| Countries by Former Name | 0 | - | 4.99 | 119,210 |
| Independence from Whom | 0 | - | 4.99 | 197,862 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 122,180 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,922 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 85,150 |
| Countries by Founding Story | 0 | - | 4.94 | 71,929 |
| Cities by Former Name | 0 | - | 4.85 | 87,248 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,956 |
| Countries of the World in 1900 | 0 | - | 4.88 | 74,504 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 181,477 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 138,057 |
| Historical City to Country | 0 | - | 4.83 | 75,067 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,778,023 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 375,578 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,346,155 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,421,991 |
| Most Populous Countries by Year | 0 | - | 4.81 | 101,345 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 129,258 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 71,883 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 79,783 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 56,158 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 69,821 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,524 |
| Sahara Desert Countries | 0 | - | 4.98 | 142,303 |
| Himalayan Countries | 0 | - | 4.95 | 119,272 |
| Andean Countries | 0 | - | 4.92 | 66,893 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 55,390 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,851 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,470 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 58,112 |
| Danube Countries | 0 | - | 4.97 | 60,048 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,773 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,085 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,707 |
| Countries with the Worst Passports | 0 | - | 4.92 | 61,643 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 135,046 |
| European Landlocked Countries | 0 | - | 4.99 | 140,249 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,673 |
| Countries with the Most Species | 0 | - | 4.99 | 91,830 |
| Countries 197 to 205 | 0 | - | 4.87 | 62,119 |
| Countries Settled by Vikings | 0 | - | 4.93 | 116,337 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,365 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,484 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,890 |
| Countries that Use the Peso | 0 | - | 4.84 | 49,030 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,451 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,912 |
| Countries in the Alps | 0 | - | 4.86 | 109,266 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,911 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 96,187 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,801 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,720 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,739 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,248 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,181 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,208 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,485 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,126 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,232 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,801 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 38,686 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,507 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,212 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,859 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 107,387 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,269 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,199 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 218,760 |
| World Countries - Blind Typing | 0 | - | 5.00 | 83,102 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,543 |
| Largest Countries By Category | 0 | - | 4.97 | 150,244 |
| Countries by Countries | 0 | - | 4.96 | 57,861 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,456 |
| Warsaw Pact Countries | 0 | - | 4.82 | 82,277 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,402 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.94 | 58,557 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,082 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 92,977 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,050 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 357,413 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 378,688 |
| Island Countries Quiz | 0 | - | 4.99 | 686,542 |
| Biggest Countries by Area | 0 | - | 5.00 | 981,754 |
| Northernmost Countries | 0 | - | 4.99 | 340,562 |
| Countries of South America | 0 | - | 5.00 | 851,700 |
| Countries of Oceania | 0 | - | 5.00 | 962,837 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,704,835 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,597 |
| Countries by Independence Day | 0 | - | 4.56 | 45,331 |
| Former Countries by Capital | 0 | - | 4.43 | 107,465 |
| Former Countries | 0 | - | 4.74 | 128,878 |
| Guerrillas by Country | 0 | - | 4.43 | 39,866 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,233,108 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 73,479 |
| Battle to Country | 0 | - | 4.91 | 48,179 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 156,295 |
| Countries with Megacities | 0 | - | 4.99 | 215,358 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,917 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 105,277 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 123,064 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 72,091 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 267,185 |
| Countries by Official Language | 0 | - | 4.95 | 182,479 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 279,835 |
| Countries in their Native Language | 0 | - | 4.98 | 187,387 |
| Subdivisions by Country | 0 | - | 4.86 | 48,232 |
| Megadiverse Countries | 0 | - | 4.96 | 129,979 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 120,519 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,256 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,137 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 154,225 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,443 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,670 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,140 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 65,328 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,231 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,422 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,777 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 71,674 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,046 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 96,146 |
| World Map Quiz | 0 | - | 4.88 | 56,549 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 131,949 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,955 |
| Countries by Road Signs | 0 | - | 4.98 | 48,917 |
| Southernmost Countries of the World | 0 | - | 4.99 | 217,019 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,783 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 115,266 |
| Countries With the Most Languages | 0 | - | 4.88 | 187,346 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,968 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,767 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,447 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,824 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,963 |
| Widest Countries East to West | 0 | - | 4.92 | 123,863 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,006 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,448 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,137 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,722 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 124,349 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,676 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,833 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,374 |
| Countries with Double Letters | 0 | - | 4.96 | 80,465 |
| Countries that End in N | 0 | - | 4.93 | 144,587 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 243,590 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,812 |
| Countries with W | 0 | - | 4.97 | 132,162 |
| Countries with Z | 0 | - | 4.98 | 274,011 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,409 |
| Countries That End in U | 0 | - | 4.95 | 113,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,995 |
| Countries that End in O | 0 | - | 4.92 | 153,099 |
| Countries that End in R | 0 | - | 4.84 | 99,513 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,501 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,638 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,481 |
| Countries by Last Two Letters | 0 | - | 4.89 | 121,221 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,877 |
| Countries That End in Y | 0 | - | 4.91 | 181,278 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,986 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,701 |
| Countries that End in I | 0 | - | 4.92 | 117,074 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,401 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,774 |
| Countries That End in NIA | 0 | - | 4.92 | 104,625 |
| Countries That End in BIA | 0 | - | 4.92 | 141,710 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 160,485 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,105 |
| Countries That End in RIA | 0 | - | 4.89 | 104,956 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 105,204 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 213,366 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 126,244 |
| Divided Country Name Puzzle #3 | 0 | - | 4.90 | 117,980 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 83,981 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,001 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 97,057 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 119,221 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 45,838 |
| Countries with the Word "And" | 0 | - | 4.98 | 89,072 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 46,858 |
| Countries that End in L | 0 | - | 4.94 | 151,130 |
| "Land" Countries | 0 | - | 4.98 | 298,622 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 195,969 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,766 |
| City to Country Quiz #1 | 0 | - | 4.95 | 138,487 |
| City to Country Quiz #3 | 0 | - | 4.87 | 103,190 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 74,933 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 217,949 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 191,450 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 121,567 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 139,601 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 214,821 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 146,275 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,451 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 105,445 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,608 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,354 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,371,962 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 362,473 |
