| Countries by Former Name | 0 | - | 4.99 | 124,416 |
| Independence from Whom | 0 | - | 4.99 | 209,943 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,928 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,067 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,211 |
| Countries by Founding Story | 0 | - | 4.95 | 76,635 |
| Cities by Former Name | 0 | - | 4.84 | 91,064 |
| Recently Independent Countries | 0 | - | 4.98 | 158,102 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,684 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,430 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,186 |
| Historical City to Country | 0 | - | 4.84 | 78,193 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,997,988 |
| Landlocked Countries | 0 | - | 4.99 | 414,568 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,724,725 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,438 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,441 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,376 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,729 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,651 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,911 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,342 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,988 |
| Himalayan Countries | 0 | - | 4.95 | 135,694 |
| Andean Countries | 0 | - | 4.94 | 83,024 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,373 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,431 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,071 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,733 |
| Danube Countries | 0 | - | 4.97 | 71,178 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,896 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,636 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,698 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,602 |
| European Landlocked Countries | 0 | - | 4.99 | 145,876 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,358 |
| Countries with the Most Species | 0 | - | 4.99 | 95,299 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,524 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,940 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,235 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,404 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,013 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,652 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,022 |
| Countries in the Alps | 0 | - | 4.86 | 116,977 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,681 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,447 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,106 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,507 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,295 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,091 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,692 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,837 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,593 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,150 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,230 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,098 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,535 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,827 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,827 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,282 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,735 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,310 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,937 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,825 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,987 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,682 |
| Largest Countries By Category | 0 | - | 4.97 | 156,906 |
| Countries by Countries | 0 | - | 4.96 | 62,358 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,548 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,304 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,997 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,810 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,357 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,848 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,953 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,034 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,207 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,854 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,141 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,477 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,317 |
| Island Countries | 0 | - | 4.99 | 707,991 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,753 |
| Northernmost Countries | 0 | - | 4.99 | 358,247 |
| Countries of South America | 0 | - | 5.00 | 916,546 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,594 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,708 |
| "Land" Countries | 0 | - | 4.98 | 333,910 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,704 |
| Countries by Independence Day | 0 | - | 4.56 | 52,635 |
| Former Countries by Capital | 0 | - | 4.45 | 127,113 |
| Former Countries | 0 | - | 4.75 | 132,800 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,365,005 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,191 |
| Battle to Country | 0 | - | 4.91 | 52,619 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,290 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,694 |
| Countries with Megacities | 0 | - | 4.99 | 247,732 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,543 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,234 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,944 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,175 |
| Countries by Official Language | 0 | - | 4.95 | 192,969 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,421 |
| Countries in their Native Language | 0 | - | 4.99 | 196,830 |
| Subdivisions by Country | 0 | - | 4.86 | 50,112 |
| Megadiverse Countries | 0 | - | 4.97 | 133,974 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,999 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,967 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,480 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,885 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,783 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,228 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,262 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,767 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,761 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,463 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,566 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,551 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,743 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,074 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,871 |
| World Map Quiz | 0 | - | 4.81 | 63,680 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,227 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,434 |
| Countries by Road Signs | 0 | - | 4.98 | 53,207 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,600 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,373 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,115 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,089 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,015 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,211 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,410 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,017 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,453 |
| Widest Countries East to West | 0 | - | 4.92 | 128,954 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,258 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,364 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,615 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,779 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,721 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,152 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 73,978 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,624 |
| Countries with Double Letters | 0 | - | 4.96 | 93,574 |
| Countries that End in N | 0 | - | 4.94 | 157,056 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,890 |
| Countries with Six Letters | 0 | - | 4.93 | 210,555 |
| Countries with W | 0 | - | 4.97 | 158,350 |
| Countries with Z | 0 | - | 4.98 | 288,084 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,675 |
| Countries That End in U | 0 | - | 4.95 | 119,585 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,776 |
| Countries that End in O | 0 | - | 4.92 | 158,615 |
| Countries that End in R | 0 | - | 4.87 | 118,337 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,907 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,284 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,466 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,589 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,128 |
| Countries That End in Y | 0 | - | 4.90 | 185,255 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,520 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,817 |
| Countries that End in I | 0 | - | 4.94 | 134,497 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,357 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,255 |
| Countries That End in NIA | 0 | - | 4.92 | 109,075 |
| Countries That End in BIA | 0 | - | 4.92 | 147,797 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,178 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,584 |
| Countries That End in RIA | 0 | - | 4.93 | 126,150 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,112 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,553 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,616 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,980 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,470 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,979 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,211 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,735 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,612 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,856 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,250 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,918 |
| Countries that End in L | 0 | - | 4.94 | 156,107 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,744 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,008 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,576 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,379 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,483 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,713 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,488 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 140,503 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,532 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,891 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,837 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,769 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,217 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,446 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,380 |
