| Independence from Whom | 0 | - | 4.99 | 212,757 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,219 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,760 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,909 |
| Country by Photo of its Leader | 0 | - | 4.70 | 124,524 |
| Recently Independent Countries | 0 | - | 4.98 | 159,800 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,743 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,434 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,881 |
| Countries by Former Name | 0 | - | 4.99 | 125,666 |
| Historical City to Country | 0 | - | 4.85 | 78,875 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,778,496 |
| Landlocked Countries | 0 | - | 4.99 | 424,474 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,238 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,772 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,444 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,114 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,454 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,794 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,650 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,969 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,641 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,409 |
| Political Movements by Country | 0 | - | 4.46 | 72,715 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,040 |
| Countries of the Soviet Union | 0 | - | 4.98 | 195,424 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,148 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,611 |
| Himalayan Countries | 0 | - | 4.94 | 139,752 |
| Andean Countries | 0 | - | 4.94 | 85,176 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,359 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,620 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,925 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,218 |
| Danube Countries | 0 | - | 4.97 | 72,272 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,406 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,701 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,846 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,352 |
| European Landlocked Countries | 0 | - | 4.99 | 147,449 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,076 |
| Countries with the Most Species | 0 | - | 4.99 | 103,478 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,219 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,709 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,820 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,739 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,472 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,901 |
| Countries in the Alps | 0 | - | 4.87 | 118,579 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,297 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,588 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,861 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,884 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,805 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,135 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,159 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,746 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,335 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,058 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,789 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,658 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,447 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,678 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,770 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,510 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,518 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,517 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,482 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,187 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,834 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,425 |
| Largest Countries By Category | 0 | - | 4.97 | 158,643 |
| Countries by Countries | 0 | - | 4.96 | 63,507 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,370 |
| Battle to Country | 0 | - | 4.91 | 53,820 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,361 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,976 |
| Soviet Union Country Quiz | 0 | - | 4.91 | 81,062 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,250 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,295 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,938 |
| Island Countries | 0 | - | 4.99 | 712,051 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 162,137 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,648 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,238 |
| Northernmost Countries | 0 | - | 4.99 | 363,394 |
| Countries of South America | 0 | - | 5.00 | 930,861 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,212 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,318 |
| "Land" Countries | 0 | - | 4.98 | 338,052 |
| Countries by Independence Day | 0 | - | 4.62 | 52,842 |
| Former Countries by Capital | 0 | - | 4.45 | 127,749 |
| Former Countries | 0 | - | 4.77 | 134,123 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,658 |
| Asian Countries with the Most Christians | 0 | - | 4.86 | 97,808 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,989 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 200,388 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 121,150 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 136,755 |
| Communist Countries in History | 0 | - | 4.63 | 497,622 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,202 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,002 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,800 |
| Countries with Megacities | 0 | - | 4.99 | 266,383 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,502 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,908 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,798 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,016 |
| Countries by Official Language | 0 | - | 4.95 | 195,767 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,299 |
| Countries in their Native Language | 0 | - | 4.99 | 199,553 |
| Subdivisions by Country | 0 | - | 4.87 | 50,568 |
| Megadiverse Countries | 0 | - | 4.96 | 135,192 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,759 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,481 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,382 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,182 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,438 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,504 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,776 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,223 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,205 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,310 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,374 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,101 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,514 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,633 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,021 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,581 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,990 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,944 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,432 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,229 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,289 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,407 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,602 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,619 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,117 |
| Widest Countries East to West | 0 | - | 4.92 | 130,313 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,558 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,105 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,470 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,980 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,861 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,361 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,467 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,864 |
| Countries with Double Letters | 0 | - | 4.96 | 96,807 |
| Countries that End in N | 0 | - | 4.95 | 171,688 |
| Countries with Five Letters | 0 | - | 4.96 | 283,395 |
| Countries with Six Letters | 0 | - | 4.94 | 214,160 |
| Countries with W | 0 | - | 4.96 | 160,750 |
| Countries with Z | 0 | - | 4.98 | 292,127 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,099 |
| Countries That End in U | 0 | - | 4.95 | 121,076 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,908 |
| Countries that End in O | 0 | - | 4.92 | 159,725 |
| Countries that End in R | 0 | - | 4.87 | 119,113 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,861 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,588 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,008 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,716 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,647 |
| Countries That End in Y | 0 | - | 4.91 | 186,027 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,291 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,141 |
| Countries that End in I | 0 | - | 4.94 | 135,256 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,462 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,979 |
| Countries That End in NIA | 0 | - | 4.92 | 109,965 |
| Countries That End in BIA | 0 | - | 4.93 | 149,463 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,398 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,666 |
| Countries That End in RIA | 0 | - | 4.93 | 126,983 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,266 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,275 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,028 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,462 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,036 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,735 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,231 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,511 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,782 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,583 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,268 |
| Countries that End in L | 0 | - | 4.94 | 157,038 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,995 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,317 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,761 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,468 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,245 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,223 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,003 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,341 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,135 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,814 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,115 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,192 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,782 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,157 |
