| Independence from Whom | 0 | - | 4.99 | 212,692 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,172 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,733 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,853 |
| Countries by Founding Story | 0 | - | 4.95 | 77,636 |
| Landlocked Countries | 0 | - | 4.99 | 424,220 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,763,018 |
| Recently Independent Countries | 0 | - | 4.98 | 159,761 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,687 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,374 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,820 |
| Countries by Former Name | 0 | - | 4.99 | 125,630 |
| Historical City to Country | 0 | - | 4.85 | 78,795 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,515 |
| Himalayan Countries | 0 | - | 4.94 | 139,676 |
| Andean Countries | 0 | - | 4.94 | 85,135 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,317 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,560 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,891 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,171 |
| Danube Countries | 0 | - | 4.97 | 72,248 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,380 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,680 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,803 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,290 |
| European Landlocked Countries | 0 | - | 4.99 | 147,428 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,040 |
| Countries with the Most Species | 0 | - | 4.99 | 103,454 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,174 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,700 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,810 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,723 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,453 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,876 |
| Countries in the Alps | 0 | - | 4.87 | 118,538 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,217 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,550 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,842 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,852 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,776 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,115 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,963 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,706 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,327 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,041 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,780 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,644 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,422 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,663 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,749 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,447 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,497 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,446 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,447 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,096 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,773 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,410 |
| Largest Countries By Category | 0 | - | 4.97 | 158,600 |
| Countries by Countries | 0 | - | 4.96 | 63,481 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,052 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,358 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,637 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,428 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,244 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,953 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,691 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,191 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,746 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,424 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,105 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,442 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,774 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,631 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,943 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,633 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,104 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,378 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,772 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,749 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,230 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,777 |
| Island Countries | 0 | - | 4.99 | 711,956 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,976 |
| Northernmost Countries | 0 | - | 4.99 | 363,297 |
| Countries of South America | 0 | - | 5.00 | 930,532 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,940 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,689 |
| "Land" Countries | 0 | - | 4.98 | 337,997 |
| Former Countries by Capital | 0 | - | 4.45 | 127,737 |
| Former Countries | 0 | - | 4.77 | 134,100 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,086 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,699 |
| Countries with Megacities | 0 | - | 4.99 | 266,203 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,431 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,850 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,720 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,965 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,118 |
| Countries by Official Language | 0 | - | 4.95 | 195,738 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,239 |
| Countries in their Native Language | 0 | - | 4.99 | 199,505 |
| Subdivisions by Country | 0 | - | 4.87 | 50,550 |
| Megadiverse Countries | 0 | - | 4.96 | 135,178 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,716 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,471 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,369 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,175 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,413 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,494 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,767 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,218 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,146 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,294 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,360 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,077 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,498 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,615 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,952 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,342 |
| Battle to Country | 0 | - | 4.91 | 53,773 |
| World Map Quiz | 0 | - | 4.81 | 65,411 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,483 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,556 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,090 |
| Countries by Road Signs | 0 | - | 4.98 | 54,236 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,934 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,907 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,409 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,154 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,263 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,384 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,581 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,611 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,875 |
| Widest Countries East to West | 0 | - | 4.92 | 130,285 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,554 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,075 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,454 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,964 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,838 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,338 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,459 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,860 |
| Countries with Double Letters | 0 | - | 4.96 | 96,759 |
| Countries that End in N | 0 | - | 4.95 | 171,649 |
| Countries with Five Letters | 0 | - | 4.96 | 283,340 |
| Countries with Six Letters | 0 | - | 4.94 | 214,107 |
| Countries with W | 0 | - | 4.96 | 160,713 |
| Countries with Z | 0 | - | 4.98 | 292,073 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,068 |
| Countries That End in U | 0 | - | 4.95 | 121,060 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,867 |
| Countries that End in O | 0 | - | 4.92 | 159,708 |
| Countries that End in R | 0 | - | 4.87 | 119,101 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,847 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,544 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,980 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,694 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,619 |
| Countries That End in Y | 0 | - | 4.91 | 186,016 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,252 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,117 |
| Countries that End in I | 0 | - | 4.94 | 135,240 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,432 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,960 |
| Countries That End in NIA | 0 | - | 4.92 | 109,948 |
| Countries That End in BIA | 0 | - | 4.93 | 149,434 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,374 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,964 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,253 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,199 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,005 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,436 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,991 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,722 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,221 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,503 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,755 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,569 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,556 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,254 |
| Countries that End in L | 0 | - | 4.94 | 157,019 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,896 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,313 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,176 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,111 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,152 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,173 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,971 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,329 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,100 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,791 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,092 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,186 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,771 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,149 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,871 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,916 |
| One Border Countries | 0 | - | 4.98 | 471,203 |
