| Independence from Whom | 0 | - | 4.99 | 210,998 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,468 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,281 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,722 |
| Countries by Founding Story | 0 | - | 4.95 | 76,942 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,221,081 |
| Recently Independent Countries | 0 | - | 4.98 | 158,479 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,287 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,351 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,025 |
| Countries by Former Name | 0 | - | 4.99 | 124,758 |
| Historical City to Country | 0 | - | 4.84 | 78,365 |
| Landlocked Countries | 0 | - | 4.99 | 417,368 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,077 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,927 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 75,936 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 91,293 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,039 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,307 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,910 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,162 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,413 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,508 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,289 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,187 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,746,244 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,260 |
| Himalayan Countries | 0 | - | 4.95 | 136,793 |
| Andean Countries | 0 | - | 4.95 | 83,626 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,881 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,185 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,552 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,144 |
| Danube Countries | 0 | - | 4.97 | 71,496 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,327 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,913 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,325 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,338 |
| European Landlocked Countries | 0 | - | 4.99 | 146,207 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,897 |
| Countries with the Most Species | 0 | - | 4.99 | 102,461 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,026 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,359 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,540 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,209 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,861 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,243 |
| Countries in the Alps | 0 | - | 4.86 | 117,449 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,976 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,065 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,312 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,816 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,914 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,329 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,086 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,053 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,869 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,404 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,408 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,247 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,796 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,063 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,072 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,865 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,948 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,478 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,314 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,458 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,794 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,881 |
| Largest Countries By Category | 0 | - | 4.97 | 157,375 |
| Countries by Countries | 0 | - | 4.96 | 62,681 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,967 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,112 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,430 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,000 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,472 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,159 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,660 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,153 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,296 |
| Island Countries | 0 | - | 4.99 | 709,145 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,307 |
| Northernmost Countries | 0 | - | 4.99 | 359,775 |
| Countries of South America | 0 | - | 5.00 | 920,716 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,372 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,861,282 |
| "Land" Countries | 0 | - | 4.98 | 335,266 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,428 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,293 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,495 |
| Battle to Country | 0 | - | 4.91 | 53,008 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,519 |
| Countries by Independence Day | 0 | - | 4.61 | 52,693 |
| Former Countries by Capital | 0 | - | 4.45 | 127,286 |
| Former Countries | 0 | - | 4.75 | 133,035 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,528 |
| Countries with Megacities | 0 | - | 4.99 | 249,484 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,375 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,688 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,707 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,656 |
| Countries by Official Language | 0 | - | 4.95 | 194,287 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,115 |
| Countries in their Native Language | 0 | - | 4.99 | 197,881 |
| Subdivisions by Country | 0 | - | 4.86 | 50,230 |
| Megadiverse Countries | 0 | - | 4.96 | 134,624 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,039 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,119 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,670 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,967 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,526 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,545 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,634 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,412 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,824 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,499 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,628 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,725 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,690 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,904 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,252 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,771 |
| World Map Quiz | 0 | - | 4.81 | 64,244 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,774 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,797 |
| Countries by Road Signs | 0 | - | 4.98 | 53,499 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,204 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,754 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,484 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,923 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,363 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,534 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,698 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,190 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,167 |
| Widest Countries East to West | 0 | - | 4.92 | 129,234 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,345 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,753 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,947 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,121 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,058 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,425 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,164 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,693 |
| Countries with Double Letters | 0 | - | 4.97 | 94,669 |
| Countries that End in N | 0 | - | 4.95 | 168,891 |
| Countries with Five Letters | 0 | - | 4.96 | 274,614 |
| Countries with Six Letters | 0 | - | 4.94 | 211,950 |
| Countries with W | 0 | - | 4.97 | 159,203 |
| Countries with Z | 0 | - | 4.98 | 289,332 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,414 |
| Countries That End in U | 0 | - | 4.95 | 120,236 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,429 |
| Countries that End in O | 0 | - | 4.92 | 159,053 |
| Countries that End in R | 0 | - | 4.87 | 118,625 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,399 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,006 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,902 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,929 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,510 |
| Countries That End in Y | 0 | - | 4.90 | 185,535 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,002 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,216 |
| Countries that End in I | 0 | - | 4.94 | 134,742 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,827 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,473 |
| Countries That End in NIA | 0 | - | 4.92 | 109,386 |
| Countries That End in BIA | 0 | - | 4.93 | 148,670 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,532 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,886 |
| Countries That End in RIA | 0 | - | 4.93 | 126,411 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,462 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,288 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,990 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,312 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,938 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,216 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,539 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,065 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,948 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,100 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,643 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,336 |
| Countries that End in L | 0 | - | 4.94 | 156,396 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,317 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,120 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,756 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,618 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,677 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,465 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,910 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,444 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,905 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,363 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,109 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,893 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,316 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,546 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,559 |
