| Warsaw Pact Countries | 0 | - | 4.83 | 84,258 |
| Recently Independent Countries | 0 | - | 4.98 | 157,936 |
| Independence from Whom | 0 | - | 4.99 | 209,588 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,673 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,969 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,822 |
| Countries by Founding Story | 0 | - | 4.95 | 76,488 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,888,954 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,423 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,044 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 148,741 |
| Countries by Former Name | 0 | - | 4.99 | 124,229 |
| Historical City to Country | 0 | - | 4.84 | 78,109 |
| Landlocked Countries | 0 | - | 4.99 | 413,257 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,136 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,234 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,215 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,560 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,527 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,760 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,157 |
| Former Capitals | 0 | - | 4.88 | 71,121 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,808 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,267 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,663 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 56,842 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,713,359 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,421 |
| Himalayan Countries | 0 | - | 4.95 | 135,204 |
| Andean Countries | 0 | - | 4.94 | 82,751 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,164 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,104 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,829 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,538 |
| Danube Countries | 0 | - | 4.97 | 71,044 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,705 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,498 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,390 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,315 |
| European Landlocked Countries | 0 | - | 4.99 | 145,712 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,139 |
| Countries with the Most Species | 0 | - | 4.99 | 95,222 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,284 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,190 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,354 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,938 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,548 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,916 |
| Countries in the Alps | 0 | - | 4.87 | 116,763 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,522 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,177 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,982 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,385 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,108 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,966 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,524 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,723 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,034 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,017 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,181 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,020 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,410 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,709 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,718 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,987 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,604 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,235 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,731 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,063 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,522 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,573 |
| Largest Countries By Category | 0 | - | 4.97 | 156,689 |
| Countries by Countries | 0 | - | 4.96 | 62,220 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,319 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,950 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,313 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,065 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,721 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,441 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,001 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,523 |
| Island Countries | 0 | - | 4.99 | 707,460 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,988 |
| Northernmost Countries | 0 | - | 4.99 | 357,517 |
| Countries of South America | 0 | - | 5.00 | 914,086 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,628 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,930 |
| "Land" Countries | 0 | - | 4.98 | 333,541 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,544 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,286 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 77,987 |
| Battle to Country | 0 | - | 4.91 | 52,481 |
| Countries by Independence Day | 0 | - | 4.56 | 52,594 |
| Former Countries by Capital | 0 | - | 4.45 | 127,016 |
| Former Countries | 0 | - | 4.75 | 132,654 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,983 |
| Countries with Megacities | 0 | - | 4.99 | 246,494 |
| Most Populous Countries in 1950 | 0 | - | 4.63 | 85,704 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,902 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,789 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,363 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,747 |
| Countries by Official Language | 0 | - | 4.95 | 192,695 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,018 |
| Countries in their Native Language | 0 | - | 4.99 | 196,552 |
| Subdivisions by Country | 0 | - | 4.86 | 50,047 |
| Megadiverse Countries | 0 | - | 4.97 | 133,861 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,728 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,902 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,404 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,848 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,598 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 114,722 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,114 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,200 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,731 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,491 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,394 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,469 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,484 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,643 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,003 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,463 |
| World Map Quiz | 0 | - | 4.81 | 63,441 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,469 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,281 |
| Countries by Road Signs | 0 | - | 4.98 | 53,060 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,264 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,935 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,901 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,626 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,820 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,025 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,233 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,918 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,300 |
| Widest Countries East to West | 0 | - | 4.92 | 128,567 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,209 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,160 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,544 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,664 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,585 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,001 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,045 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,563 |
| Countries with Double Letters | 0 | - | 4.97 | 93,303 |
| Countries that End in N | 0 | - | 4.94 | 156,364 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,593 |
| Countries with Six Letters | 0 | - | 4.93 | 210,279 |
| Countries with W | 0 | - | 4.97 | 158,173 |
| Countries with Z | 0 | - | 4.98 | 287,774 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,494 |
| Countries That End in U | 0 | - | 4.95 | 119,485 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,464 |
| Countries that End in O | 0 | - | 4.92 | 158,519 |
| Countries that End in R | 0 | - | 4.87 | 118,244 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,842 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,944 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,260 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,449 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,885 |
| Countries That End in Y | 0 | - | 4.90 | 185,181 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,289 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,615 |
| Countries that End in I | 0 | - | 4.94 | 134,370 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,112 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,172 |
| Countries That End in NIA | 0 | - | 4.92 | 108,966 |
| Countries That End in BIA | 0 | - | 4.92 | 147,670 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,022 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,444 |
| Countries That End in RIA | 0 | - | 4.93 | 126,052 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,968 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,110 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,483 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,860 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,317 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,907 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,083 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,607 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,457 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,799 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,080 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,762 |
| Countries that End in L | 0 | - | 4.94 | 155,686 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,965 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,975 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,490 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,265 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,403 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,651 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,031 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,884 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,127 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,320 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,479 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,593 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,158 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,407 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,288 |
