| Independence from Whom | 0 | - | 4.99 | 185,769 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,558 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,174 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,983 |
| Country by Photo of its Leader | 0 | - | 4.79 | 115,322 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,795 |
| Countries of the World in 1900 | 0 | - | 4.88 | 66,489 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 170,801 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 128,265 |
| Historical City to Country | 0 | - | 4.82 | 72,354 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,985,399 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 324,448 |
| Most Populous Countries by Year | 0 | - | 4.81 | 93,841 |
| First Countries to Reach 5 Million People | 0 | - | 4.90 | 109,680 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.86 | 68,672 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 76,192 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.91 | 53,706 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.92 | 66,994 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 87,024 |
| Countries Settled by Vikings | 0 | - | 4.93 | 111,526 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,077,239 |
| Warsaw Pact Countries | 0 | - | 4.84 | 80,203 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 87,116 |
| Political Movements by Country | 0 | - | 4.46 | 68,570 |
| Countries of the Soviet Union | 0 | - | 4.98 | 184,953 |
| Most Populous Countries in 1900 | 0 | - | 4.92 | 162,180 |
| Members of the Arab League | 0 | - | 4.85 | 62,262 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,163 |
| Himalayan Countries | 0 | - | 4.94 | 104,999 |
| Andean Countries | 0 | - | 4.91 | 58,257 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,209 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,428 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,787 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,085 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,338 |
| Danube Countries | 0 | - | 4.97 | 56,665 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,708 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,861 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,279 |
| Countries with the Worst Passports | 0 | - | 4.88 | 49,394 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,591 |
| European Landlocked Countries | 0 | - | 4.99 | 115,533 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,416 |
| Countries with the Most Species | 0 | - | 4.99 | 89,538 |
| Countries 197 to 205 | 0 | - | 4.89 | 56,392 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,690 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,020 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,311 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,433 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,713 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,175 |
| Countries in the Alps | 0 | - | 4.84 | 102,705 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,352 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,245 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,612 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,299 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,008 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,589 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,661 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,171 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,335 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,683 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,460 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,611 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,685 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,528 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,001 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,505 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,151 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,367 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,418 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,512 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,991 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,303 |
| Largest Countries By Category | 0 | - | 4.96 | 144,970 |
| Countries by Countries | 0 | - | 4.96 | 54,676 |
| Battle to Country | 0 | - | 4.92 | 35,505 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,267 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 74,585 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,326 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 355,847 |
| Island Countries Quiz | 0 | - | 4.99 | 660,982 |
| Neutral European Countries of WWII | 0 | - | 4.92 | 148,100 |
| Biggest Countries by Area | 0 | - | 5.00 | 933,928 |
| Northernmost Countries | 0 | - | 4.99 | 327,401 |
| Countries of South America | 0 | - | 5.00 | 794,330 |
| Countries of Oceania | 0 | - | 5.00 | 894,772 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,157,162 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,575,143 |
| Countries by Independence Day Quiz | 0 | - | 4.63 | 44,488 |
| Former Countries by Capital | 0 | - | 4.44 | 103,884 |
| Former Countries | 0 | - | 4.72 | 124,646 |
| Guerrillas by Country | 0 | - | 4.45 | 38,539 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 93,704 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 84,678 |
| African Countries with the Most Christians | 0 | - | 4.92 | 67,436 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 179,018 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 109,661 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.88 | 101,889 |
| Communist Countries in History | 0 | - | 4.63 | 455,817 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,475 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,847 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,128 |
| Countries with Megacities | 0 | - | 4.99 | 197,559 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,815 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,109 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 95,626 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,054 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,250 |
| Countries by Official Language | 0 | - | 4.96 | 172,788 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,470 |
| Countries in their Native Language | 0 | - | 4.98 | 178,438 |
| Subdivisions by Country | 0 | - | 4.82 | 46,460 |
| Megadiverse Countries | 0 | - | 4.96 | 125,368 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,538 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,725 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,398 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,653 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,157 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,072 |
| Countries in Relation to Cities #1 | 0 | - | 4.91 | 41,362 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,886 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,630 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,037 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,977 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,576 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,304 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,067,659 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,453 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,553 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,966 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,038 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,149 |
| Countries With the Most Languages | 0 | - | 4.91 | 173,896 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,393 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,686 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,395 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,030 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,519 |
| Widest Countries East to West | 0 | - | 4.93 | 119,445 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,840 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,107 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,697 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,648 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,428 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,250 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,482 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,076 |
| Countries with Double Letters | 0 | - | 4.96 | 68,553 |
| Countries that End in N | 0 | - | 4.93 | 132,885 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,961 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,241 |
| Countries with W | 0 | - | 4.97 | 122,848 |
| Countries with Z | 0 | - | 4.98 | 244,627 |
| Countries with Letters Missing | 0 | - | 4.97 | 166,914 |
| Countries That End in U | 0 | - | 4.95 | 107,629 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,656 |
| Countries that End in O | 0 | - | 4.92 | 147,001 |
| Countries that End in R | 0 | - | 4.85 | 96,518 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,292 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,553 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,889 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,291 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,378 |
| Countries That End in Y | 0 | - | 4.90 | 161,679 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,146 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,869 |
| Countries that End in I | 0 | - | 4.92 | 114,534 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,684 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,349 |
| Countries That End in NIA | 0 | - | 4.93 | 100,919 |
| Countries That End in BIA | 0 | - | 4.91 | 126,186 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,348 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,839 |
| Countries That End in RIA | 0 | - | 4.90 | 101,041 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,534 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 201,039 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,839 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,733 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,542 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 92,330 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,892 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,859 |
| Countries that End in L | 0 | - | 4.95 | 134,364 |
| "Land" Countries | 0 | - | 4.98 | 289,360 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,994 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,196 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,356 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,245 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,677 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,091 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,604 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,561 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,189 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 194,056 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,974 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,936 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,119 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,378 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,122 |
