| Independence from Whom | 0 | - | 4.99 | 212,207 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,805 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,622 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,532 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,288 |
| Recently Independent Countries | 0 | - | 4.98 | 159,519 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,318 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,863 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,396 |
| Countries by Former Name | 0 | - | 4.99 | 125,391 |
| Historical City to Country | 0 | - | 4.84 | 78,658 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,617,828 |
| Landlocked Countries | 0 | - | 4.99 | 422,423 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,914 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,544 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,321 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,945 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,356 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,659 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,435 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,792 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,573 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,091 |
| Political Movements by Country | 0 | - | 4.46 | 72,632 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,996 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,835 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,939 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,742 |
| Himalayan Countries | 0 | - | 4.95 | 138,937 |
| Andean Countries | 0 | - | 4.93 | 84,744 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,948 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,018 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,556 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,892 |
| Danube Countries | 0 | - | 4.97 | 72,075 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,094 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,476 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,413 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,895 |
| European Landlocked Countries | 0 | - | 4.99 | 147,202 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,734 |
| Countries with the Most Species | 0 | - | 4.99 | 103,283 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,852 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,623 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,741 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,579 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,276 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,715 |
| Countries in the Alps | 0 | - | 4.87 | 118,281 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,399 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,130 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,698 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,640 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,568 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,987 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,728 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,550 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,906 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,555 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,263 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,523 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,578 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,008 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,353 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,309 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,152 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,164 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,259 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,270 |
| Largest Countries By Category | 0 | - | 4.97 | 158,295 |
| Countries by Countries | 0 | - | 4.96 | 63,292 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,088 |
| Battle to Country | 0 | - | 4.91 | 53,568 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,720 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 80,882 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,925 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,633 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,621 |
| Island Countries | 0 | - | 4.99 | 711,193 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,820 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,775 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,409 |
| Northernmost Countries | 0 | - | 4.99 | 362,172 |
| Countries of South America | 0 | - | 5.00 | 927,984 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,726 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,701 |
| "Land" Countries | 0 | - | 4.98 | 337,463 |
| Countries by Independence Day | 0 | - | 4.61 | 52,785 |
| Former Countries by Capital | 0 | - | 4.45 | 127,621 |
| Former Countries | 0 | - | 4.75 | 133,958 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,302 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,527 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,790 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,867 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,843 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 135,671 |
| Communist Countries in History | 0 | - | 4.63 | 496,672 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,891 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,139 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,016 |
| Countries with Megacities | 0 | - | 4.99 | 264,860 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,849 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,533 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,108 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,612 |
| Countries by Official Language | 0 | - | 4.95 | 195,335 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,498 |
| Countries in their Native Language | 0 | - | 4.99 | 199,129 |
| Subdivisions by Country | 0 | - | 4.87 | 50,447 |
| Megadiverse Countries | 0 | - | 4.96 | 135,055 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,179 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,383 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,260 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,123 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,187 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,061 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,682 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,161 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,763 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,915 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,230 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,989 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,311 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,392 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,174 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,328 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,034 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,327 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,935 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,053 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,331 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,604 |
| Widest Countries East to West | 0 | - | 4.92 | 129,695 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,467 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,432 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,139 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,797 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,627 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,913 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,388 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,810 |
| Countries with Double Letters | 0 | - | 4.96 | 96,318 |
| Countries that End in N | 0 | - | 4.95 | 171,216 |
| Countries with Five Letters | 0 | - | 4.96 | 282,662 |
| Countries with Six Letters | 0 | - | 4.94 | 213,656 |
| Countries with W | 0 | - | 4.97 | 160,394 |
| Countries with Z | 0 | - | 4.98 | 291,562 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,763 |
| Countries That End in U | 0 | - | 4.95 | 120,881 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,528 |
| Countries that End in O | 0 | - | 4.92 | 159,538 |
| Countries that End in R | 0 | - | 4.87 | 118,981 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,752 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,171 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,735 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,502 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,425 |
| Countries That End in Y | 0 | - | 4.91 | 185,897 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,984 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,901 |
| Countries that End in I | 0 | - | 4.94 | 135,120 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,155 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,842 |
| Countries That End in NIA | 0 | - | 4.92 | 109,809 |
| Countries That End in BIA | 0 | - | 4.93 | 149,241 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,150 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,454 |
| Countries That End in RIA | 0 | - | 4.93 | 126,831 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,044 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,722 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,758 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,183 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,736 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,596 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,062 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,457 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,558 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,449 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,025 |
| Countries that End in L | 0 | - | 4.94 | 156,867 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,948 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,279 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,050 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,978 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,024 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,820 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,710 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,169 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,887 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,515 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,900 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,120 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,718 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,897 |
