210,132 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,047 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,120 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,319 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,474 |
| Recently Independent Countries | 0 | - | 4.98 | 158,199 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,850 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,668 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,392 |
| Countries by Former Name | 0 | - | 4.99 | 124,510 |
| Historical City to Country | 0 | - | 4.84 | 78,235 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,051,015 |
| Landlocked Countries | 0 | - | 4.99 | 415,291 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,571 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,530 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,429 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,793 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,695 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,948 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,409 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,991 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,319 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,966 |
| Political Movements by Country | 0 | - | 4.46 | 72,339 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,730,241 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,062 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,778 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,261 |
| Himalayan Countries | 0 | - | 4.95 | 135,951 |
| Andean Countries | 0 | - | 4.94 | 83,160 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,479 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,615 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,177 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,823 |
| Danube Countries | 0 | - | 4.97 | 71,259 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,988 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,706 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,845 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,785 |
| European Landlocked Countries | 0 | - | 4.99 | 145,954 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,506 |
| Countries with the Most Species | 0 | - | 4.99 | 95,341 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,636 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,267 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,439 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,062 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,711 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,068 |
| Countries in the Alps | 0 | - | 4.86 | 117,110 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,753 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,579 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,156 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,580 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,372 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,131 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,792 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,892 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,682 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,203 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,272 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,137 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,610 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,875 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,888 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,446 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,794 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,348 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,014 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,219 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,170 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,724 |
| Largest Countries By Category | 0 | - | 4.97 | 157,014 |
| Countries by Countries | 0 | - | 4.96 | 62,434 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,274 |
| Battle to Country | 0 | - | 4.91 | 52,682 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,021 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,931 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,359 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,748 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,766 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,733 |
| Island Countries | 0 | - | 4.99 | 708,299 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,699 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,847 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,606 |
| Northernmost Countries | 0 | - | 4.99 | 358,656 |
| Countries of South America | 0 | - | 5.00 | 917,690 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,030 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,050 |
| "Land" Countries | 0 | - | 4.98 | 334,082 |
| Countries by Independence Day | 0 | - | 4.56 | 52,640 |
| Former Countries by Capital | 0 | - | 4.45 | 127,167 |
| Former Countries | 0 | - | 4.75 | 132,857 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,235 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,507 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,019 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,655 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,567 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 115,699 |
| Communist Countries in History | 0 | - | 4.63 | 493,312 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,809 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,337 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,883 |
| Countries with Megacities | 0 | - | 4.99 | 248,131 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,767 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,345 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,153 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,287 |
| Countries by Official Language | 0 | - | 4.95 | 193,165 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,685 |
| Countries in their Native Language | 0 | - | 4.99 | 196,994 |
| Subdivisions by Country | 0 | - | 4.86 | 50,146 |
| Megadiverse Countries | 0 | - | 4.97 | 134,415 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,163 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,008 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,536 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,903 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,875 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,441 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,297 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,785 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,906 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,516 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,619 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,580 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,792 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,118 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,117 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,579 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,770 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,515 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,231 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,302 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,105 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,305 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,496 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,073 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,524 |
| Widest Countries East to West | 0 | - | 4.92 | 129,021 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,283 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,476 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,648 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,859 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,817 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,224 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,613 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,641 |
| Countries with Double Letters | 0 | - | 4.96 | 93,674 |
| Countries that End in N | 0 | - | 4.94 | 157,136 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,024 |
| Countries with Six Letters | 0 | - | 4.93 | 210,684 |
| Countries with W | 0 | - | 4.97 | 158,417 |
| Countries with Z | 0 | - | 4.98 | 288,234 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,752 |
| Countries That End in U | 0 | - | 4.95 | 119,611 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,869 |
| Countries that End in O | 0 | - | 4.92 | 158,657 |
| Countries that End in R | 0 | - | 4.87 | 118,376 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,934 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,406 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,556 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,647 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,197 |
| Countries That End in Y | 0 | - | 4.90 | 185,285 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,617 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,896 |
| Countries that End in I | 0 | - | 4.94 | 134,542 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,468 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,299 |
| Countries That End in NIA | 0 | - | 4.92 | 109,118 |
| Countries That End in BIA | 0 | - | 4.92 | 147,850 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,258 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,635 |
| Countries That End in RIA | 0 | - | 4.93 | 126,197 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,183 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,713 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,683 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,032 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,582 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,026 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,282 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,795 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,682 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,896 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,992 |
| Countries that End in L | 0 | - | 4.94 | 156,155 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,122 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,021 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,623 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,454 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,526 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,965 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,624 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,697 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,644 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,023 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,920 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,817 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,244 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,466 |
