| Independence from Whom | 0 | - | 4.99 | 185,835 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,597 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,187 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,024 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,823 |
| Countries of the World in 1900 | 0 | - | 4.88 | 66,532 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 170,852 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 128,316 |
| Countries by Former Name | 0 | - | 4.99 | 113,974 |
| Historical City to Country | 0 | - | 4.82 | 72,367 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,000,607 |
| Most Populous Countries by Year | 0 | - | 4.81 | 93,883 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,705 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,687 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,215 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,724 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 67,009 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,042 |
| Countries Settled by Vikings | 0 | - | 4.93 | 111,557 |
| Warsaw Pact Countries | 0 | - | 4.84 | 80,220 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 87,135 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 324,620 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,078,934 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,213 |
| Flags of Countries of the World in 1910 | 0 | - | 4.95 | 69,074 |
| Battle to Country | 0 | - | 4.92 | 35,568 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,389 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 355,949 |
| Members of the Arab League | 0 | - | 4.85 | 62,356 |
| Island Countries Quiz | 0 | - | 4.99 | 661,105 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,226 |
| Himalayan Countries | 0 | - | 4.94 | 105,069 |
| Andean Countries | 0 | - | 4.91 | 58,305 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,260 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,454 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,810 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,102 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,354 |
| Danube Countries | 0 | - | 4.97 | 56,678 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,723 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,869 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,316 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,422 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,614 |
| European Landlocked Countries | 0 | - | 4.99 | 115,548 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,433 |
| Countries with the Most Species | 0 | - | 4.99 | 89,541 |
| Countries 197 to 205 | 0 | - | 4.89 | 56,402 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,694 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,020 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,332 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,439 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,722 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,196 |
| Countries in the Alps | 0 | - | 4.84 | 102,720 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,376 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,281 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,627 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,319 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,030 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,610 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,682 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,178 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,338 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,694 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,471 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,628 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,695 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,551 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,015 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,523 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,206 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,375 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,424 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,598 |
| World Countries - Blind Typing | 0 | - | 5.00 | 73,043 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,315 |
| Largest Countries By Category | 0 | - | 4.96 | 144,997 |
| Countries by Countries | 0 | - | 4.96 | 54,697 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,589 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,740 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,302 |
| Biggest Countries by Area | 0 | - | 5.00 | 934,198 |
| Northernmost Countries | 0 | - | 4.99 | 327,679 |
| Countries of South America | 0 | - | 5.00 | 794,705 |
| Countries of Oceania | 0 | - | 5.00 | 895,180 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,158,800 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,575,895 |
| Countries by Independence Day Quiz | 0 | - | 4.63 | 44,492 |
| Former Countries by Capital | 0 | - | 4.44 | 103,903 |
| Former Countries | 0 | - | 4.72 | 124,668 |
| Guerrillas by Country | 0 | - | 4.45 | 38,548 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 93,734 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,791 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,904 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,393 |
| Countries with Megacities | 0 | - | 4.99 | 197,688 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,934 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,183 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,735 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,153 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,392 |
| Countries by Official Language | 0 | - | 4.96 | 172,869 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,529 |
| Countries in their Native Language | 0 | - | 4.98 | 178,480 |
| Subdivisions by Country | 0 | - | 4.82 | 46,470 |
| Megadiverse Countries | 0 | - | 4.96 | 125,385 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,568 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,745 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,408 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,679 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,175 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,083 |
| Countries in Relation to Cities #1 | 0 | - | 4.91 | 41,365 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,906 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,639 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,055 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,984 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,588 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,320 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,068,637 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,529 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 67,221 |
| World Map Quiz | 0 | - | 4.90 | 49,552 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 113,858 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,576 |
| Southernmost Countries of the World | 0 | - | 4.99 | 207,023 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,056 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,173 |
| Countries With the Most Languages | 0 | - | 4.91 | 173,957 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,415 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,702 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,423 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,047 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,539 |
| Widest Countries East to West | 0 | - | 4.93 | 119,467 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,847 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,136 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,704 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,665 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,448 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,275 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,492 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,080 |
| Countries with Double Letters | 0 | - | 4.96 | 68,579 |
| Countries that End in N | 0 | - | 4.93 | 132,910 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 230,000 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,269 |
| Countries with W | 0 | - | 4.97 | 122,873 |
| Countries with Z | 0 | - | 4.98 | 244,668 |
| Countries with Letters Missing | 0 | - | 4.97 | 167,026 |
| Countries That End in U | 0 | - | 4.95 | 107,642 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,675 |
| Countries that End in O | 0 | - | 4.92 | 147,011 |
| Countries that End in R | 0 | - | 4.85 | 96,522 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,298 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,589 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,916 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,310 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,392 |
| Countries That End in Y | 0 | - | 4.90 | 161,687 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,176 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,894 |
| Countries that End in I | 0 | - | 4.92 | 114,543 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,720 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,357 |
| Countries That End in NIA | 0 | - | 4.93 | 100,933 |
| Countries That End in BIA | 0 | - | 4.91 | 126,204 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,370 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,861 |
| Countries That End in RIA | 0 | - | 4.90 | 101,057 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,547 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 201,102 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,876 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,780 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,573 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 92,344 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,841 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,899 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,880 |
| Countries that End in L | 0 | - | 4.95 | 134,379 |
| "Land" Countries | 0 | - | 4.98 | 289,395 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 189,021 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,198 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,374 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,257 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,694 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,141 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,667 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,581 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,217 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 194,097 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,995 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,944 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,129 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,399 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,138 |
| Biggest Mongol Empire Countries | 0 | - | 4.91 | 67,484 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,399,736 |
| One Border Countries | 0 | - | 4.98 | 410,540 |
