| Independence from Whom | 0 | - | 4.99 | 211,579 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,879 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,447 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,120 |
| Countries by Founding Story | 0 | - | 4.95 | 77,155 |
| Recently Independent Countries | 0 | - | 4.98 | 159,163 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,793 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,082 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,693 |
| Countries by Former Name | 0 | - | 4.99 | 125,046 |
| Historical City to Country | 0 | - | 4.84 | 78,497 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,412,165 |
| Landlocked Countries | 0 | - | 4.99 | 419,883 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,763,518 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,538 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,209 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,158 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,685 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,223 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,515 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,186 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,413 |
| Himalayan Countries | 0 | - | 4.95 | 137,848 |
| Andean Countries | 0 | - | 4.95 | 84,136 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,356 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,919 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,996 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,464 |
| Danube Countries | 0 | - | 4.97 | 71,758 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,692 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,155 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,841 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,919 |
| European Landlocked Countries | 0 | - | 4.99 | 146,886 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,265 |
| Countries with the Most Species | 0 | - | 4.99 | 103,028 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,429 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,379 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,463 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,635 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,387 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,064 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,460 |
| Countries in the Alps | 0 | - | 4.87 | 117,863 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,752 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,583 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,484 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,368 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,227 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,793 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,392 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,271 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,035 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,641 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,532 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,383 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,004 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,288 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,304 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,412 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,129 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,636 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,693 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,856 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,495 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,055 |
| Largest Countries By Category | 0 | - | 4.97 | 157,815 |
| Countries by Countries | 0 | - | 4.97 | 62,943 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,367 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,489 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,186 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,046 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,495 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,659 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,404 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,876 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,741 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,442 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,828 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,868 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,888 |
| Island Countries | 0 | - | 4.99 | 710,158 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,047,147 |
| Northernmost Countries | 0 | - | 4.99 | 360,952 |
| Countries of South America | 0 | - | 5.00 | 924,278 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,051 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,905 |
| "Land" Countries | 0 | - | 4.98 | 336,042 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,687 |
| Countries by Independence Day | 0 | - | 4.61 | 52,727 |
| Former Countries by Capital | 0 | - | 4.45 | 127,436 |
| Former Countries | 0 | - | 4.75 | 133,744 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,378,095 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,796 |
| Battle to Country | 0 | - | 4.91 | 53,270 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,722 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,307 |
| Countries with Megacities | 0 | - | 4.99 | 262,708 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,144 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,145 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,446 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,192 |
| Countries by Official Language | 0 | - | 4.95 | 194,829 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,790 |
| Countries in their Native Language | 0 | - | 4.99 | 198,375 |
| Subdivisions by Country | 0 | - | 4.86 | 50,334 |
| Megadiverse Countries | 0 | - | 4.96 | 134,837 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,701 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,227 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,804 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,044 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,841 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,902 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,535 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,024 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,232 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,770 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,054 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,838 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,218 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,385 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,490 |
| World Map Quiz | 0 | - | 4.81 | 64,769 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,074 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,138 |
| Countries by Road Signs | 0 | - | 4.98 | 53,750 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,684 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,039 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,768 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,629 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,638 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,782 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,916 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,330 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,372 |
| Widest Countries East to West | 0 | - | 4.92 | 129,454 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,407 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,091 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,036 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,595 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,337 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,654 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,286 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,748 |
| Countries with Double Letters | 0 | - | 4.97 | 95,293 |
| Countries that End in N | 0 | - | 4.95 | 170,306 |
| Countries with Five Letters | 0 | - | 4.96 | 281,087 |
| Countries with Six Letters | 0 | - | 4.94 | 212,728 |
| Countries with W | 0 | - | 4.97 | 159,653 |
| Countries with Z | 0 | - | 4.98 | 290,520 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,906 |
| Countries That End in U | 0 | - | 4.95 | 120,486 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,919 |
| Countries that End in O | 0 | - | 4.92 | 159,264 |
| Countries that End in R | 0 | - | 4.87 | 118,780 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,553 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,520 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,275 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,176 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,787 |
| Countries That End in Y | 0 | - | 4.91 | 185,694 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,453 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,545 |
| Countries that End in I | 0 | - | 4.94 | 134,924 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,653 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,638 |
| Countries That End in NIA | 0 | - | 4.92 | 109,585 |
| Countries That End in BIA | 0 | - | 4.93 | 148,934 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,837 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,161 |
| Countries That End in RIA | 0 | - | 4.93 | 126,601 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,740 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,968 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,354 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,739 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,269 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,392 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,753 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,335 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,246 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,252 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,938 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,663 |
| Countries that End in L | 0 | - | 4.94 | 156,619 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,523 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,175 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,893 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,790 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,842 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,975 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,323 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,746 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,257 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,756 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,657 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,999 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,625 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,738 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,795 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,113 |
