| Countries in World War I | 0 | - | 4.88 | 222,890 |
| Axis Occupied Countries of WWII | 0 | - | 4.99 | 223,417 |
| Battle to Country | 0 | - | 4.91 | 50,434 |
| Independence from Whom | 0 | - | 4.99 | 204,857 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 127,164 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 60,790 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 90,000 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 155,025 |
| Countries of the World in 1900 | 0 | - | 4.89 | 79,672 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 188,145 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 144,202 |
| Countries by Former Name | 0 | - | 4.99 | 122,170 |
| Historical City to Country | 0 | - | 4.84 | 76,928 |
| Countries of the World Quiz | 0 | - | 5.00 | 45,540,345 |
| Countries in World War II | 0 | - | 4.52 | 883,082 |
| Most Populous Countries by Year | 0 | - | 4.82 | 106,077 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 132,189 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 73,931 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 82,105 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 65,450 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 71,632 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 94,379 |
| Countries Settled by Vikings | 0 | - | 4.93 | 118,861 |
| Countries with the Most Christians | 0 | - | 4.92 | 137,246 |
| Warsaw Pact Countries | 0 | - | 4.83 | 83,222 |
| Least Christian Countries with Exceptions | 0 | - | 4.90 | 83,907 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.94 | 63,556 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 96,156 |
| Political Movements by Country | 0 | - | 4.44 | 71,445 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 397,874 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,496,871 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,588,018 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 170,441 |
| National Founders | 0 | - | 4.39 | 83,169 |
| Catholic Countries Quiz | 0 | - | 4.81 | 210,210 |
| Countries with the Most Catholics | 0 | - | 4.90 | 104,668 |
| Orthodox Countries | 0 | - | 4.92 | 127,695 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 76,088 |
| Monarchies of Europe | 0 | - | 4.89 | 95,117 |
| Monarchies of Asia | 0 | - | 4.97 | 69,407 |
| Asian Country Superlatives | 0 | - | 4.83 | 79,249 |
| Five Countries with Most Christians by Continent | 0 | - | 4.99 | 107,938 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 366,029 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 390,990 |
| Island Countries Quiz | 0 | - | 4.99 | 699,902 |
| Sahara Desert Countries | 0 | - | 4.98 | 153,121 |
| Himalayan Countries | 0 | - | 4.95 | 128,730 |
| Andean Countries | 0 | - | 4.93 | 72,507 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 59,581 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 118,064 |
| Coffee Producing Countries | 0 | - | 4.81 | 62,898 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 62,065 |
| Danube Countries | 0 | - | 4.97 | 62,664 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 99,340 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 83,677 |
| Countries with the Worst Passports | 0 | - | 4.93 | 78,475 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 143,234 |
| European Landlocked Countries | 0 | - | 4.99 | 143,443 |
| Partially Recognized Countries | 0 | - | 4.98 | 101,999 |
| Countries with the Most Species | 0 | - | 4.99 | 93,811 |
| Countries 197 to 205 | 0 | - | 4.88 | 66,435 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 52,463 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 46,648 |
| Countries that Use the Peso | 0 | - | 4.87 | 57,703 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 71,241 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 55,338 |
| Countries in the Alps | 0 | - | 4.87 | 113,875 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 92,627 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 101,497 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 76,759 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 93,114 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 113,023 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 93,425 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 97,200 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 51,297 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 49,142 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 60,365 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 52,262 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 40,083 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 101,815 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 112,100 |
| Arctic Ocean Countries | 0 | - | 4.95 | 77,302 |
| Countries with the Most Grassland | 0 | - | 4.93 | 75,242 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 112,976 |
| Countries with the Most Climate Zones | 0 | - | 4.95 | 66,194 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 57,997 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.94 | 41,973 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 230,462 |
| World Countries - Blind Typing | 0 | - | 5.00 | 100,307 |
| Countries in Their Own Alphabet | 0 | - | 4.96 | 46,400 |
| Largest Countries By Category | 0 | - | 4.97 | 153,905 |
| African Countries with the Most Muslims | 0 | - | 4.81 | 98,826 |
| Countries by Countries | 0 | - | 4.96 | 60,314 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 193,652 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 117,809 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 111,006 |
| Top 10 Biggest Economies in the Americas | 0 | - | 4.93 | 89,052 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,313,565 |
| Country Flags with the Most White | 0 | - | 4.86 | 134,575 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,298 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 85,792 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,016,221 |
| Northernmost Countries | 0 | - | 4.99 | 347,916 |
| Countries of South America | 0 | - | 5.00 | 888,014 |
| Countries of Oceania | 0 | - | 5.00 | 1,007,070 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,786,013 |
| Top 10 Coldest European Countries | 0 | - | 4.94 | 189,708 |
| Top 10 Hottest European Countries | 0 | - | 4.88 | 123,990 |
| Top 10 Coldest Asian Countries | 0 | - | 4.95 | 121,242 |
| Countries by Independence Day | 0 | - | 4.61 | 52,218 |
| Former Countries by Capital | 0 | - | 4.45 | 125,762 |
| Former Countries | 0 | - | 4.74 | 130,720 |
| Guerrillas by Country | 0 | - | 4.43 | 40,490 |
| Countries of the Soviet Union | 0 | - | 4.98 | 192,006 |
| Country by Photo of its Leader | 0 | - | 4.79 | 121,270 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 71,228 |
| Top 10 Richest Countries in the Americas | 0 | - | 4.90 | 74,780 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 73,959 |
| Top 10 Richest Countries in Europe | 0 | - | 4.91 | 145,831 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 79,404 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 70,705 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,404,712 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 369,673 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 165,697 |
| Countries with Megacities | 0 | - | 4.99 | 225,841 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 191,972 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 109,026 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 130,912 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 76,567 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 309,540 |
| Countries by Official Language | 0 | - | 4.95 | 188,543 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 287,756 |
| Commonwealth of Nations Countries | 0 | - | 4.93 | 233,201 |
| Countries in their Native Language | 0 | - | 4.99 | 192,479 |
| Subdivisions by Country | 0 | - | 4.85 | 49,336 |
| Megadiverse Countries | 0 | - | 4.97 | 132,125 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 126,019 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,039 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 123,245 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,194 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.86 | 49,861 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 157,906 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 150,904 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 81,457 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,904 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 71,485 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 105,825 |
| Hindu Countries | 0 | - | 4.85 | 47,975 |
| Countries Furthest from the United States | 0 | - | 4.94 | 87,057 |
| Countries with the Highest HDI | 0 | - | 4.95 | 135,512 |
| Straight Shot to the Arctic Circle | 0 | - | 4.87 | 73,246 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 69,679 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 103,465 |
| World Map Quiz | 0 | - | 4.84 | 60,606 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 143,770 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 88,793 |
| Modern Day Countries of Austria-Hungary on a Map | 0 | - | 4.98 | 99,691 |
| Southernmost Countries of the World | 0 | - | 4.99 | 222,672 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 101,710 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 119,385 |
| Countries With the Most Languages | 0 | - | 4.89 | 194,525 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 107,338 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 91,136 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 96,349 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 59,742 |
| Tallest Countries North to South | 0 | - | 4.83 | 117,747 |
| Widest Countries East to West | 0 | - | 4.92 | 126,737 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,738 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 182,944 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 96,578 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 92,178 |
| Largest Countries as a Percent of Continent | 0 | - | 4.98 | 145,326 |
| Countries with the Most Desert | 0 | - | 4.93 | 125,201 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,597 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,117 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 50,142 |
| Countries with Double Letters | 0 | - | 4.97 | 88,080 |
| Countries that End in N | 0 | - | 4.93 | 151,475 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 252,613 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 205,578 |
| Countries with W | 0 | - | 4.97 | 154,160 |
| Countries with Z | 0 | - | 4.98 | 281,672 |
| Countries with Letters Missing | 0 | - | 4.97 | 180,657 |
| Countries That End in U | 0 | - | 4.95 | 117,074 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 104,821 |
| Countries that End in O | 0 | - | 4.92 | 156,515 |
| Countries that End in R | 0 | - | 4.84 | 101,341 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 153,246 |
| Countries Ending in "IA" | 0 | - | 4.99 | 202,457 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 166,492 |
| Countries by Last Two Letters | 0 | - | 4.88 | 132,486 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 138,460 |
| Countries That End in Y | 0 | - | 4.91 | 183,772 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 193,293 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.93 | 149,122 |
| Countries that End in I | 0 | - | 4.93 | 118,569 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 179,093 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 93,845 |
| Countries That End in NIA | 0 | - | 4.92 | 107,413 |
| Countries That End in BIA | 0 | - | 4.92 | 145,603 |
