| Independence from Whom | 0 | - | 4.99 | 213,527 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,750 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,954 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,372 |
| Countries by Founding Story | 0 | - | 4.95 | 77,945 |
| Landlocked Countries | 0 | - | 4.99 | 427,678 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,004,136 |
| Recently Independent Countries | 0 | - | 4.98 | 160,577 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,271 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,206 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,601 |
| Countries by Former Name | 0 | - | 4.99 | 126,028 |
| Historical City to Country | 0 | - | 4.85 | 79,121 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,117 |
| Himalayan Countries | 0 | - | 4.93 | 141,006 |
| Andean Countries | 0 | - | 4.94 | 85,893 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,005 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,618 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,548 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,754 |
| Danube Countries | 0 | - | 4.97 | 72,607 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,871 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,018 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,525 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,002 |
| European Landlocked Countries | 0 | - | 4.99 | 147,815 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,603 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,706 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,829 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,971 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,956 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,704 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,172 |
| Countries in the Alps | 0 | - | 4.87 | 119,046 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,116 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,250 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,090 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,218 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,189 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,423 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,641 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,033 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,536 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,348 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,977 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,850 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,704 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,959 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,062 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,250 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,768 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,761 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,900 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,549 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,629 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,642 |
| Largest Countries By Category | 0 | - | 4.97 | 159,175 |
| Countries by Countries | 0 | - | 4.97 | 63,851 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,518 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,457 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,717 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,616 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,600 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,284 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,415 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,720 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,063 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,643 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,317 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,590 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,952 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,912 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,215 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,996 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,831 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,843 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 58,017 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,014 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,166 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,619 |
| Island Countries | 0 | - | 4.99 | 713,181 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,690 |
| Northernmost Countries | 0 | - | 4.99 | 364,821 |
| Countries of South America | 0 | - | 5.00 | 934,878 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,224 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,550 |
| "Land" Countries | 0 | - | 4.98 | 339,161 |
| Former Countries by Capital | 0 | - | 4.45 | 127,915 |
| Former Countries | 0 | - | 4.77 | 134,346 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,394 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,642 |
| Countries with Megacities | 0 | - | 4.99 | 268,157 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,292 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,405 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,619 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,519 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,414 |
| Countries by Official Language | 0 | - | 4.95 | 196,323 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,079 |
| Countries in their Native Language | 0 | - | 4.99 | 200,033 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Megadiverse Countries | 0 | - | 4.96 | 149,737 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,213 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,594 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,843 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,541 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,653 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,206 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,886 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,528 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,248 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,668 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,008 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,876 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,644 |
| Battle to Country | 0 | - | 4.91 | 54,156 |
| World Map Quiz | 0 | - | 4.81 | 65,980 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,155 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,859 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,332 |
| Countries by Road Signs | 0 | - | 4.98 | 54,496 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,621 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,289 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,760 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,051 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,613 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,724 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,902 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,784 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,011 |
| Widest Countries East to West | 0 | - | 4.92 | 130,903 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,463 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,195 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,450 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,646 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,767 |
| Countries that End in N | 0 | - | 4.95 | 172,765 |
| Countries with Five Letters | 0 | - | 4.96 | 284,826 |
| Countries with Six Letters | 0 | - | 4.94 | 215,101 |
| Countries with W | 0 | - | 4.96 | 161,416 |
| Countries with Z | 0 | - | 4.98 | 293,161 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,789 |
| Countries That End in U | 0 | - | 4.95 | 121,452 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,539 |
| Countries that End in O | 0 | - | 4.92 | 160,422 |
| Countries that End in R | 0 | - | 4.87 | 119,314 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,085 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,253 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,582 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,297 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,968 |
| Countries That End in Y | 0 | - | 4.91 | 186,201 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,506 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,476 |
| Countries that End in I | 0 | - | 4.94 | 135,461 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,442 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,178 |
| Countries That End in NIA | 0 | - | 4.92 | 110,190 |
| Countries That End in BIA | 0 | - | 4.93 | 149,787 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,001 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,944 |
| Countries That End in RIA | 0 | - | 4.93 | 127,193 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,589 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,061 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,458 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,922 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,482 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,954 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,511 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,108 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,766 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,965 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,680 |
| Countries that End in L | 0 | - | 4.94 | 157,293 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,803 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,391 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,918 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,183 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,568 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,751 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,377 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,566 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,472 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,257 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,358 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,309 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,984 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,894 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,390 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,771 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,188 |
