| Countries in World War I | 0 | - | 4.88 | 227,349 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,170 |
| Battle to Country | 0 | - | 4.91 | 52,870 |
| Independence from Whom | 0 | - | 4.99 | 210,457 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,254 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,187 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,509 |
| Countries by Founding Story | 0 | - | 4.95 | 76,831 |
| Recently Independent Countries | 0 | - | 4.98 | 158,325 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,080 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,017 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,715 |
| Countries by Former Name | 0 | - | 4.99 | 124,635 |
| Historical City to Country | 0 | - | 4.84 | 78,300 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,132,676 |
| Countries in World War II | 0 | - | 4.54 | 907,999 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,726 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,632 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,507 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,868 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,742 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,996 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,504 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,064 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,190 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,353 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,419 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,220 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,144 |
| Political Movements by Country | 0 | - | 4.46 | 72,372 |
| Landlocked Countries | 0 | - | 4.99 | 416,256 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,737,835 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,874 |
| National Founders | 0 | - | 4.40 | 83,727 |
| Countries with the Most Catholics | 0 | - | 4.90 | 108,572 |
| Orthodox Countries | 0 | - | 4.92 | 130,856 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,386 |
| Monarchies of Europe | 0 | - | 4.90 | 97,661 |
| Monarchies of Asia | 0 | - | 4.97 | 70,805 |
| Asian Country Superlatives | 0 | - | 4.83 | 80,603 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,035 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,526 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,658 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,489 |
| Island Countries | 0 | - | 4.99 | 708,685 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,748 |
| Himalayan Countries | 0 | - | 4.95 | 136,343 |
| Andean Countries | 0 | - | 4.95 | 83,396 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,658 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,887 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,352 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,958 |
| Danube Countries | 0 | - | 4.97 | 71,357 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,153 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,815 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,078 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,026 |
| European Landlocked Countries | 0 | - | 4.99 | 146,082 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,698 |
| Countries with the Most Species | 0 | - | 4.99 | 100,020 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,843 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,312 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,488 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,130 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,785 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,155 |
| Countries in the Alps | 0 | - | 4.86 | 117,286 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,866 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,807 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,228 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,697 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,763 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,220 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,943 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,968 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,768 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,300 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,337 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,188 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,691 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,380 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,959 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,972 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,635 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,867 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,403 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,155 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,780 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,469 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,790 |
| Largest Countries By Category | 0 | - | 4.97 | 157,204 |
| Countries by Countries | 0 | - | 4.96 | 62,558 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,989 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,728 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 118,993 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 91,412 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,369,498 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,821 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,068 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,404 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,048 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,877 |
| Northernmost Countries | 0 | - | 4.99 | 359,173 |
| Countries of South America | 0 | - | 5.00 | 919,151 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,989 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,857,396 |
| "Land" Countries | 0 | - | 4.98 | 334,332 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,572 |
| Top 10 Hottest European Countries | 0 | - | 4.89 | 126,447 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,668 |
| Countries by Independence Day | 0 | - | 4.61 | 52,668 |
| Former Countries by Capital | 0 | - | 4.45 | 127,226 |
| Former Countries | 0 | - | 4.75 | 132,937 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,174 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,581 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,421 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 81,568 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,486 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,716 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 80,938 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,378 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,352 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,698 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,167 |
| Countries with Megacities | 0 | - | 4.99 | 248,716 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,031 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,485 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,402 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,437 |
| Countries by Official Language | 0 | - | 4.95 | 193,883 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,366 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 236,808 |
| Countries in their Native Language | 0 | - | 4.99 | 197,529 |
| Subdivisions by Country | 0 | - | 4.86 | 50,179 |
| Megadiverse Countries | 0 | - | 4.96 | 134,513 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,722 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,063 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,612 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,939 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,405 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,518 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,352 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,800 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,111 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,563 |
| Hindu Countries | 0 | - | 4.86 | 49,799 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,661 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,629 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,833 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,183 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,416 |
| World Map Quiz | 0 | - | 4.81 | 63,994 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,161 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,661 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 42,904 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,127 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,989 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,625 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,353 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,604 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,223 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,417 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,591 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,128 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,613 |
| Widest Countries East to West | 0 | - | 4.92 | 129,111 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,319 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,600 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,896 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,930 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,944 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,322 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,020 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,661 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,205 |
| Countries with Double Letters | 0 | - | 4.96 | 93,867 |
| Countries that End in N | 0 | - | 4.94 | 158,215 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,271 |
| Countries with Six Letters | 0 | - | 4.93 | 210,881 |
| Countries with W | 0 | - | 4.97 | 158,554 |
| Countries with Z | 0 | - | 4.98 | 288,465 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,877 |
| Countries That End in U | 0 | - | 4.95 | 119,686 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,042 |
| Countries that End in O | 0 | - | 4.92 | 158,723 |
| Countries that End in R | 0 | - | 4.87 | 118,428 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,982 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,609 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,659 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,752 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,316 |
| Countries That End in Y | 0 | - | 4.90 | 185,334 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,759 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,017 |
| Countries that End in I | 0 | - | 4.94 | 134,609 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,621 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,377 |
| Countries That End in NIA | 0 | - | 4.92 | 109,243 |
| Countries That End in BIA | 0 | - | 4.93 | 148,482 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,368 |
