| Independence from Whom | 0 | - | 4.99 | 212,218 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,811 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,537 |
| Countries by Founding Story | 0 | - | 4.95 | 77,413 |
| Landlocked Countries | 0 | - | 4.99 | 422,460 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,620,578 |
| Recently Independent Countries | 0 | - | 4.98 | 159,524 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,322 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,869 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,406 |
| Countries by Former Name | 0 | - | 4.99 | 125,396 |
| Historical City to Country | 0 | - | 4.84 | 78,660 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,760 |
| Himalayan Countries | 0 | - | 4.95 | 138,957 |
| Andean Countries | 0 | - | 4.93 | 84,751 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,961 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,033 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,572 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,902 |
| Danube Countries | 0 | - | 4.97 | 72,079 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,098 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,477 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,420 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,899 |
| European Landlocked Countries | 0 | - | 4.99 | 147,206 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,741 |
| Countries with the Most Species | 0 | - | 4.99 | 103,288 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,857 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,626 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,742 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,579 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,282 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,717 |
| Countries in the Alps | 0 | - | 4.87 | 118,283 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,427 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,141 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,700 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,648 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,571 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,990 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,732 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,553 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,206 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,910 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,684 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,558 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,271 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,524 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,586 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,017 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,355 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,352 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,158 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,190 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,271 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,272 |
| Largest Countries By Category | 0 | - | 4.97 | 158,305 |
| Countries by Countries | 0 | - | 4.96 | 63,300 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,754 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| All Countries by Population With a Map | 0 | - | 4.98 | 109,754 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,072 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,727 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,241 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,915 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,549 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,324 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,946 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,357 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,662 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,437 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,793 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,574 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,706 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,093 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,601 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,963 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,644 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,649 |
| Island Countries | 0 | - | 4.99 | 711,210 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,452 |
| Northernmost Countries | 0 | - | 4.99 | 362,190 |
| Countries of South America | 0 | - | 5.00 | 928,029 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,782 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,791 |
| "Land" Countries | 0 | - | 4.98 | 337,474 |
| Former Countries by Capital | 0 | - | 4.45 | 127,622 |
| Former Countries | 0 | - | 4.75 | 133,959 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,867 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,025 |
| Countries with Megacities | 0 | - | 4.99 | 264,888 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,860 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,542 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,123 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,620 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,943 |
| Countries by Official Language | 0 | - | 4.95 | 195,346 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,506 |
| Countries in their Native Language | 0 | - | 4.99 | 199,136 |
| Subdivisions by Country | 0 | - | 4.87 | 50,449 |
| Megadiverse Countries | 0 | - | 4.96 | 135,056 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,185 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,385 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,264 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,124 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,194 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,066 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,683 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,161 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,769 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,916 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,230 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,992 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,380 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,515 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,326 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,093 |
| Battle to Country | 0 | - | 4.91 | 53,572 |
| World Map Quiz | 0 | - | 4.81 | 65,160 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,535 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,395 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,186 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,950 |
| Countries by Road Signs | 0 | - | 4.98 | 54,055 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,181 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,333 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,038 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,345 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,937 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,053 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,335 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,608 |
| Widest Countries East to West | 0 | - | 4.92 | 129,698 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,468 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,435 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,139 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,799 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,628 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,914 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,390 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,811 |
| Countries with Double Letters | 0 | - | 4.96 | 96,327 |
| Countries that End in N | 0 | - | 4.95 | 171,226 |
| Countries with Five Letters | 0 | - | 4.96 | 282,672 |
| Countries with Six Letters | 0 | - | 4.94 | 213,661 |
| Countries with W | 0 | - | 4.97 | 160,397 |
| Countries with Z | 0 | - | 4.98 | 291,575 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,769 |
| Countries That End in U | 0 | - | 4.95 | 120,882 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,532 |
| Countries that End in O | 0 | - | 4.92 | 159,540 |
| Countries that End in R | 0 | - | 4.87 | 118,983 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,754 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,181 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,740 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,505 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,425 |
| Countries That End in Y | 0 | - | 4.91 | 185,898 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,987 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,907 |
| Countries that End in I | 0 | - | 4.94 | 135,122 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,163 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,844 |
| Countries That End in NIA | 0 | - | 4.92 | 109,817 |
| Countries That End in BIA | 0 | - | 4.93 | 149,245 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,152 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,457 |
| Countries That End in RIA | 0 | - | 4.93 | 126,836 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,047 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,730 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,763 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,190 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,741 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,600 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,063 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,458 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,562 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,452 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,333 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,029 |
| Countries that End in L | 0 | - | 4.94 | 156,871 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,975 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,280 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,051 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,980 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,030 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,827 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,712 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,173 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,888 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,519 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,903 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,121 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,720 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,899 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,952 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,163 |
| One Border Countries | 0 | - | 4.98 | 470,126 |
