| Independence from Whom | 0 | - | 4.99 | 211,390 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,767 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,399 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,022 |
| Country by Photo of its Leader | 0 | - | 4.72 | 123,913 |
| Recently Independent Countries | 0 | - | 4.98 | 159,061 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,652 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,839 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,480 |
| Countries by Former Name | 0 | - | 4.99 | 124,951 |
| Historical City to Country | 0 | - | 4.84 | 78,451 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,355,869 |
| Landlocked Countries | 0 | - | 4.99 | 419,246 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,445 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,141 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,108 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,584 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,187 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,468 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,115 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,308 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,462 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,534 |
| Political Movements by Country | 0 | - | 4.46 | 72,479 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,733 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,467 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,617 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,126 |
| Himalayan Countries | 0 | - | 4.95 | 137,548 |
| Andean Countries | 0 | - | 4.95 | 84,001 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,271 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,742 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,889 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,391 |
| Danube Countries | 0 | - | 4.97 | 71,700 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,609 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,093 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,705 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,783 |
| European Landlocked Countries | 0 | - | 4.99 | 146,809 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,173 |
| Countries with the Most Species | 0 | - | 4.99 | 102,947 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,322 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,437 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,328 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,005 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,394 |
| Countries in the Alps | 0 | - | 4.87 | 117,738 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,168 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,431 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,440 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,027 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,138 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,739 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,318 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,219 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,983 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,580 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,503 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,351 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,956 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,211 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,237 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,252 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,084 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,564 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,520 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,299 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,015 |
| Largest Countries By Category | 0 | - | 4.97 | 157,692 |
| Countries by Countries | 0 | - | 4.96 | 62,866 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,698 |
| Battle to Country | 0 | - | 4.91 | 53,196 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,172 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,357 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,646 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,261 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,685 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,265 |
| Island Countries | 0 | - | 4.99 | 709,898 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,310 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,385 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,390 |
| Northernmost Countries | 0 | - | 4.99 | 360,617 |
| Countries of South America | 0 | - | 5.00 | 923,287 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,664 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,301 |
| "Land" Countries | 0 | - | 4.98 | 335,867 |
| Countries by Independence Day | 0 | - | 4.61 | 52,719 |
| Former Countries by Capital | 0 | - | 4.45 | 127,386 |
| Former Countries | 0 | - | 4.75 | 133,689 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,799 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,082 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,501 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,128 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,444 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 133,043 |
| Communist Countries in History | 0 | - | 4.63 | 495,095 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,742 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,842 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,119 |
| Countries with Megacities | 0 | - | 4.99 | 261,277 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,980 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,046 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,259 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,066 |
| Countries by Official Language | 0 | - | 4.95 | 194,689 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,609 |
| Countries in their Native Language | 0 | - | 4.99 | 198,244 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Megadiverse Countries | 0 | - | 4.96 | 134,790 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,585 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,202 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,766 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,741 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,000 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,050 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,733 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,797 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,168 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,337 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,277 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,065 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,574 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,964 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,681 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,421 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,552 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,706 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,859 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,289 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,316 |
| Widest Countries East to West | 0 | - | 4.92 | 129,404 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,388 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,989 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,004 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,538 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,255 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,578 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,247 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,143 |
| Countries that End in N | 0 | - | 4.95 | 170,092 |
| Countries with Five Letters | 0 | - | 4.96 | 280,532 |
| Countries with Six Letters | 0 | - | 4.94 | 212,544 |
| Countries with W | 0 | - | 4.97 | 159,549 |
| Countries with Z | 0 | - | 4.98 | 289,883 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,795 |
| Countries That End in U | 0 | - | 4.95 | 120,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,797 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,748 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,524 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,385 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,147 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,105 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,696 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,277 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,463 |
| Countries that End in I | 0 | - | 4.94 | 134,887 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,131 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,590 |
| Countries That End in NIA | 0 | - | 4.92 | 109,532 |
| Countries That End in BIA | 0 | - | 4.93 | 148,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,754 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,090 |
| Countries That End in RIA | 0 | - | 4.93 | 126,558 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,662 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,779 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,277 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,642 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,170 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,344 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,704 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,269 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,161 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,213 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,571 |
| Countries that End in L | 0 | - | 4.94 | 156,559 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,146 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,159 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,856 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,736 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,796 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,839 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,218 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,662 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,163 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,652 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,605 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,609 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,688 |
