| Independence from Whom | 0 | - | 4.99 | 209,856 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,880 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,043 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,164 |
| Countries by Founding Story | 0 | - | 4.95 | 76,607 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,971,191 |
| Recently Independent Countries | 0 | - | 4.98 | 158,073 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,638 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,355 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,085 |
| Countries by Former Name | 0 | - | 4.99 | 124,385 |
| Historical City to Country | 0 | - | 4.84 | 78,175 |
| Landlocked Countries | 0 | - | 4.99 | 414,254 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,373 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,407 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,356 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,700 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,637 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,892 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,312 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,914 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,294 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,681 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,814 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,933 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,722,065 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,847 |
| Himalayan Countries | 0 | - | 4.95 | 135,577 |
| Andean Countries | 0 | - | 4.94 | 82,949 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,312 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,352 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,015 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,681 |
| Danube Countries | 0 | - | 4.97 | 71,135 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,842 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,604 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,615 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,527 |
| European Landlocked Countries | 0 | - | 4.99 | 145,835 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,302 |
| Countries with the Most Species | 0 | - | 4.99 | 95,281 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,445 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,220 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,391 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,989 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,627 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,004 |
| Countries in the Alps | 0 | - | 4.86 | 116,926 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,639 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,376 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,064 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,476 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,247 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,059 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,662 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,814 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,522 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,117 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,216 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,080 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,498 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,803 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,795 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,197 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,709 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,289 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,861 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,623 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,878 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,637 |
| Largest Countries By Category | 0 | - | 4.97 | 156,867 |
| Countries by Countries | 0 | - | 4.96 | 62,323 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,507 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,982 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,349 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,914 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,182 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,828 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,786 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,359 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,175 |
| Island Countries | 0 | - | 4.99 | 707,861 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,329 |
| Northernmost Countries | 0 | - | 4.99 | 358,056 |
| Countries of South America | 0 | - | 5.00 | 915,896 |
| Countries of Oceania | 0 | - | 5.00 | 1,041,933 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,850,556 |
| "Land" Countries | 0 | - | 4.98 | 333,812 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,676 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,111 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,158 |
| Battle to Country | 0 | - | 4.91 | 52,597 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,271 |
| Countries by Independence Day | 0 | - | 4.56 | 52,627 |
| Former Countries by Capital | 0 | - | 4.45 | 127,091 |
| Former Countries | 0 | - | 4.75 | 132,767 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,589 |
| Countries with Megacities | 0 | - | 4.99 | 247,493 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,432 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,176 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,848 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,103 |
| Countries by Official Language | 0 | - | 4.95 | 192,912 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,324 |
| Countries in their Native Language | 0 | - | 4.99 | 196,762 |
| Subdivisions by Country | 0 | - | 4.86 | 50,099 |
| Megadiverse Countries | 0 | - | 4.97 | 133,959 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,934 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,949 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,463 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,874 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,742 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,066 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,210 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,244 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,759 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,719 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,453 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,540 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,532 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,726 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,054 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,772 |
| World Map Quiz | 0 | - | 4.81 | 63,630 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,059 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,400 |
| Countries by Road Signs | 0 | - | 4.98 | 53,172 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,493 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,276 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,025 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,947 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,937 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,126 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,345 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,981 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,389 |
| Widest Countries East to West | 0 | - | 4.92 | 128,700 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,232 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,307 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,597 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,736 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,690 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,114 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,947 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,601 |
| Countries with Double Letters | 0 | - | 4.96 | 93,501 |
| Countries that End in N | 0 | - | 4.94 | 156,987 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,808 |
| Countries with Six Letters | 0 | - | 4.93 | 210,487 |
| Countries with W | 0 | - | 4.97 | 158,302 |
| Countries with Z | 0 | - | 4.98 | 288,015 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,625 |
| Countries That End in U | 0 | - | 4.95 | 119,552 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,692 |
| Countries that End in O | 0 | - | 4.92 | 158,592 |
| Countries that End in R | 0 | - | 4.87 | 118,308 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,880 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,215 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,418 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,555 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,099 |
| Countries That End in Y | 0 | - | 4.90 | 185,237 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,478 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,772 |
| Countries that End in I | 0 | - | 4.94 | 134,471 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,302 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,237 |
| Countries That End in NIA | 0 | - | 4.92 | 109,054 |
| Countries That End in BIA | 0 | - | 4.92 | 147,768 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,141 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,547 |
| Countries That End in RIA | 0 | - | 4.93 | 126,128 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,077 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,338 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,570 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,943 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,437 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,962 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,183 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,709 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,570 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,844 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,219 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,883 |
| Countries that End in L | 0 | - | 4.94 | 155,839 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,588 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,998 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,556 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,350 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,466 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,564 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,384 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 138,553 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,454 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,777 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,769 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,741 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,189 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,436 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,357 |
