| Countries by Former Name | 0 | - | 4.99 | 126,057 |
| Independence from Whom | 0 | - | 4.99 | 213,597 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,792 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,972 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,399 |
| Countries by Founding Story | 0 | - | 4.95 | 77,963 |
| Cities by Former Name | 0 | - | 4.83 | 92,233 |
| Recently Independent Countries | 0 | - | 4.98 | 160,609 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,333 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,267 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,653 |
| Historical City to Country | 0 | - | 4.85 | 79,132 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,023,410 |
| Landlocked Countries | 0 | - | 4.99 | 427,924 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,817,107 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,773 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,093 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,656 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,345 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,600 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,968 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,937 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,217 |
| Himalayan Countries | 0 | - | 4.93 | 141,098 |
| Andean Countries | 0 | - | 4.94 | 85,950 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,048 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,693 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,598 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,791 |
| Danube Countries | 0 | - | 4.97 | 72,629 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,900 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,040 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,591 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,065 |
| European Landlocked Countries | 0 | - | 4.99 | 147,844 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,640 |
| Countries with the Most Species | 0 | - | 4.99 | 103,687 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,748 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,239 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,840 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,985 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,972 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,724 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,206 |
| Countries in the Alps | 0 | - | 4.87 | 119,081 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,179 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,291 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,105 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,236 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,216 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,437 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,662 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,052 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,552 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,366 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,988 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,861 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,724 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,983 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,085 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,317 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,775 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,905 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,939 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,669 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,752 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,657 |
| Largest Countries By Category | 0 | - | 4.97 | 159,221 |
| Countries by Countries | 0 | - | 4.97 | 63,873 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,557 |
| Warsaw Pact Countries | 0 | - | 4.83 | 85,029 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,467 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,881 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,727 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,879 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 58,041 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,700 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,620 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,314 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,223 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,238 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,768 |
| Island Countries | 0 | - | 4.99 | 713,320 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,976 |
| Northernmost Countries | 0 | - | 4.99 | 364,943 |
| Countries of South America | 0 | - | 5.00 | 935,207 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,802 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,361 |
| "Land" Countries | 0 | - | 4.98 | 339,227 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,441 |
| Countries by Independence Day | 0 | - | 4.62 | 52,891 |
| Former Countries by Capital | 0 | - | 4.45 | 127,932 |
| Former Countries | 0 | - | 4.77 | 134,365 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,399,111 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,666 |
| Battle to Country | 0 | - | 4.91 | 54,182 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,360 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,722 |
| Countries with Megacities | 0 | - | 4.99 | 268,305 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,350 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,448 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,698 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,558 |
| Countries by Official Language | 0 | - | 4.95 | 196,365 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,140 |
| Countries in their Native Language | 0 | - | 4.99 | 200,077 |
| Subdivisions by Country | 0 | - | 4.87 | 50,689 |
| Megadiverse Countries | 0 | - | 4.96 | 149,914 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,242 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,609 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,874 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,278 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,581 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,665 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,227 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,304 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,941 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,535 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,546 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,261 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,686 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,023 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,947 |
| World Map Quiz | 0 | - | 4.81 | 66,012 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,292 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,883 |
| Countries by Road Signs | 0 | - | 4.98 | 54,510 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,678 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,315 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,795 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,118 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,637 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,757 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,919 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,794 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,041 |
| Widest Countries East to West | 0 | - | 4.92 | 130,924 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,641 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,492 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,595 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,215 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,514 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,677 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,556 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,936 |
| Countries with Double Letters | 0 | - | 4.96 | 97,833 |
| Countries that End in N | 0 | - | 4.95 | 172,830 |
| Countries with Five Letters | 0 | - | 4.96 | 284,908 |
| Countries with Six Letters | 0 | - | 4.94 | 215,170 |
| Countries with W | 0 | - | 4.96 | 161,462 |
| Countries with Z | 0 | - | 4.98 | 293,239 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,831 |
| Countries That End in U | 0 | - | 4.95 | 121,477 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,587 |
| Countries that End in O | 0 | - | 4.92 | 160,444 |
| Countries that End in R | 0 | - | 4.87 | 119,329 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,094 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,309 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,898 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,324 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 144,006 |
| Countries That End in Y | 0 | - | 4.91 | 186,221 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,552 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,512 |
| Countries that End in I | 0 | - | 4.94 | 135,468 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,490 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,199 |
| Countries That End in NIA | 0 | - | 4.92 | 110,215 |
| Countries That End in BIA | 0 | - | 4.93 | 149,811 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,021 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,967 |
| Countries That End in RIA | 0 | - | 4.93 | 127,208 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,612 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,120 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,495 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,958 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,516 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,973 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,537 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,627 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,146 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,790 |
| Countries with the Word "And" | 0 | - | 4.99 | 118,009 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,707 |
| Countries that End in L | 0 | - | 4.94 | 157,311 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,900 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,398 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,930 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,199 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,587 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,794 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,412 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,584 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,503 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,299 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,378 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,326 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,991 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,903 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,406 |
