| Independence from Whom | 0 | - | 4.99 | 212,599 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,103 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,707 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,772 |
| Recently Independent Countries | 0 | - | 4.98 | 159,722 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,616 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,266 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,752 |
| Countries by Former Name | 0 | - | 4.99 | 125,581 |
| Historical City to Country | 0 | - | 4.85 | 78,767 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,740,070 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,141 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,712 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,403 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,078 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,426 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,738 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,592 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,917 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,621 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,047 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,326 |
| Landlocked Countries | 0 | - | 4.99 | 423,919 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,766 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,089 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,317 |
| Battle to Country | 0 | - | 4.91 | 53,742 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,324 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,137 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,617 |
| Island Countries | 0 | - | 4.99 | 711,813 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,393 |
| Himalayan Countries | 0 | - | 4.94 | 139,558 |
| Andean Countries | 0 | - | 4.94 | 85,080 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,261 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,486 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,827 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,133 |
| Danube Countries | 0 | - | 4.97 | 72,217 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,320 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,637 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,730 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,234 |
| European Landlocked Countries | 0 | - | 4.99 | 147,393 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,997 |
| Countries with the Most Species | 0 | - | 4.99 | 103,426 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,120 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,686 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,799 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,707 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,443 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,856 |
| Countries in the Alps | 0 | - | 4.87 | 118,503 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,108 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,472 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,816 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,819 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,755 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,930 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,683 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,307 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,026 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,768 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,633 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,395 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,641 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,730 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,393 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,478 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,295 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,382 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,956 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,688 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,388 |
| Largest Countries By Category | 0 | - | 4.97 | 158,556 |
| Countries by Countries | 0 | - | 4.96 | 63,448 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,796 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,025 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,351 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,626 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,918 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,564 |
| Northernmost Countries | 0 | - | 4.99 | 363,129 |
| Countries of South America | 0 | - | 5.00 | 930,076 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,446 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,707 |
| "Land" Countries | 0 | - | 4.98 | 337,907 |
| Countries by Independence Day | 0 | - | 4.62 | 52,832 |
| Former Countries by Capital | 0 | - | 4.45 | 127,719 |
| Former Countries | 0 | - | 4.77 | 134,077 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,564 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,384 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,766 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,463 |
| Countries with Megacities | 0 | - | 4.99 | 265,912 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,258 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,759 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,514 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,864 |
| Countries by Official Language | 0 | - | 4.95 | 195,666 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,147 |
| Countries in their Native Language | 0 | - | 4.99 | 199,435 |
| Subdivisions by Country | 0 | - | 4.87 | 50,540 |
| Megadiverse Countries | 0 | - | 4.96 | 135,160 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,458 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,351 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,166 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,381 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,473 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,750 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,208 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,108 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,274 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,334 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,064 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,479 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,604 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,869 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,949 |
| World Map Quiz | 0 | - | 4.81 | 65,388 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,323 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,536 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,741 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,705 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,356 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,003 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,213 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,333 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,545 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,591 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,293 |
| Widest Countries East to West | 0 | - | 4.92 | 130,221 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,535 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,038 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,443 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,939 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,816 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,155 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,449 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,699 |
| Countries that End in N | 0 | - | 4.95 | 171,582 |
| Countries with Five Letters | 0 | - | 4.96 | 283,238 |
| Countries with Six Letters | 0 | - | 4.94 | 214,039 |
| Countries with W | 0 | - | 4.96 | 160,653 |
| Countries with Z | 0 | - | 4.98 | 291,995 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,022 |
| Countries That End in U | 0 | - | 4.95 | 121,036 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,811 |
| Countries that End in O | 0 | - | 4.92 | 159,678 |
| Countries that End in R | 0 | - | 4.87 | 119,081 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,835 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,484 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,943 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,657 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,586 |
| Countries That End in Y | 0 | - | 4.91 | 186,003 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,203 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,085 |
| Countries that End in I | 0 | - | 4.94 | 135,222 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,389 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,941 |
| Countries That End in NIA | 0 | - | 4.92 | 109,929 |
| Countries That End in BIA | 0 | - | 4.93 | 149,411 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,344 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,637 |
| Countries That End in RIA | 0 | - | 4.93 | 126,948 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,223 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,131 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,970 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,411 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,954 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,696 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,201 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,732 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,552 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,529 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,214 |
| Countries that End in L | 0 | - | 4.94 | 157,001 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,765 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,161 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,094 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,140 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,133 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,931 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,304 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,065 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,743 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,064 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,761 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,124 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,568 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,402 |
| One Border Countries | 0 | - | 4.98 | 471,018 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,617 |
