| Independence from Whom | 0 | - | 4.99 | 211,262 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,666 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,364 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,944 |
| Recently Independent Countries | 0 | - | 4.98 | 158,992 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,546 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,707 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 150,362 |
| Countries by Former Name | 0 | - | 4.99 | 124,901 |
| Historical City to Country | 0 | - | 4.84 | 78,426 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,320,859 |
| 2016 News Stories - Name the Country | 0 | - | 4.45 | 23,383 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,363 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,087 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,067 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,402 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,152 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,429 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,068 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,264 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,440 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 68,793 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,468 |
| Landlocked Countries | 0 | - | 4.99 | 418,716 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,582 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,566 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,653 |
| Battle to Country | 0 | - | 4.91 | 53,140 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,796 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,549 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,988 |
| Island Countries | 0 | - | 4.99 | 709,663 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,901 |
| Himalayan Countries | 0 | - | 4.94 | 137,338 |
| Andean Countries | 0 | - | 4.95 | 83,885 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,176 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,583 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,796 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,318 |
| Danube Countries | 0 | - | 4.97 | 71,629 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,514 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,032 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,602 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,680 |
| European Landlocked Countries | 0 | - | 4.99 | 146,747 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,100 |
| Countries with the Most Species | 0 | - | 4.99 | 102,885 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,237 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,426 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,580 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,288 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,969 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,345 |
| Countries in the Alps | 0 | - | 4.87 | 117,647 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,109 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,324 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,393 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,959 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,068 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,430 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,251 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,165 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,951 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,533 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,466 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,327 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,905 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,175 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,192 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,138 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,049 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,560 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,493 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,278 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,172 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,983 |
| Largest Countries By Category | 0 | - | 4.97 | 157,604 |
| Countries by Countries | 0 | - | 4.96 | 62,819 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,265 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,176 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,153 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,304 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,838 |
| Northernmost Countries | 0 | - | 4.99 | 360,380 |
| Countries of South America | 0 | - | 5.00 | 922,642 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,673 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,758 |
| "Land" Countries | 0 | - | 4.98 | 335,750 |
| Countries by Independence Day | 0 | - | 4.61 | 52,708 |
| Former Countries by Capital | 0 | - | 4.45 | 127,358 |
| Former Countries | 0 | - | 4.75 | 133,139 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,710 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,009 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,651 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,962 |
| Countries with Megacities | 0 | - | 4.99 | 258,383 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,831 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,955 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,114 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,962 |
| Countries by Official Language | 0 | - | 4.95 | 194,602 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,474 |
| Countries in their Native Language | 0 | - | 4.99 | 198,148 |
| Subdivisions by Country | 0 | - | 4.86 | 50,278 |
| Megadiverse Countries | 0 | - | 4.96 | 134,753 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,524 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,175 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,739 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,008 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,686 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,831 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,471 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,982 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,908 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,702 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,978 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,760 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,137 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,314 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,136 |
| Countries in the Ottoman Empire | 0 | - | 4.89 | 72,558 |
| World Map Quiz | 0 | - | 4.81 | 64,492 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,523 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,013 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,466 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,906 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,620 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,284 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,496 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,657 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,812 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,251 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,268 |
| Widest Countries East to West | 0 | - | 4.92 | 129,349 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,377 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,937 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,986 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,499 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,198 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,526 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,224 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,054 |
| Countries that End in N | 0 | - | 4.95 | 169,927 |
| Countries with Five Letters | 0 | - | 4.96 | 279,959 |
| Countries with Six Letters | 0 | - | 4.94 | 212,437 |
| Countries with W | 0 | - | 4.97 | 159,500 |
| Countries with Z | 0 | - | 4.98 | 289,762 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,704 |
| Countries That End in U | 0 | - | 4.95 | 120,399 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,723 |
| Countries that End in O | 0 | - | 4.92 | 159,186 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,502 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,292 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,084 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,067 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,653 |
| Countries That End in Y | 0 | - | 4.90 | 185,642 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,198 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,398 |
| Countries that End in I | 0 | - | 4.94 | 134,856 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,047 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,566 |
| Countries That End in NIA | 0 | - | 4.92 | 109,502 |
| Countries That End in BIA | 0 | - | 4.93 | 148,826 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,690 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,033 |
| Countries That End in RIA | 0 | - | 4.93 | 126,519 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,607 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,635 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,197 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,542 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,091 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,305 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,666 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,217 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,103 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,187 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,804 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,514 |
| Countries that End in L | 0 | - | 4.94 | 156,530 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,923 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,826 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,710 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,756 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,748 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,136 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,593 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,095 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,586 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,567 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,942 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,590 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,647 |
| Biggest Mongol Empire Countries | 0 | - | 4.89 | 81,145 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,821,904 |
| One Border Countries | 0 | - | 4.98 | 467,583 |
