| Independence from Whom | 0 | - | 4.99 | 211,005 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,476 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,283 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,727 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,709 |
| Recently Independent Countries | 0 | - | 4.98 | 158,483 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,292 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,357 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,034 |
| Countries by Former Name | 0 | - | 4.99 | 124,762 |
| Historical City to Country | 0 | - | 4.84 | 78,368 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,223,523 |
| Landlocked Countries | 0 | - | 4.99 | 417,392 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,086 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,936 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,938 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,347 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,041 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,311 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,916 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,163 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,414 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,293 |
| Political Movements by Country | 0 | - | 4.46 | 72,416 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,746,569 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,306 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,429 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,272 |
| Himalayan Countries | 0 | - | 4.95 | 136,800 |
| Andean Countries | 0 | - | 4.95 | 83,628 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,883 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,197 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,555 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,147 |
| Danube Countries | 0 | - | 4.97 | 71,500 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,331 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,915 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,329 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,352 |
| European Landlocked Countries | 0 | - | 4.99 | 146,214 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,902 |
| Countries with the Most Species | 0 | - | 4.99 | 102,480 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,029 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,361 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,540 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,210 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,864 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,246 |
| Countries in the Alps | 0 | - | 4.86 | 117,453 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,978 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,068 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,316 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,820 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,917 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,331 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,090 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,055 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,870 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,407 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,410 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,247 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,799 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,064 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,075 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,872 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,953 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,480 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,319 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,478 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,805 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,882 |
| Largest Countries By Category | 0 | - | 4.97 | 157,384 |
| Countries by Countries | 0 | - | 4.96 | 62,682 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,497 |
| Battle to Country | 0 | - | 4.91 | 53,011 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,113 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,167 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,522 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,673 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,164 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,311 |
| Island Countries | 0 | - | 4.99 | 709,159 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,054 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,357 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,343 |
| Northernmost Countries | 0 | - | 4.99 | 359,797 |
| Countries of South America | 0 | - | 5.00 | 920,763 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,462 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,449 |
| "Land" Countries | 0 | - | 4.98 | 335,284 |
| Countries by Independence Day | 0 | - | 4.61 | 52,694 |
| Former Countries by Capital | 0 | - | 4.45 | 127,289 |
| Former Countries | 0 | - | 4.75 | 133,039 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,549 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,809 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,264 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,276 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,863 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 120,289 |
| Communist Countries in History | 0 | - | 4.63 | 494,316 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,144 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,166 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,536 |
| Countries with Megacities | 0 | - | 4.99 | 249,499 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,384 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,698 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,717 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,662 |
| Countries by Official Language | 0 | - | 4.95 | 194,298 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,124 |
| Countries in their Native Language | 0 | - | 4.99 | 197,891 |
| Subdivisions by Country | 0 | - | 4.86 | 50,233 |
| Megadiverse Countries | 0 | - | 4.96 | 134,633 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,045 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,119 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,675 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,969 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,532 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,647 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,414 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,824 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,506 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,629 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,728 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,692 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,905 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,252 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,780 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,809 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,215 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,758 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,485 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,937 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,370 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,536 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,700 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,190 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,169 |
| Widest Countries East to West | 0 | - | 4.92 | 129,241 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,345 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,759 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,950 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,165 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,061 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,432 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,164 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,694 |
| Countries with Double Letters | 0 | - | 4.97 | 94,691 |
| Countries that End in N | 0 | - | 4.95 | 168,942 |
| Countries with Five Letters | 0 | - | 4.96 | 274,922 |
| Countries with Six Letters | 0 | - | 4.94 | 211,972 |
| Countries with W | 0 | - | 4.97 | 159,219 |
| Countries with Z | 0 | - | 4.98 | 289,349 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,420 |
| Countries That End in U | 0 | - | 4.95 | 120,243 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,439 |
| Countries that End in O | 0 | - | 4.92 | 159,062 |
| Countries that End in R | 0 | - | 4.87 | 118,630 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,403 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,016 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,904 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,933 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,514 |
| Countries That End in Y | 0 | - | 4.90 | 185,540 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,008 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,222 |
| Countries that End in I | 0 | - | 4.94 | 134,745 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,832 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,474 |
| Countries That End in NIA | 0 | - | 4.92 | 109,389 |
| Countries That End in BIA | 0 | - | 4.93 | 148,673 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,539 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,891 |
| Countries That End in RIA | 0 | - | 4.93 | 126,416 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,469 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,300 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,997 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,316 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,950 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,222 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,543 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,073 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,952 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,105 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,339 |
| Countries that End in L | 0 | - | 4.94 | 156,402 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,336 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,121 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,761 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,623 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,682 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,468 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,911 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,452 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,907 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,367 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,111 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,893 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,317 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,546 |
