| Countries in World War I | 0 | - | 4.88 | 229,024 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,990 |
| Battle to Country | 0 | - | 4.91 | 53,894 |
| Countries in World War II | 0 | - | 4.53 | 918,086 |
| Independence from Whom | 0 | - | 4.99 | 212,898 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,325 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,801 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,019 |
| Recently Independent Countries | 0 | - | 4.98 | 160,023 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,843 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,583 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,011 |
| Countries by Former Name | 0 | - | 4.99 | 125,745 |
| Historical City to Country | 0 | - | 4.85 | 78,966 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,822,917 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,311 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,824 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,478 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,142 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,483 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,835 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,699 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,026 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,526 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,656 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,997 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,474 |
| Landlocked Countries | 0 | - | 4.99 | 424,967 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,799,491 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,191 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,308 |
| Orthodox Countries | 0 | - | 4.92 | 132,701 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,752 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,415 |
| Monarchies of Europe | 0 | - | 4.90 | 98,772 |
| Monarchies of Asia | 0 | - | 4.97 | 71,458 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,241 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,440 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,843 |
| Important Cities in WWII | 0 | - | 4.42 | 93,837 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,462 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,277 |
| Island Countries | 0 | - | 4.99 | 712,273 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,865 |
| Himalayan Countries | 0 | - | 4.93 | 139,936 |
| Andean Countries | 0 | - | 4.94 | 85,275 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,433 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,781 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,012 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,302 |
| Danube Countries | 0 | - | 4.97 | 72,308 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,469 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,750 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,958 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,449 |
| European Landlocked Countries | 0 | - | 4.99 | 147,514 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,170 |
| Countries with the Most Species | 0 | - | 4.99 | 103,515 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,299 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,734 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,846 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,780 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,512 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,946 |
| Countries in the Alps | 0 | - | 4.87 | 118,666 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,448 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,709 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,909 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,948 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,867 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,180 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,306 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,802 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,364 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,104 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,811 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,686 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,485 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,725 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,821 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,635 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,550 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,665 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,558 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,392 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,959 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,466 |
| Largest Countries By Category | 0 | - | 4.97 | 158,741 |
| Countries by Countries | 0 | - | 4.96 | 63,562 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,962 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,170 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,377 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,032 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,886 |
| Northernmost Countries | 0 | - | 4.99 | 363,649 |
| Countries of South America | 0 | - | 5.00 | 931,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,018 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,858 |
| "Land" Countries | 0 | - | 4.98 | 338,218 |
| Countries by Independence Day | 0 | - | 4.62 | 52,852 |
| Former Countries by Capital | 0 | - | 4.45 | 127,776 |
| Former Countries | 0 | - | 4.77 | 134,165 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,741 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,560 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,256 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,013 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,776 |
| Communist Countries in History | 0 | - | 4.63 | 497,845 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,786 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,705 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,704 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,036 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,199 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,958 |
| Countries with Megacities | 0 | - | 4.99 | 266,728 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,653 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,000 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,966 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,125 |
| Countries by Official Language | 0 | - | 4.95 | 195,867 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,454 |
| Countries in their Native Language | 0 | - | 4.99 | 199,631 |
| Subdivisions by Country | 0 | - | 4.87 | 50,588 |
| Megadiverse Countries | 0 | - | 4.96 | 135,225 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,839 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,501 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,412 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,203 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,506 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,534 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,791 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,237 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,360 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,337 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,405 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,119 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,549 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,662 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,161 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,997 |
| World Map Quiz | 0 | - | 4.81 | 65,571 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,879 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,636 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,101 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,991 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,481 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,375 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,342 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,459 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,661 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,649 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,470 |
| Widest Countries East to West | 0 | - | 4.92 | 130,381 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,578 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,171 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,489 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,011 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,914 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,405 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,476 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,880 |
| Political Movements by Country | 0 | - | 4.46 | 72,742 |
| Countries with Double Letters | 0 | - | 4.96 | 96,932 |
| Countries that End in N | 0 | - | 4.94 | 171,799 |
| Countries with Five Letters | 0 | - | 4.96 | 283,565 |
| Countries with Six Letters | 0 | - | 4.94 | 214,292 |
| Countries with W | 0 | - | 4.96 | 160,838 |
| Countries with Z | 0 | - | 4.98 | 292,271 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,193 |
| Countries That End in U | 0 | - | 4.95 | 121,123 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,997 |
| Countries that End in O | 0 | - | 4.92 | 159,902 |
| Countries that End in R | 0 | - | 4.87 | 119,140 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,898 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,720 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,071 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,767 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,698 |
| Countries That End in Y | 0 | - | 4.91 | 186,055 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,372 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,197 |
| Countries that End in I | 0 | - | 4.94 | 135,277 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,533 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,016 |
| Countries That End in NIA | 0 | - | 4.92 | 110,005 |
| Countries That End in BIA | 0 | - | 4.93 | 149,526 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,451 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,714 |
| Countries That End in RIA | 0 | - | 4.93 | 127,020 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,320 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,428 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,087 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,530 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,103 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,771 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,278 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,524 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,836 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,613 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,339 |
