| Warsaw Pact Countries | 0 | - | 4.83 | 84,428 |
| Independence from Whom | 0 | - | 4.99 | 211,125 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,557 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,312 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,824 |
| Countries by Founding Story | 0 | - | 4.95 | 76,985 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,404 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,513 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,171 |
| Countries by Former Name | 0 | - | 4.99 | 124,826 |
| Historical City to Country | 0 | - | 4.84 | 78,390 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,263,265 |
| Landlocked Countries | 0 | - | 4.99 | 417,956 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,347 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,234 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,016 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,007 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,035 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,104 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,371 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,998 |
| Former Capitals | 0 | - | 4.88 | 71,343 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,508 |
| Himalayan Countries | 0 | - | 4.94 | 137,000 |
| Andean Countries | 0 | - | 4.95 | 83,720 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,965 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,327 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,646 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,217 |
| Danube Countries | 0 | - | 4.97 | 71,559 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,400 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,970 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,464 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,516 |
| European Landlocked Countries | 0 | - | 4.99 | 146,614 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,986 |
| Countries with the Most Species | 0 | - | 4.99 | 102,697 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,123 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,204 |
| 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 | 59,244 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,907 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,292 |
| Countries in the Alps | 0 | - | 4.86 | 117,535 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,034 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,177 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,353 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,880 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,985 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,380 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,150 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,102 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,908 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,467 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,429 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,288 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,846 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,111 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,136 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,986 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,990 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,514 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,396 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,802 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,979 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,920 |
| Largest Countries By Category | 0 | - | 4.97 | 157,485 |
| Countries by Countries | 0 | - | 4.96 | 62,751 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,066 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,126 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,626 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,449 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,363 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,231 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,182 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,556 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,233 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,094 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,333 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,591 |
| Island Countries | 0 | - | 4.99 | 709,338 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,949 |
| Northernmost Countries | 0 | - | 4.99 | 360,028 |
| Countries of South America | 0 | - | 5.00 | 921,652 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,449 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,253 |
| "Land" Countries | 0 | - | 4.98 | 335,541 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,502 |
| Countries by Independence Day | 0 | - | 4.61 | 52,698 |
| Former Countries by Capital | 0 | - | 4.45 | 127,312 |
| Former Countries | 0 | - | 4.75 | 133,081 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,511 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,566 |
| Battle to Country | 0 | - | 4.91 | 53,064 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,556 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,683 |
| Countries with Megacities | 0 | - | 4.99 | 249,789 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,518 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,787 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,854 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,773 |
| Countries by Official Language | 0 | - | 4.95 | 194,454 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,281 |
| Countries in their Native Language | 0 | - | 4.99 | 198,011 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Megadiverse Countries | 0 | - | 4.96 | 134,697 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,149 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,145 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,700 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,988 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,597 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,745 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,445 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,918 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,643 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,659 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,872 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,726 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,040 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,278 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,927 |
| World Map Quiz | 0 | - | 4.81 | 64,369 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,084 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,924 |
| Countries by Road Signs | 0 | - | 4.98 | 53,566 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,310 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,823 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,544 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,067 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,426 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,600 |
| 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 | 120,208 |
| Widest Countries East to West | 0 | - | 4.92 | 129,272 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,365 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,831 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,966 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,445 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,118 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,465 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,191 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,886 |
| Countries that End in N | 0 | - | 4.95 | 169,455 |
| Countries with Five Letters | 0 | - | 4.96 | 278,227 |
| Countries with Six Letters | 0 | - | 4.94 | 212,226 |
| Countries with W | 0 | - | 4.97 | 159,362 |
| Countries with Z | 0 | - | 4.98 | 289,574 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,570 |
| Countries That End in U | 0 | - | 4.95 | 120,333 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,581 |
| 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 | 208,157 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,996 |
| 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 | 185,591 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,086 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,306 |
| Countries that End in I | 0 | - | 4.94 | 134,813 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,928 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,524 |
| Countries That End in NIA | 0 | - | 4.92 | 109,443 |
| Countries That End in BIA | 0 | - | 4.93 | 148,744 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,612 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,963 |
| Countries That End in RIA | 0 | - | 4.93 | 126,455 |
| 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 | 133,093 |
| 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 | 74,262 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,589 |
| 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 | 116,727 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,411 |
| Countries that End in L | 0 | - | 4.94 | 156,466 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,607 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,136 |
| 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 | 78,709 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,568 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,004 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,515 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,980 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,455 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,446 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,910 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,335 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,569 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,598 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,912 |
