| Warsaw Pact Countries | 0 | - | 4.83 | 84,428 |
| Independence from Whom | 0 | - | 4.99 | 211,127 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,562 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,312 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,825 |
| Countries by Founding Story | 0 | - | 4.95 | 76,986 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,407 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,520 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,175 |
| Countries by Former Name | 0 | - | 4.99 | 124,830 |
| Historical City to Country | 0 | - | 4.84 | 78,390 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,264,859 |
| Landlocked Countries | 0 | - | 4.99 | 417,976 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,550 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,238 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,017 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,010 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,054 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,107 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,372 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,001 |
| Former Capitals | 0 | - | 4.88 | 71,343 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,517 |
| Himalayan Countries | 0 | - | 4.94 | 137,005 |
| Andean Countries | 0 | - | 4.95 | 83,723 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,968 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,333 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,646 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,218 |
| Danube Countries | 0 | - | 4.97 | 71,559 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,405 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,971 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,467 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,522 |
| European Landlocked Countries | 0 | - | 4.99 | 146,642 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,990 |
| Countries with the Most Species | 0 | - | 4.99 | 102,701 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,125 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,205 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,387 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,553 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,245 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,907 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,294 |
| Countries in the Alps | 0 | - | 4.86 | 117,537 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,034 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,181 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,354 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,883 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,988 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,380 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,153 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,106 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,910 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,468 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,430 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,288 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,849 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,113 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,137 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,987 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,991 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,515 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,398 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,808 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,981 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,923 |
| Largest Countries By Category | 0 | - | 4.97 | 157,487 |
| Countries by Countries | 0 | - | 4.96 | 62,751 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,069 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,129 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,630 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,450 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,363 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,233 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,197 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,559 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,235 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,104 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,337 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,599 |
| Island Countries | 0 | - | 4.99 | 709,342 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,967 |
| Northernmost Countries | 0 | - | 4.99 | 360,037 |
| Countries of South America | 0 | - | 5.00 | 921,687 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,481 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,371 |
| "Land" Countries | 0 | - | 4.98 | 335,549 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,507 |
| Countries by Independence Day | 0 | - | 4.61 | 52,698 |
| Former Countries by Capital | 0 | - | 4.45 | 127,313 |
| Former Countries | 0 | - | 4.75 | 133,083 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,545 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,568 |
| Battle to Country | 0 | - | 4.91 | 53,066 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,556 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,689 |
| Countries with Megacities | 0 | - | 4.99 | 249,797 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,520 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,789 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,857 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,775 |
| Countries by Official Language | 0 | - | 4.95 | 194,456 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,283 |
| Countries in their Native Language | 0 | - | 4.99 | 198,014 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Megadiverse Countries | 0 | - | 4.96 | 134,697 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,150 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,146 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,701 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,989 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,599 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,746 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,447 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,924 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,645 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,660 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,883 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,727 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,050 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,279 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,932 |
| World Map Quiz | 0 | - | 4.81 | 64,371 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,093 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,928 |
| Countries by Road Signs | 0 | - | 4.98 | 53,566 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,312 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,824 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,546 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,069 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,428 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,601 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,748 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,213 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,210 |
| Widest Countries East to West | 0 | - | 4.92 | 129,275 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,365 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,834 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,968 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,445 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,121 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,466 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,193 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,889 |
| Countries that End in N | 0 | - | 4.95 | 169,468 |
| Countries with Five Letters | 0 | - | 4.96 | 278,322 |
| Countries with Six Letters | 0 | - | 4.94 | 212,227 |
| Countries with W | 0 | - | 4.97 | 159,369 |
| Countries with Z | 0 | - | 4.98 | 289,578 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,572 |
| Countries That End in U | 0 | - | 4.95 | 120,333 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,586 |
| Countries that End in O | 0 | - | 4.92 | 159,134 |
| Countries that End in R | 0 | - | 4.87 | 118,673 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,462 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,165 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,997 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,995 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,586 |
| Countries That End in Y | 0 | - | 4.90 | 185,594 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,089 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,308 |
| Countries that End in I | 0 | - | 4.94 | 134,814 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,928 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,526 |
| Countries That End in NIA | 0 | - | 4.92 | 109,447 |
| Countries That End in BIA | 0 | - | 4.93 | 148,746 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,612 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,965 |
| Countries That End in RIA | 0 | - | 4.93 | 126,457 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,547 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,451 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,096 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,432 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,003 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,263 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,590 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,143 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,034 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,147 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,728 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,411 |
| Countries that End in L | 0 | - | 4.94 | 156,467 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,620 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,137 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,786 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,659 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,710 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,571 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,009 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,517 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,983 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,460 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,466 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,911 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,335 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,571 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,599 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,937 |
