| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,928 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,536 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,064 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,880 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,075 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,999 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,617,435 |
| Landlocked Countries | 0 | - | 4.99 | 422,417 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,106,196 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,670 |
| Countries with Four Letters | 0 | - | 4.99 | 423,527 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,918 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,741 |
| Himalayan Countries | 0 | - | 4.95 | 138,935 |
| Andean Countries | 0 | - | 4.93 | 84,743 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,945 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,012 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,555 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,891 |
| Danube Countries | 0 | - | 4.97 | 72,075 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,094 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,476 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,412 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,892 |
| European Landlocked Countries | 0 | - | 4.99 | 147,202 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,734 |
| Countries with the Most Species | 0 | - | 4.99 | 103,281 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,852 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,622 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,741 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,146 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,578 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,462 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,275 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,714 |
| Countries in the Alps | 0 | - | 4.87 | 118,281 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,394 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,127 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,698 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,640 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,567 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,987 |
| Country Chain | 0 | - | 4.96 | 217,704 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,728 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,549 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,904 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,555 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,263 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,523 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,576 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,008 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,353 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,304 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,150 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,163 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,257 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,269 |
| Largest Countries By Category | 0 | - | 4.97 | 158,295 |
| Countries by Emojis | 0 | - | 4.99 | 240,543 |
| Countries by Countries | 0 | - | 4.96 | 63,292 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,148 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,881 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,750 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,718 |
| Islands by Country #1 | 0 | - | 4.90 | 175,557 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,714 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,099 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,865 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 217,507 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,765 |
| Name a Valid Country #1 | 0 | - | 4.99 | 291,507 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,614 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,768 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,774 |
| Name a Valid Country #6 | 0 | - | 4.94 | 130,036 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 723,112 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,919 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,633 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,619 |
| Island Countries | 0 | - | 4.99 | 711,192 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,405 |
| Northernmost Countries | 0 | - | 4.99 | 362,172 |
| Countries of South America | 0 | - | 5.00 | 927,979 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,721 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,683 |
| "Land" Countries | 0 | - | 4.98 | 337,460 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,209 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,375 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,305 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,879 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,627 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,761 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,984 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,372 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,787 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,695 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,701 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,181 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,243 |
| Random Countries by Borders | 0 | - | 4.99 | 82,687 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,498 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,016 |
| Countries with Megacities | 0 | - | 4.99 | 264,858 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,849 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,533 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,108 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,612 |
| Countries by Official Language | 0 | - | 4.95 | 195,334 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,498 |
| Countries in their Native Language | 0 | - | 4.99 | 199,128 |
| Independence from Whom | 0 | - | 4.99 | 212,206 |
| Subdivisions by Country | 0 | - | 4.87 | 50,447 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,804 |
| Megadiverse Countries | 0 | - | 4.96 | 135,054 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,179 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,383 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,260 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,122 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,187 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,621 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,531 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,059 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,681 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,762 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,915 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,229 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,989 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,311 |
| World Map Quiz | 0 | - | 4.81 | 65,152 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,504 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,392 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,174 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,326 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,033 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,326 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,935 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,053 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,331 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,604 |
| Widest Countries East to West | 0 | - | 4.92 | 129,694 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,467 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,430 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,138 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,797 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,627 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,913 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,388 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,810 |
| Countries with Double Letters | 0 | - | 4.96 | 96,316 |
| Countries that End in N | 0 | - | 4.95 | 171,211 |
| Countries with Five Letters | 0 | - | 4.96 | 282,661 |
| Countries with Six Letters | 0 | - | 4.94 | 213,655 |
| Countries with W | 0 | - | 4.97 | 160,393 |
| Countries with Z | 0 | - | 4.98 | 291,560 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,763 |
| Countries That End in U | 0 | - | 4.95 | 120,881 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,526 |
| Countries that End in O | 0 | - | 4.92 | 159,538 |
| Countries that End in R | 0 | - | 4.87 | 118,981 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,752 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,170 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,735 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,501 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,424 |
| Countries That End in Y | 0 | - | 4.91 | 185,896 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,984 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,900 |
| Countries that End in I | 0 | - | 4.94 | 135,120 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,154 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,842 |
| Countries That End in NIA | 0 | - | 4.92 | 109,808 |
| Countries That End in BIA | 0 | - | 4.93 | 149,241 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,149 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,454 |
| Countries That End in RIA | 0 | - | 4.93 | 126,831 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,044 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,721 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,757 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,182 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,735 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,596 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,061 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,457 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,558 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,449 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,327 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,025 |
| Countries that End in L | 0 | - | 4.94 | 156,867 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,948 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,279 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,049 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,978 |
