| Independence from Whom | 0 | - | 4.99 | 212,429 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,979 |
| Countries in World War I | 0 | - | 4.88 | 228,682 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,635 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,673 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,660 |
| Battle to Country | 0 | - | 4.91 | 53,683 |
| Recently Independent Countries | 0 | - | 4.98 | 159,651 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,482 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,112 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,614 |
| Countries by Former Name | 0 | - | 4.99 | 125,504 |
| Historical City to Country | 0 | - | 4.85 | 78,729 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,693,478 |
| Communist Countries in History | 0 | - | 4.63 | 497,138 |
| Landlocked Countries | 0 | - | 4.99 | 423,348 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,066 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,642 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,367 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,035 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,395 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,704 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,540 |
| Countries in World War II | 0 | - | 4.54 | 916,259 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,869 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,159 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,603 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,745 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,215 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,788,485 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,024 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,150 |
| Himalayan Countries | 0 | - | 4.94 | 139,341 |
| Andean Countries | 0 | - | 4.94 | 84,941 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,165 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,326 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,730 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,043 |
| Danube Countries | 0 | - | 4.97 | 72,164 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,241 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,569 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,605 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,111 |
| European Landlocked Countries | 0 | - | 4.99 | 147,320 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,894 |
| Countries with the Most Species | 0 | - | 4.99 | 103,375 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,026 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,661 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,776 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,643 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,401 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,807 |
| Countries in the Alps | 0 | - | 4.87 | 118,422 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,905 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,355 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,780 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,761 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,669 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,067 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,858 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,637 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,268 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,988 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,738 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,611 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,351 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,600 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,672 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,253 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,435 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,972 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,020 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,289 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,686 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,518 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,469 |
| Orthodox Countries | 0 | - | 4.92 | 132,464 |
| Countries by Countries | 0 | - | 4.96 | 63,394 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,224 |
| Monarchies of Europe | 0 | - | 4.90 | 98,513 |
| Monarchies of Asia | 0 | - | 4.97 | 71,337 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,919 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,333 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,830 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,125 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,200 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,824 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,953 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,233 |
| Island Countries | 0 | - | 4.99 | 711,563 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,286 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,686 |
| Northernmost Countries | 0 | - | 4.99 | 362,679 |
| Countries of South America | 0 | - | 5.00 | 929,326 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,360 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,741 |
| "Land" Countries | 0 | - | 4.98 | 337,732 |
| Countries by Independence Day | 0 | - | 4.62 | 52,815 |
| Former Countries by Capital | 0 | - | 4.45 | 127,680 |
| Former Countries | 0 | - | 4.77 | 134,032 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,469 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,093 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,962 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,221 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,541 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,515 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,447 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,582 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,473 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,511 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,329 |
| Countries with Megacities | 0 | - | 4.99 | 265,553 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,125 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,691 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,388 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,763 |
| Countries by Official Language | 0 | - | 4.95 | 195,536 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,787 |
| Countries in their Native Language | 0 | - | 4.99 | 199,323 |
| Subdivisions by Country | 0 | - | 4.87 | 50,504 |
| Megadiverse Countries | 0 | - | 4.96 | 135,121 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,342 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,434 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,314 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,148 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,318 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,441 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,726 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,194 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,986 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,979 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,294 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,033 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,453 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,575 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,661 |
| World Map Quiz | 0 | - | 4.81 | 65,296 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,992 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,493 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,388 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,472 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,166 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,714 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,064 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,182 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,430 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,516 |
| Tallest Countries North to South | 0 | - | 4.83 | 121,434 |
| Widest Countries East to West | 0 | - | 4.92 | 129,805 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,488 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,937 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,405 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,869 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,750 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,010 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,427 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,828 |
| Political Movements by Country | 0 | - | 4.46 | 72,674 |
| Countries with Double Letters | 0 | - | 4.96 | 96,561 |
| Countries that End in N | 0 | - | 4.95 | 171,464 |
| Countries with Five Letters | 0 | - | 4.96 | 283,034 |
| Countries with Six Letters | 0 | - | 4.94 | 213,901 |
| Countries with W | 0 | - | 4.96 | 160,567 |
| Countries with Z | 0 | - | 4.98 | 291,823 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,933 |
| Countries That End in U | 0 | - | 4.95 | 120,979 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,709 |
| Countries that End in O | 0 | - | 4.92 | 159,632 |
| Countries that End in R | 0 | - | 4.87 | 119,052 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,807 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,387 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,864 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,615 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,521 |
| Countries That End in Y | 0 | - | 4.91 | 185,964 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,118 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,021 |
| Countries that End in I | 0 | - | 4.94 | 135,190 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,293 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,902 |
| Countries That End in NIA | 0 | - | 4.92 | 109,872 |
| Countries That End in BIA | 0 | - | 4.93 | 149,350 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,271 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,560 |
| Countries That End in RIA | 0 | - | 4.93 | 126,909 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,154 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,959 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,891 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,323 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,877 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,657 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,148 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,476 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,661 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,522 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,147 |
| Countries that End in L | 0 | - | 4.94 | 156,957 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,445 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,299 |
