| Countries by Former Name | 0 | - | 4.99 | 125,945 |
| Independence from Whom | 0 | - | 4.99 | 213,340 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,618 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,911 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,245 |
| Countries by Founding Story | 0 | - | 4.95 | 77,892 |
| Cities by Former Name | 0 | - | 4.83 | 92,161 |
| Recently Independent Countries | 0 | - | 4.98 | 160,473 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,129 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,012 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,384 |
| Historical City to Country | 0 | - | 4.85 | 79,087 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,948,931 |
| Landlocked Countries | 0 | - | 4.99 | 426,989 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,810,495 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,562 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,986 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,596 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,268 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,563 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,913 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,846 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,794 |
| Himalayan Countries | 0 | - | 4.93 | 140,712 |
| Andean Countries | 0 | - | 4.94 | 85,743 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,867 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,411 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,425 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,646 |
| Danube Countries | 0 | - | 4.97 | 72,521 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,746 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,944 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,385 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,839 |
| European Landlocked Countries | 0 | - | 4.99 | 147,710 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,488 |
| Countries with the Most Species | 0 | - | 4.99 | 103,628 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,592 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,151 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,804 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,939 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,904 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,660 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,109 |
| Countries in the Alps | 0 | - | 4.87 | 118,930 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,922 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,070 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,044 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,144 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,094 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,363 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,547 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,972 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,497 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,291 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,941 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,818 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,655 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,904 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,999 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,092 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,703 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,214 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,805 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,182 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,419 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,597 |
| Largest Countries By Category | 0 | - | 4.97 | 159,039 |
| Countries by Countries | 0 | - | 4.97 | 63,786 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,394 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,719 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,440 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,677 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,701 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,719 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,960 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,330 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,516 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,199 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,347 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,979 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,196 |
| Island Countries | 0 | - | 4.99 | 712,900 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,842 |
| Northernmost Countries | 0 | - | 4.99 | 364,470 |
| Countries of South America | 0 | - | 5.00 | 933,912 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,971 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,118 |
| "Land" Countries | 0 | - | 4.98 | 338,889 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,332 |
| Countries by Independence Day | 0 | - | 4.62 | 52,872 |
| Former Countries by Capital | 0 | - | 4.45 | 127,871 |
| Former Countries | 0 | - | 4.77 | 134,303 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,244 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,573 |
| Battle to Country | 0 | - | 4.91 | 54,074 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,271 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,429 |
| Countries with Megacities | 0 | - | 4.99 | 267,689 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,076 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,290 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,416 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,404 |
| Countries by Official Language | 0 | - | 4.95 | 196,166 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,871 |
| Countries in their Native Language | 0 | - | 4.99 | 199,915 |
| Subdivisions by Country | 0 | - | 4.87 | 50,653 |
| Megadiverse Countries | 0 | - | 4.96 | 148,142 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,093 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,569 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,783 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,248 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,426 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,608 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,146 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,712 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,466 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,491 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,201 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,621 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,948 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,649 |
| World Map Quiz | 0 | - | 4.81 | 65,887 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,746 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,782 |
| Countries by Road Signs | 0 | - | 4.98 | 54,427 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,448 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,201 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,671 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,850 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,528 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,634 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,830 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,750 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,911 |
| Widest Countries East to West | 0 | - | 4.92 | 130,812 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,624 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,360 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,548 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,136 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,076 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,590 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,530 |
| Countries that End in N | 0 | - | 4.95 | 172,552 |
| Countries with Five Letters | 0 | - | 4.96 | 284,523 |
| Countries with Six Letters | 0 | - | 4.94 | 214,873 |
| Countries with W | 0 | - | 4.96 | 161,252 |
| Countries with Z | 0 | - | 4.98 | 292,904 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,612 |
| Countries That End in U | 0 | - | 4.95 | 121,357 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,364 |
| Countries that End in O | 0 | - | 4.92 | 160,347 |
| Countries that End in R | 0 | - | 4.87 | 119,261 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,043 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,088 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 184,331 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,123 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,614 |
| Countries That End in Y | 0 | - | 4.91 | 186,158 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,135 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,385 |
| Countries that End in I | 0 | - | 4.94 | 135,403 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,163 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,123 |
| Countries That End in NIA | 0 | - | 4.92 | 110,139 |
| Countries That End in BIA | 0 | - | 4.93 | 149,703 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,902 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,872 |
| Countries That End in RIA | 0 | - | 4.93 | 127,123 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,518 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,878 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,343 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,802 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,357 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,900 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,425 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,590 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,021 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,719 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,871 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,565 |
| Countries that End in L | 0 | - | 4.94 | 157,224 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,456 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,372 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,859 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,141 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,526 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,609 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,272 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,507 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,389 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,153 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,302 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,287 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,965 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,870 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,336 |
