| Independence from Whom | 0 | - | 4.99 | 211,136 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,567 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,315 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,838 |
| Countries by Founding Story | 0 | - | 4.95 | 76,989 |
| Landlocked Countries | 0 | - | 4.99 | 418,013 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,268,161 |
| Recently Independent Countries | 0 | - | 4.98 | 158,900 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,411 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,527 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,183 |
| Countries by Former Name | 0 | - | 4.99 | 124,836 |
| Historical City to Country | 0 | - | 4.83 | 78,392 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,528 |
| Himalayan Countries | 0 | - | 4.94 | 137,021 |
| Andean Countries | 0 | - | 4.95 | 83,729 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,979 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,343 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,653 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,223 |
| Danube Countries | 0 | - | 4.97 | 71,563 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,412 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,975 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,477 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,526 |
| European Landlocked Countries | 0 | - | 4.99 | 146,669 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,996 |
| Countries with the Most Species | 0 | - | 4.99 | 102,718 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,129 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,388 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,554 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,247 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,915 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,295 |
| Countries in the Alps | 0 | - | 4.87 | 117,541 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,035 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,187 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,355 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,888 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,991 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,383 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,158 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,109 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,912 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,473 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,433 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,293 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,850 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,117 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,140 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,993 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,992 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,517 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,403 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,818 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,996 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,926 |
| Largest Countries By Category | 0 | - | 4.97 | 157,492 |
| Countries by Countries | 0 | - | 4.96 | 62,753 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,073 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,131 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,450 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,210 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.97 | 98,562 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,240 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,805 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,242 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,023 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,014 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,085 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,109 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,375 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,005 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,208 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,429 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,635 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,366 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,236 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,140 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,349 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,609 |
| Island Countries | 0 | - | 4.99 | 709,360 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,008 |
| Northernmost Countries | 0 | - | 4.99 | 360,058 |
| Countries of South America | 0 | - | 5.00 | 921,744 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,528 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,515 |
| "Land" Countries | 0 | - | 4.98 | 335,562 |
| Former Countries by Capital | 0 | - | 4.45 | 127,315 |
| Former Countries | 0 | - | 4.75 | 133,087 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,647 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,704 |
| Countries with Megacities | 0 | - | 4.99 | 249,813 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,529 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,794 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,861 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,785 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,514 |
| Countries by Official Language | 0 | - | 4.95 | 194,462 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,286 |
| Countries in their Native Language | 0 | - | 4.99 | 198,020 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Megadiverse Countries | 0 | - | 4.96 | 134,701 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,155 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,146 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,702 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,989 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,608 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,753 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,448 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,930 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,660 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,661 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,895 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,729 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,061 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,280 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,943 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,568 |
| Battle to Country | 0 | - | 4.91 | 53,068 |
| World Map Quiz | 0 | - | 4.81 | 64,384 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,111 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,931 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,558 |
| Countries by Road Signs | 0 | - | 4.98 | 53,570 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,318 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,828 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,547 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,074 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,433 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,604 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,749 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,214 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,213 |
| Widest Countries East to West | 0 | - | 4.92 | 129,279 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,367 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,839 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,970 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,447 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,123 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,472 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,195 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,900 |
| Countries that End in N | 0 | - | 4.95 | 169,505 |
| Countries with Five Letters | 0 | - | 4.96 | 278,492 |
| Countries with Six Letters | 0 | - | 4.94 | 212,253 |
| Countries with W | 0 | - | 4.97 | 159,383 |
| Countries with Z | 0 | - | 4.98 | 289,590 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,587 |
| Countries That End in U | 0 | - | 4.95 | 120,340 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,595 |
| Countries that End in O | 0 | - | 4.92 | 159,138 |
| Countries that End in R | 0 | - | 4.87 | 118,678 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,466 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,174 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,008 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,001 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,589 |
| Countries That End in Y | 0 | - | 4.90 | 185,601 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,096 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,312 |
| Countries that End in I | 0 | - | 4.94 | 134,816 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,940 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,528 |
| Countries That End in NIA | 0 | - | 4.92 | 109,448 |
| Countries That End in BIA | 0 | - | 4.93 | 148,756 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,618 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,971 |
| Countries That End in RIA | 0 | - | 4.93 | 126,458 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,550 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,468 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,100 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,437 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,008 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,263 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,593 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,144 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,037 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,149 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,731 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,418 |
| Countries that End in L | 0 | - | 4.94 | 156,471 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,630 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,138 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,787 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,662 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,711 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,579 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,018 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,523 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,990 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,465 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,485 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,912 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,338 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,571 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,600 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,002 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,383 |
