| Countries with Double Letters | 0 | - | 4.96 | 67,320 |
| Countries that End in N | 0 | - | 4.94 | 131,776 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,509 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,048 |
| Countries with W | 0 | - | 4.97 | 121,981 |
| Countries with Z | 0 | - | 4.98 | 243,190 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,872 |
| Countries That End in U | 0 | - | 4.94 | 107,178 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,620 |
| Countries that End in O | 0 | - | 4.92 | 146,555 |
| Countries that End in R | 0 | - | 4.86 | 96,231 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,976 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,303 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,086 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,758 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 128,700 |
| Countries That End in Y | 0 | - | 4.90 | 161,362 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,888 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,054 |
| Countries that End in I | 0 | - | 4.92 | 114,248 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,703 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,942 |
| Countries That End in NIA | 0 | - | 4.93 | 100,452 |
| Countries That End in BIA | 0 | - | 4.91 | 125,519 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,568 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,216 |
| Countries That End in RIA | 0 | - | 4.89 | 100,577 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,912 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,191 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,906 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,732 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,604 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,697 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,117 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,495 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,992 |
| Countries that End in L | 0 | - | 4.95 | 133,532 |
| "Land" Countries | 0 | - | 4.98 | 288,209 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,008 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,100 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,353 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 318,957 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,569,453 |
| Countries with Four Letters | 0 | - | 4.99 | 374,672 |
| Countries on the Equator | 0 | - | 4.83 | 133,359 |
| Members of the Arab League | 0 | - | 4.83 | 59,861 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,544 |
| Himalayan Countries | 0 | - | 4.95 | 102,937 |
| Andean Countries | 0 | - | 4.90 | 57,211 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 58,054 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,680 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,033 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,648 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,841 |
| Danube Countries | 0 | - | 4.97 | 56,409 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,448 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,645 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,543 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,913 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,553 |
| European Landlocked Countries | 0 | - | 4.99 | 114,903 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,890 |
| Countries with the Most Species | 0 | - | 4.99 | 89,118 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,952 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,499 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,858 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,853 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,181 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,505 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,781 |
| Countries in the Alps | 0 | - | 4.83 | 102,010 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,804 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,080 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,213 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,843 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,494 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,168 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,186 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,849 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,118 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,268 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,015 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,387 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,471 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,084 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,595 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,086 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,909 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,033 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,044 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,670 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,734 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,027 |
| Largest Countries By Category | 0 | - | 4.96 | 144,092 |
| Countries by Countries | 0 | - | 4.96 | 54,217 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,030,973 |
| Country Flags with the Most White | 0 | - | 4.90 | 117,633 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,453 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,552 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 116,072 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 178,624 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 339,077 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,580 |
| Island Countries Quiz | 0 | - | 4.99 | 639,687 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,647 |
| Northernmost Countries | 0 | - | 4.99 | 325,714 |
| Countries of South America | 0 | - | 5.00 | 785,628 |
| Countries of Oceania | 0 | - | 5.00 | 884,579 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,118,593 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,556,421 |
| Countries with J | 0 | - | 4.56 | 170,436 |
| Add A Letter - Make a Country | 0 | - | 4.79 | 67,757 |
| Countries by Consonants | 0 | - | 4.44 | 72,528 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,494 |
| Countries with Megacities | 0 | - | 4.99 | 195,256 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,895 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,078 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,995 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,941 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,714 |
| Countries by Official Language | 0 | - | 4.95 | 153,741 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 247,283 |
| Countries in their Native Language | 0 | - | 4.98 | 177,252 |
| Independence from Whom | 0 | - | 4.99 | 184,136 |
| Subdivisions by Country | 0 | - | 4.82 | 46,251 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,550 |
| Megadiverse Countries | 0 | - | 4.96 | 124,889 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,247 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,118 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,177 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,282 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,841 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,109 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,427 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,605 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,135 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,189 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,913 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,591 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,544 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,129 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,855 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,644 |
| World Map Quiz | 0 | - | 4.90 | 48,359 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 111,275 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,926 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,634 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,295 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,262 |
| Countries With the Most Languages | 0 | - | 4.90 | 172,009 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,693 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 71,024 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,669 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,426 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,975 |
| Widest Countries East to West | 0 | - | 4.93 | 118,853 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,722 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,088 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,179 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,931 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,272 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,676 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,307 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,906 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,894 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,860 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,216 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,691 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 162,945 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,895 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,920 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,395 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,213 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,572 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,754 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,000 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,680 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,304,385 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,932 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,041,824 |
| One Border Countries | 0 | - | 4.98 | 407,240 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,591 |
| Most Similar Country Names | 0 | - | 4.15 | 43,486 |
| Longest Country Name A-Z | 0 | - | 4.36 | 36,649 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,365,892 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,545 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,812 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,391 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,578 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,574 |
| Countries by National Anthem | 0 | - | 4.94 | 61,686 |
| NATO Countries Quiz | 0 | - | 4.98 | 224,098 |
| EU Countries Quiz | 0 | - | 4.99 | 226,521 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,881 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,257 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,784 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 224,716 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 216,379 |
| German-Speaking Countries | 0 | - | 4.88 | 117,230 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,428 |
