| Countries by Former Name | 0 | - | 4.99 | 124,330 |
| Independence from Whom | 0 | - | 4.99 | 209,766 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,811 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,022 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,082 |
| Countries by Founding Story | 0 | - | 4.95 | 76,571 |
| Cities by Former Name | 0 | - | 4.84 | 91,002 |
| Recently Independent Countries | 0 | - | 4.98 | 158,022 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,564 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,266 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,962 |
| Historical City to Country | 0 | - | 4.84 | 78,143 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,940,567 |
| Landlocked Countries | 0 | - | 4.99 | 413,842 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,719,110 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,295 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,346 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,324 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,662 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,602 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,853 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,260 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,685 |
| Himalayan Countries | 0 | - | 4.95 | 135,445 |
| Andean Countries | 0 | - | 4.94 | 82,859 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,255 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,259 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,942 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,632 |
| Danube Countries | 0 | - | 4.97 | 71,098 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,786 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,556 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,529 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,453 |
| European Landlocked Countries | 0 | - | 4.99 | 145,780 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,243 |
| Countries with the Most Species | 0 | - | 4.99 | 95,254 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,386 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,866 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,205 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,376 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,971 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,591 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,966 |
| Countries in the Alps | 0 | - | 4.86 | 116,865 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,587 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,290 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,025 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,441 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,198 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,024 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,600 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,777 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,397 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,082 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,202 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,053 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,466 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,775 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,770 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,122 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,665 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,268 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,801 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,429 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,743 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,616 |
| Largest Countries By Category | 0 | - | 4.97 | 156,800 |
| Countries by Countries | 0 | - | 4.96 | 62,277 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,427 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,284 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,973 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,553 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,339 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,767 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,893 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,757 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,134 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,789 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,358 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,186 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,982 |
| Island Countries | 0 | - | 4.99 | 707,717 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,794 |
| Northernmost Countries | 0 | - | 4.99 | 357,864 |
| Countries of South America | 0 | - | 5.00 | 915,246 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,069 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,339 |
| "Land" Countries | 0 | - | 4.98 | 333,712 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,637 |
| Countries by Independence Day | 0 | - | 4.56 | 52,619 |
| Former Countries by Capital | 0 | - | 4.45 | 127,067 |
| Former Countries | 0 | - | 4.75 | 132,729 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,985 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,075 |
| Battle to Country | 0 | - | 4.91 | 52,561 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.99 | 68,228 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,428 |
| Countries with Megacities | 0 | - | 4.99 | 247,239 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,265 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,084 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,702 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,000 |
| Countries by Official Language | 0 | - | 4.95 | 192,816 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,186 |
| Countries in their Native Language | 0 | - | 4.99 | 196,685 |
| Subdivisions by Country | 0 | - | 4.86 | 50,080 |
| Megadiverse Countries | 0 | - | 4.97 | 133,923 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,843 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,929 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,438 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,866 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,697 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,168 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,224 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,638 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,438 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,508 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,513 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,700 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,034 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,650 |
| World Map Quiz | 0 | - | 4.81 | 63,529 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,817 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,356 |
| Countries by Road Signs | 0 | - | 4.98 | 53,122 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,405 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,023 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,975 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,840 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,883 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,089 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,300 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,959 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,352 |
| Widest Countries East to West | 0 | - | 4.92 | 128,626 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,256 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,584 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,704 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,660 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,075 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,055 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,590 |
| Countries with Double Letters | 0 | - | 4.97 | 93,432 |
| Countries that End in N | 0 | - | 4.94 | 156,931 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,735 |
| Countries with Six Letters | 0 | - | 4.93 | 210,403 |
| Countries with W | 0 | - | 4.97 | 158,259 |
| Countries with Z | 0 | - | 4.98 | 287,928 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,582 |
| Countries That End in U | 0 | - | 4.95 | 119,534 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,618 |
| Countries that End in O | 0 | - | 4.92 | 158,572 |
| Countries that End in R | 0 | - | 4.87 | 118,287 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,868 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,111 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,366 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,519 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,057 |
| Countries That End in Y | 0 | - | 4.90 | 185,221 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,417 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,717 |
| Countries that End in I | 0 | - | 4.94 | 134,435 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,246 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,213 |
| Countries That End in NIA | 0 | - | 4.92 | 109,024 |
| Countries That End in BIA | 0 | - | 4.92 | 147,734 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,098 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,507 |
| Countries That End in RIA | 0 | - | 4.93 | 126,101 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,030 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,234 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,544 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,907 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,388 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,948 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,145 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,675 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,539 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,824 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,179 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,848 |
| Countries that End in L | 0 | - | 4.94 | 155,763 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,368 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,995 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,531 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,321 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,444 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,150 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,143 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,938 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,230 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,439 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,549 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,631 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,426 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,344 |
