| Warsaw Pact Countries | 0 | - | 4.83 | 84,720 |
| Independence from Whom | 0 | - | 4.99 | 213,357 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,625 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,913 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,256 |
| Countries by Founding Story | 0 | - | 4.95 | 77,897 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,142 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,025 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,400 |
| Countries by Former Name | 0 | - | 4.99 | 125,951 |
| Historical City to Country | 0 | - | 4.85 | 79,092 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,953,409 |
| Landlocked Countries | 0 | - | 4.99 | 427,061 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,968 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,576 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,991 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,599 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,271 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,565 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,915 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,852 |
| Former Capitals | 0 | - | 4.88 | 71,719 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,828 |
| Himalayan Countries | 0 | - | 4.93 | 140,744 |
| Andean Countries | 0 | - | 4.94 | 85,756 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,877 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,433 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,435 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,652 |
| Danube Countries | 0 | - | 4.97 | 72,524 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,757 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,955 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,397 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,867 |
| European Landlocked Countries | 0 | - | 4.99 | 147,719 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,502 |
| Countries with the Most Species | 0 | - | 4.99 | 103,633 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,606 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,154 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,805 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,940 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,909 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,665 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,116 |
| Countries in the Alps | 0 | - | 4.87 | 118,938 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,935 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,081 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,046 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,150 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,102 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,369 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,563 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,978 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,501 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,294 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,945 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,818 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,658 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,906 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,006 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,105 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,706 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,295 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,813 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,206 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,439 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,598 |
| Largest Countries By Category | 0 | - | 4.97 | 159,052 |
| Countries by Countries | 0 | - | 4.97 | 63,788 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,403 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,441 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,686 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,701 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,727 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,966 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,346 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,533 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,204 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,404 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,992 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,235 |
| Island Countries | 0 | - | 4.99 | 712,925 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,921 |
| Northernmost Countries | 0 | - | 4.99 | 364,491 |
| Countries of South America | 0 | - | 5.00 | 933,985 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,097 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,300 |
| "Land" Countries | 0 | - | 4.98 | 338,910 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,336 |
| Countries by Independence Day | 0 | - | 4.62 | 52,874 |
| Former Countries by Capital | 0 | - | 4.45 | 127,878 |
| Former Countries | 0 | - | 4.77 | 134,307 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,434 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,580 |
| Battle to Country | 0 | - | 4.91 | 54,079 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,276 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,446 |
| Countries with Megacities | 0 | - | 4.99 | 267,734 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,095 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,304 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,430 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,409 |
| Countries by Official Language | 0 | - | 4.95 | 196,175 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,883 |
| Countries in their Native Language | 0 | - | 4.99 | 199,923 |
| Subdivisions by Country | 0 | - | 4.87 | 50,659 |
| Megadiverse Countries | 0 | - | 4.96 | 148,328 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,107 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,788 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,253 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,437 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,616 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,152 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,281 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,727 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,469 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,495 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,205 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,626 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,951 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,673 |
| World Map Quiz | 0 | - | 4.81 | 65,903 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,780 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,785 |
| Countries by Road Signs | 0 | - | 4.98 | 54,430 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,466 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,210 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,680 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,867 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,533 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,641 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,835 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,755 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,919 |
| Widest Countries East to West | 0 | - | 4.92 | 130,824 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,626 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,370 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,551 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,142 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,084 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,594 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,529 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,917 |
| Countries with Double Letters | 0 | - | 4.96 | 97,551 |
| Countries that End in N | 0 | - | 4.95 | 172,576 |
| Countries with Five Letters | 0 | - | 4.96 | 284,553 |
| Countries with Six Letters | 0 | - | 4.94 | 214,893 |
| Countries with W | 0 | - | 4.96 | 161,273 |
| Countries with Z | 0 | - | 4.98 | 292,928 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,634 |
| Countries That End in U | 0 | - | 4.95 | 121,367 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,381 |
| Countries that End in O | 0 | - | 4.92 | 160,352 |
| Countries that End in R | 0 | - | 4.87 | 119,267 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,050 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,101 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,714 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,147 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,650 |
| Countries That End in Y | 0 | - | 4.91 | 186,161 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,172 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,393 |
| Countries that End in I | 0 | - | 4.94 | 135,410 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,189 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,130 |
| Countries That End in NIA | 0 | - | 4.92 | 110,145 |
| Countries That End in BIA | 0 | - | 4.93 | 149,714 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,909 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,882 |
| Countries That End in RIA | 0 | - | 4.93 | 127,131 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,526 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,891 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,354 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,815 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,371 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,903 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,433 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,593 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,031 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,722 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,882 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,578 |
| Countries that End in L | 0 | - | 4.94 | 157,232 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,491 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,374 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,868 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,148 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,529 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,620 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,281 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,509 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,393 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,163 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,310 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,291 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,968 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,871 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,345 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,734 |
