| Countries in World War I | 0 | - | 4.88 | 228,478 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 229,380 |
| Battle to Country | 0 | - | 4.91 | 53,535 |
| Independence from Whom | 0 | - | 4.99 | 212,147 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,762 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,605 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,499 |
| Countries by Founding Story | 0 | - | 4.95 | 77,389 |
| Recently Independent Countries | 0 | - | 4.98 | 159,490 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,271 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,770 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,336 |
| Countries by Former Name | 0 | - | 4.99 | 125,361 |
| Historical City to Country | 0 | - | 4.84 | 78,641 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,597,035 |
| Countries in World War II | 0 | - | 4.54 | 914,841 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,883 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,517 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,307 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,925 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,340 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,646 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,417 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,767 |
| Countries with the Most Christians | 0 | - | 4.92 | 143,609 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,568 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 88,524 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,646 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,050 |
| Political Movements by Country | 0 | - | 4.46 | 72,622 |
| Landlocked Countries | 0 | - | 4.99 | 422,150 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,077 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,920 |
| National Founders | 0 | - | 4.40 | 83,883 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,796 |
| Orthodox Countries | 0 | - | 4.92 | 132,256 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,063 |
| Monarchies of Europe | 0 | - | 4.90 | 98,354 |
| Monarchies of Asia | 0 | - | 4.97 | 71,227 |
| Asian Country Superlatives | 0 | - | 4.84 | 81,025 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 112,024 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,714 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,554 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,437 |
| Island Countries | 0 | - | 4.99 | 711,109 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,565 |
| Himalayan Countries | 0 | - | 4.94 | 138,827 |
| Andean Countries | 0 | - | 4.93 | 84,661 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,863 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,901 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,492 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,839 |
| Danube Countries | 0 | - | 4.97 | 72,036 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,044 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,444 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,351 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,833 |
| European Landlocked Countries | 0 | - | 4.99 | 147,165 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,680 |
| Countries with the Most Species | 0 | - | 4.99 | 103,264 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,795 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,603 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,729 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,556 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,247 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,685 |
| Countries in the Alps | 0 | - | 4.87 | 118,234 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,225 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,065 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,674 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,615 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,542 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,961 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,696 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,514 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,192 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,868 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,667 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,537 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,242 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,267 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,493 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,544 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,954 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,332 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,010 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,118 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,038 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,178 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,249 |
| Largest Countries By Category | 0 | - | 4.97 | 158,248 |
| Countries by Countries | 0 | - | 4.96 | 63,253 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,813 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,819 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,511 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 92,387 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,138 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,711 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,297 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,571 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,690 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,108 |
| Northernmost Countries | 0 | - | 4.99 | 362,041 |
| Countries of South America | 0 | - | 5.00 | 927,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,307 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,895 |
| "Land" Countries | 0 | - | 4.98 | 337,394 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 193,358 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 127,265 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 123,488 |
| Countries by Independence Day | 0 | - | 4.61 | 52,779 |
| Former Countries by Capital | 0 | - | 4.45 | 127,603 |
| Former Countries | 0 | - | 4.75 | 133,932 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,803 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,266 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,800 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 84,445 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,435 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 150,015 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,419 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,951 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,463 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,036 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,943 |
| Countries with Megacities | 0 | - | 4.99 | 264,656 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,774 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,495 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,038 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,565 |
| Countries by Official Language | 0 | - | 4.95 | 195,286 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,420 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,693 |
| Countries in their Native Language | 0 | - | 4.99 | 199,078 |
| Subdivisions by Country | 0 | - | 4.86 | 50,437 |
| Megadiverse Countries | 0 | - | 4.96 | 135,028 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,123 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,368 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,245 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,112 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,161 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,044 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,669 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,152 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,701 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,895 |
| Hindu Countries | 0 | - | 4.86 | 50,307 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,217 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,975 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,362 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,503 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,238 |
| World Map Quiz | 0 | - | 4.81 | 65,117 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,375 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,367 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,379 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 104,089 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,125 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,305 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,016 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,251 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,916 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,028 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,315 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,450 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,587 |
| Widest Countries East to West | 0 | - | 4.92 | 129,666 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,462 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,396 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,126 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,779 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,612 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,884 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,378 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,801 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 54,056 |
| Countries with Double Letters | 0 | - | 4.96 | 96,262 |
| Countries that End in N | 0 | - | 4.95 | 171,149 |
| Countries with Five Letters | 0 | - | 4.96 | 282,533 |
| Countries with Six Letters | 0 | - | 4.94 | 213,585 |
| Countries with W | 0 | - | 4.97 | 160,342 |
| Countries with Z | 0 | - | 4.98 | 291,490 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,719 |
| Countries That End in U | 0 | - | 4.95 | 120,862 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,477 |
| Countries that End in O | 0 | - | 4.92 | 159,516 |
| Countries that End in R | 0 | - | 4.87 | 118,974 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,734 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,122 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,704 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,482 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,407 |
| Countries That End in Y | 0 | - | 4.91 | 185,881 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,932 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,866 |
| Countries that End in I | 0 | - | 4.94 | 135,101 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,124 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,826 |
| Countries That End in NIA | 0 | - | 4.92 | 109,791 |
| Countries That End in BIA | 0 | - | 4.93 | 149,222 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,132 |
