| Countries in World War I | 0 | - | 4.88 | 218,249 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 217,804 |
| Battle to Country | 0 | - | 4.91 | 47,963 |
| Independence from Whom | 0 | - | 4.99 | 197,308 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 121,788 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 58,770 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 84,824 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 150,687 |
| Countries of the World in 1900 | 0 | - | 4.87 | 74,070 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 180,892 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 137,553 |
| Countries by Former Name | 0 | - | 4.99 | 118,972 |
| Historical City to Country | 0 | - | 4.83 | 74,938 |
| Countries of the World Quiz | 0 | - | 5.00 | 43,608,864 |
| Countries in World War II | 0 | - | 4.56 | 857,240 |
| Most Populous Countries by Year | 0 | - | 4.81 | 100,941 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 128,958 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.85 | 71,711 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 79,605 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 56,030 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 69,671 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 91,286 |
| Countries Settled by Vikings | 0 | - | 4.93 | 116,140 |
| Countries with the Most Christians | 0 | - | 4.92 | 130,808 |
| Warsaw Pact Countries | 0 | - | 4.82 | 82,176 |
| Least Christian Countries with Exceptions | 0 | - | 4.89 | 79,292 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 92,667 |
| Political Movements by Country | 0 | - | 4.46 | 70,303 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 373,236 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,331,885 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,404,878 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 167,364 |
| National Founders | 0 | - | 4.40 | 81,871 |
| Countries with the Most Catholics | 0 | - | 4.89 | 100,105 |
| Orthodox Countries | 0 | - | 4.91 | 123,379 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 73,221 |
| Monarchies of Europe | 0 | - | 4.89 | 92,117 |
| Monarchies of Asia | 0 | - | 4.96 | 67,519 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 104,192 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 356,577 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 377,442 |
| Island Countries Quiz | 0 | - | 4.99 | 685,256 |
| Sahara Desert Countries | 0 | - | 4.98 | 141,196 |
| Himalayan Countries | 0 | - | 4.95 | 118,361 |
| Andean Countries | 0 | - | 4.92 | 66,274 |
| Countries with the Oldest Median Age | 0 | - | 4.83 | 67,372 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 54,992 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 110,184 |
| Coffee Producing Countries | 0 | - | 4.81 | 58,054 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 57,747 |
| Danube Countries | 0 | - | 4.97 | 59,790 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 95,463 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 80,858 |
| Countries with the Best Passports | 0 | - | 4.81 | 78,100 |
| Countries with the Worst Passports | 0 | - | 4.91 | 60,187 |
| Countries with the Most Immigrants | 0 | - | 4.89 | 134,171 |
| European Landlocked Countries | 0 | - | 4.99 | 139,744 |
| Partially Recognized Countries | 0 | - | 4.98 | 96,214 |
| Countries with the Most Species | 0 | - | 4.99 | 91,646 |
| Countries 197 to 205 | 0 | - | 4.87 | 61,702 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 46,259 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,388 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 51,682 |
| Countries that Use the Peso | 0 | - | 4.83 | 48,841 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,282 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 52,704 |
| Countries in the Alps | 0 | - | 4.86 | 108,551 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 89,616 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 95,722 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 74,572 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 82,491 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 109,352 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,046 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 93,909 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,010 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,336 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 57,901 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 72,071 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 50,683 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 38,548 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 99,312 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 100,179 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,028 |
| Countries with the Most Grassland | 0 | - | 4.93 | 72,649 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 106,876 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,095 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,029 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 217,684 |
| World Countries - Blind Typing | 0 | - | 5.00 | 82,535 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 44,386 |
| Largest Countries By Category | 0 | - | 4.97 | 149,942 |
| Countries by Countries | 0 | - | 4.96 | 57,703 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 188,269 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 114,713 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 107,573 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 86,036 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,224,011 |
| Country Flags with the Most White | 0 | - | 4.87 | 130,132 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,306 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 82,791 |
| Biggest Countries by Area | 0 | - | 5.00 | 979,009 |
| Northernmost Countries | 0 | - | 4.99 | 339,790 |
| Countries of South America | 0 | - | 5.00 | 847,885 |
| Countries of Oceania | 0 | - | 5.00 | 958,438 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,696,577 |
| Top 10 Coldest European Countries | 0 | - | 4.93 | 186,488 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 120,556 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 119,525 |
| Countries by Independence Day | 0 | - | 4.57 | 45,288 |
| Former Countries by Capital | 0 | - | 4.43 | 107,328 |
| Former Countries | 0 | - | 4.74 | 128,731 |
| Guerrillas by Country | 0 | - | 4.43 | 39,785 |
| Countries of the Soviet Union | 0 | - | 4.98 | 189,089 |
| Country by Photo of its Leader | 0 | - | 4.79 | 119,411 |
| Countries in the Ottoman Empire | 0 | - | 4.88 | 69,526 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.89 | 72,738 |
| Top 10 Richest Countries in Africa | 0 | - | 4.87 | 71,858 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 142,449 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 77,572 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 68,663 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,368,600 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 361,842 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 155,105 |
| Countries with Megacities | 0 | - | 4.99 | 213,800 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 184,043 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 104,785 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 105,268 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 71,493 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 265,882 |
| Countries by Official Language | 0 | - | 4.95 | 181,892 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.90 | 278,841 |
| Commonwealth of Nations Countries | 0 | - | 4.93 | 229,082 |
| Countries in their Native Language | 0 | - | 4.98 | 186,848 |
| Subdivisions by Country | 0 | - | 4.86 | 48,130 |
| Megadiverse Countries | 0 | - | 4.96 | 129,772 |
| Countries With the Most English Speakers | 0 | - | 4.90 | 117,913 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 110,118 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 49,063 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 153,849 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 148,273 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 79,540 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,079 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 64,525 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,109 |
| Hindu Countries | 0 | - | 4.85 | 45,832 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,267 |
| Countries with the Highest HDI | 0 | - | 4.95 | 133,620 |
| Straight Shot to the Arctic Circle | 0 | - | 4.90 | 71,507 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 67,906 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 95,404 |
| World Map Quiz | 0 | - | 4.88 | 56,154 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 130,775 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 85,697 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.97 | 95,498 |
| Southernmost Countries of the World | 0 | - | 4.99 | 216,467 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 97,206 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 114,836 |
| Countries With the Most Languages | 0 | - | 4.88 | 186,612 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 91,746 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 87,411 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 92,123 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 57,614 |
| Tallest Countries North to South | 0 | - | 4.85 | 114,731 |
| Widest Countries East to West | 0 | - | 4.93 | 123,649 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,915 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 164,218 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,009 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 89,490 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 123,958 |
| Countries with the Most Desert | 0 | - | 4.93 | 122,460 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 67,741 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 33,288 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 46,500 |
| Countries with Double Letters | 0 | - | 4.96 | 79,778 |
| Countries that End in N | 0 | - | 4.93 | 144,042 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 242,842 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 198,235 |
| Countries with W | 0 | - | 4.97 | 131,730 |
| Countries with Z | 0 | - | 4.98 | 273,319 |
| Countries with Letters Missing | 0 | - | 4.97 | 175,052 |
| Countries That End in U | 0 | - | 4.95 | 113,152 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 98,526 |
| Countries that End in O | 0 | - | 4.92 | 152,861 |
| Countries that End in R | 0 | - | 4.84 | 99,354 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 150,991 |
| Countries Ending in "IA" | 0 | - | 4.99 | 196,067 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 162,153 |
| Countries by Last Two Letters | 0 | - | 4.89 | 120,929 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 134,450 |
| Countries That End in Y | 0 | - | 4.91 | 181,113 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 187,560 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 126,399 |
| Countries that End in I | 0 | - | 4.92 | 116,938 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 157,030 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 91,432 |
| Countries That End in NIA | 0 | - | 4.92 | 104,440 |
| Countries That End in BIA | 0 | - | 4.92 | 141,463 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 159,966 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 113,864 |
| Countries That End in RIA | 0 | - | 4.89 | 104,790 |
