| Countries with Double Letters | 0 | - | 4.96 | 66,455 |
| Countries that End in N | 0 | - | 4.94 | 130,836 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,355 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,206 |
| Countries with W | 0 | - | 4.97 | 121,148 |
| Countries with Z | 0 | - | 4.98 | 241,815 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,309 |
| Countries That End in U | 0 | - | 4.94 | 106,604 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.96 | 88,010 |
| Countries that End in O | 0 | - | 4.92 | 146,224 |
| Countries that End in R | 0 | - | 4.85 | 96,006 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,776 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,352 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,757 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,491 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,418 |
| Countries That End in Y | 0 | - | 4.90 | 160,735 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,503 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,700 |
| Countries that End in I | 0 | - | 4.92 | 114,107 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,282 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,751 |
| Countries That End in NIA | 0 | - | 4.93 | 100,261 |
| Countries That End in BIA | 0 | - | 4.91 | 125,242 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,286 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 108,959 |
| Countries That End in RIA | 0 | - | 4.89 | 100,406 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,666 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,445 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,518 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,320 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,241 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,451 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,815 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,308 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,667 |
| Countries that End in L | 0 | - | 4.95 | 133,259 |
| "Land" Countries | 0 | - | 4.98 | 287,725 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,655 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,055 |
| Countries With One Word and Three A's | 0 | - | 4.83 | 30,144 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 316,791 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,404,607 |
| Countries with Four Letters | 0 | - | 4.99 | 374,236 |
| Countries on the Equator | 0 | - | 4.82 | 132,030 |
| Members of the Arab League | 0 | - | 4.81 | 58,956 |
| Sahara Desert Countries | 0 | - | 4.97 | 124,969 |
| Himalayan Countries | 0 | - | 4.95 | 102,277 |
| Andean Countries | 0 | - | 4.90 | 56,813 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,640 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,518 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,825 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,489 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,675 |
| Danube Countries | 0 | - | 4.97 | 56,331 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,360 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,569 |
| Countries with the Best Passports | 0 | - | 4.86 | 70,221 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,722 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,318 |
| European Landlocked Countries | 0 | - | 4.99 | 114,808 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,686 |
| Countries with the Most Species | 0 | - | 4.99 | 89,068 |
| Countries 197 to 205 | 0 | - | 4.87 | 55,743 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,413 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,786 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,714 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,079 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,425 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,629 |
| Countries in the Alps | 0 | - | 4.82 | 101,729 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,548 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,647 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,082 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,647 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,296 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 86,807 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 88,991 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,710 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,037 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,092 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,858 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,306 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,382 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 94,897 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,444 |
| Countries with the Most Grassland | 0 | - | 4.93 | 68,914 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,421 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,910 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,903 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,311 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,163 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,914 |
| Largest Countries By Category | 0 | - | 4.96 | 143,765 |
| Countries by Countries | 0 | - | 4.96 | 54,004 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,011,413 |
| Country Flags with the Most White | 0 | - | 4.90 | 107,555 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,335 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,228 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 115,830 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,281 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,283 |
| Island Countries Quiz | 0 | - | 4.99 | 637,777 |
| Biggest Countries by Area | 0 | - | 5.00 | 923,803 |
| Northernmost Countries | 0 | - | 4.99 | 325,130 |
| Countries of South America | 0 | - | 5.00 | 782,580 |
| Countries of Oceania | 0 | - | 5.00 | 880,634 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,103,359 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,548,890 |
| Countries with J | 0 | - | 4.46 | 146,320 |
| Add A Letter - Make a Country | 0 | - | 4.79 | 67,593 |
| Countries by Consonants | 0 | - | 4.44 | 72,352 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 123,971 |
| Countries with Megacities | 0 | - | 4.99 | 194,486 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,221 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,738 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,527 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,605 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 244,758 |
| Countries by Official Language | 0 | - | 4.95 | 153,329 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,368 |
| Countries in their Native Language | 0 | - | 4.98 | 176,832 |
| Independence from Whom | 0 | - | 4.99 | 182,723 |
| Subdivisions by Country | 0 | - | 4.82 | 46,153 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 111,736 |
| Megadiverse Countries | 0 | - | 4.96 | 124,651 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 89,792 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 105,947 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,093 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 129,955 |
| Most Recently-Settled Countries | 0 | - | 4.91 | 48,567 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,473 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,246 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,454 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,943 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,747 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,760 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,297 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,458 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,863 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,683 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 79,836 |
| World Map Quiz | 0 | - | 4.90 | 48,007 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 110,248 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,666 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,184 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,023 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 106,962 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,352 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,501 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,794 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,351 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,229 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,775 |
| Widest Countries East to West | 0 | - | 4.93 | 118,629 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,662 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,783 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,070 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,709 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,567 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,439 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,235 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,831 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,644 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,425 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,036 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,024 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 156,846 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,604 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,503 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 191,848 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 139,872 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 65,384 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,613 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,842 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,340 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,300,987 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,329 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,031,580 |
| One Border Countries | 0 | - | 4.98 | 406,268 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,374 |
| Most Similar Country Names | 0 | - | 4.15 | 43,408 |
| Longest Country Name A-Z | 0 | - | 4.36 | 36,482 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,351,836 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,261 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,243 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,145 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,442 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,335 |
| Countries by National Anthem | 0 | - | 4.94 | 61,605 |
| NATO Countries Quiz | 0 | - | 4.98 | 223,272 |
| EU Countries Quiz | 0 | - | 4.99 | 225,801 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,255 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,105 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,405 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 223,870 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 215,620 |
| German-Speaking Countries | 0 | - | 4.87 | 117,101 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,249 |
| Countries with Wild Penguins | 0 | - | 4.93 | 89,606 |
