| Countries in World War I | 0 | - | 4.88 | 229,022 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,986 |
| Battle to Country | 0 | - | 4.91 | 53,893 |
| Countries in World War II | 0 | - | 4.53 | 918,064 |
| Independence from Whom | 0 | - | 4.99 | 212,895 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,320 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,801 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,016 |
| Recently Independent Countries | 0 | - | 4.98 | 159,988 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,838 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,578 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,004 |
| Countries by Former Name | 0 | - | 4.99 | 125,740 |
| Historical City to Country | 0 | - | 4.85 | 78,963 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,821,017 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,310 |
| 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 | 67,482 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,835 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,697 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,020 |
| Countries with the Most Christians | 0 | - | 4.93 | 144,519 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,654 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,992 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,473 |
| Landlocked Countries | 0 | - | 4.99 | 424,949 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,799,356 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,191 |
| Countries with the Most Catholics | 0 | - | 4.90 | 110,304 |
| Orthodox Countries | 0 | - | 4.92 | 132,698 |
| Countries that Have Won the Most Battles | 0 | - | 4.01 | 39,751 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,411 |
| Monarchies of Europe | 0 | - | 4.90 | 98,769 |
| Monarchies of Asia | 0 | - | 4.97 | 71,456 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,240 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,436 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,834 |
| Important Cities in WWII | 0 | - | 4.42 | 93,836 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,456 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,264 |
| Island Countries | 0 | - | 4.99 | 712,264 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,853 |
| Himalayan Countries | 0 | - | 4.93 | 139,930 |
| Andean Countries | 0 | - | 4.94 | 85,269 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,430 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,777 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,005 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,299 |
| Danube Countries | 0 | - | 4.97 | 72,306 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,468 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,748 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,945 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,443 |
| European Landlocked Countries | 0 | - | 4.99 | 147,508 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,166 |
| Countries with the Most Species | 0 | - | 4.99 | 103,513 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,297 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,734 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,844 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,780 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,510 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,945 |
| Countries in the Alps | 0 | - | 4.87 | 118,662 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,440 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,703 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,908 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,944 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,864 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,179 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,304 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,801 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,363 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,103 |
| 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 | 104,484 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,725 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,818 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,631 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,549 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,659 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,556 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,389 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,953 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,463 |
| Largest Countries By Category | 0 | - | 4.97 | 158,739 |
| Countries by Countries | 0 | - | 4.96 | 63,555 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,917 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,167 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,377 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,029 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,855 |
| Northernmost Countries | 0 | - | 4.99 | 363,637 |
| Countries of South America | 0 | - | 5.00 | 931,583 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,981 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,799 |
| "Land" Countries | 0 | - | 4.98 | 338,215 |
| Countries by Independence Day | 0 | - | 4.62 | 52,851 |
| Former Countries by Capital | 0 | - | 4.45 | 127,776 |
| Former Countries | 0 | - | 4.77 | 134,165 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,737 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,551 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,254 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 137,002 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,771 |
| Communist Countries in History | 0 | - | 4.63 | 497,836 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,785 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,705 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,703 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,002 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,195 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,953 |
| Countries with Megacities | 0 | - | 4.99 | 266,709 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,648 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,000 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,960 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,122 |
| Countries by Official Language | 0 | - | 4.95 | 195,863 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,449 |
| Countries in their Native Language | 0 | - | 4.99 | 199,628 |
| Subdivisions by Country | 0 | - | 4.87 | 50,585 |
| Megadiverse Countries | 0 | - | 4.96 | 135,222 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,837 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,500 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,409 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,202 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,504 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,531 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,791 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,236 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,353 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,336 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,404 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,118 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,547 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,660 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,152 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,997 |
| World Map Quiz | 0 | - | 4.81 | 65,568 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,868 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,634 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,096 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,990 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,481 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,372 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,338 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,456 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,660 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,647 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,460 |
| Widest Countries East to West | 0 | - | 4.92 | 130,378 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,577 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,169 |
| 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 | 95,010 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,910 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,405 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,475 |
| 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 | 96,923 |
| Countries that End in N | 0 | - | 4.94 | 171,793 |
| Countries with Five Letters | 0 | - | 4.96 | 283,563 |
| Countries with Six Letters | 0 | - | 4.94 | 214,284 |
| Countries with W | 0 | - | 4.96 | 160,835 |
| Countries with Z | 0 | - | 4.98 | 292,267 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,185 |
| Countries That End in U | 0 | - | 4.95 | 121,122 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,993 |
| Countries that End in O | 0 | - | 4.92 | 159,867 |
| Countries that End in R | 0 | - | 4.87 | 119,139 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,896 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,717 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,067 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,763 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,694 |
| Countries That End in Y | 0 | - | 4.91 | 186,053 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,367 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,191 |
| Countries that End in I | 0 | - | 4.94 | 135,271 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,529 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,012 |
| Countries That End in NIA | 0 | - | 4.92 | 110,000 |
| Countries That End in BIA | 0 | - | 4.93 | 149,521 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,449 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,712 |
| Countries That End in RIA | 0 | - | 4.93 | 127,018 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,319 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,420 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,082 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,527 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,102 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,769 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,277 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,523 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,832 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,611 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,335 |
