| Countries in World War I | 0 | - | 4.88 | 227,876 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 228,753 |
| Battle to Country | 0 | - | 4.91 | 53,186 |
| Independence from Whom | 0 | - | 4.99 | 211,368 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,745 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,396 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,007 |
| Countries by Founding Story | 0 | - | 4.95 | 77,090 |
| Recently Independent Countries | 0 | - | 4.98 | 159,044 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,625 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,812 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,450 |
| Countries by Former Name | 0 | - | 4.99 | 124,939 |
| Historical City to Country | 0 | - | 4.84 | 78,447 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,349,001 |
| Countries in World War II | 0 | - | 4.54 | 911,195 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,426 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,130 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,103 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,558 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,180 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,456 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,103 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,299 |
| Countries with the Most Christians | 0 | - | 4.92 | 142,859 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,456 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 87,936 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,850 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,513 |
| Political Movements by Country | 0 | - | 4.46 | 72,474 |
| Landlocked Countries | 0 | - | 4.99 | 419,170 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,986 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,611 |
| National Founders | 0 | - | 4.40 | 83,798 |
| Countries with the Most Catholics | 0 | - | 4.90 | 109,155 |
| Orthodox Countries | 0 | - | 4.92 | 131,373 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,688 |
| Monarchies of Europe | 0 | - | 4.90 | 97,988 |
| Monarchies of Asia | 0 | - | 4.97 | 71,002 |
| Asian Country Superlatives | 0 | - | 4.84 | 80,792 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 111,522 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,171 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,661 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,206 |
| Island Countries | 0 | - | 4.99 | 709,848 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,078 |
| Himalayan Countries | 0 | - | 4.95 | 137,514 |
| Andean Countries | 0 | - | 4.95 | 83,985 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,256 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,730 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,877 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,378 |
| Danube Countries | 0 | - | 4.97 | 71,688 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,594 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,084 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,689 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,762 |
| European Landlocked Countries | 0 | - | 4.99 | 146,799 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,165 |
| Countries with the Most Species | 0 | - | 4.99 | 102,934 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,303 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,320 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,003 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,384 |
| Countries in the Alps | 0 | - | 4.87 | 117,717 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,159 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,406 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,434 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,021 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,126 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,728 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,304 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,208 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,977 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,572 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,496 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,348 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,947 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,785 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,206 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,227 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,230 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,080 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,583 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,557 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,474 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,270 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,012 |
| Largest Countries By Category | 0 | - | 4.97 | 157,670 |
| Countries by Countries | 0 | - | 4.96 | 62,856 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,098 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,430 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 132,844 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.94 | 91,997 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,166 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,238 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,476 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,340 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,275 |
| Northernmost Countries | 0 | - | 4.99 | 360,564 |
| Countries of South America | 0 | - | 5.00 | 923,172 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,492 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,994 |
| "Land" Countries | 0 | - | 4.98 | 335,837 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 192,971 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 126,829 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 122,883 |
| Countries by Independence Day | 0 | - | 4.61 | 52,715 |
| Former Countries by Capital | 0 | - | 4.45 | 127,376 |
| Former Countries | 0 | - | 4.75 | 133,681 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,458 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,898 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,581 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.93 | 83,603 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 76,161 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 149,516 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,164 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,729 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,582 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,805 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,086 |
| Countries with Megacities | 0 | - | 4.99 | 260,993 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,947 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,024 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,223 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,040 |
| Countries by Official Language | 0 | - | 4.95 | 194,672 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,587 |
| Commonwealth of Nations Countries | 0 | - | 4.94 | 237,221 |
| Countries in their Native Language | 0 | - | 4.99 | 198,218 |
| Subdivisions by Country | 0 | - | 4.86 | 50,295 |
| Megadiverse Countries | 0 | - | 4.96 | 134,784 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,572 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,194 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,762 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,024 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,728 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,854 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,496 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,998 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,033 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,727 |
| Hindu Countries | 0 | - | 4.86 | 50,032 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,006 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,791 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,165 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,334 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,251 |
| World Map Quiz | 0 | - | 4.81 | 64,574 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,697 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,052 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,117 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 103,529 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,549 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,947 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,667 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,382 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,537 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,692 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,847 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,277 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,303 |
| Widest Countries East to West | 0 | - | 4.92 | 129,394 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,387 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,978 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,998 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,523 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,242 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,569 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,245 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,730 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,597 |
| Countries with Double Letters | 0 | - | 4.97 | 95,121 |
| Countries that End in N | 0 | - | 4.95 | 170,055 |
| Countries with Five Letters | 0 | - | 4.96 | 280,425 |
| Countries with Six Letters | 0 | - | 4.94 | 212,525 |
| Countries with W | 0 | - | 4.97 | 159,539 |
| Countries with Z | 0 | - | 4.98 | 289,849 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,779 |
| Countries That End in U | 0 | - | 4.95 | 120,424 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,783 |
| Countries that End in O | 0 | - | 4.92 | 159,211 |
| Countries that End in R | 0 | - | 4.87 | 118,742 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,518 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,369 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,134 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,099 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,684 |
| Countries That End in Y | 0 | - | 4.91 | 185,654 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,252 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,454 |
| Countries that End in I | 0 | - | 4.94 | 134,881 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,110 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,586 |
| Countries That End in NIA | 0 | - | 4.92 | 109,525 |
| Countries That End in BIA | 0 | - | 4.93 | 148,863 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,746 |
