| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,616,620 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,412 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,253 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,922 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,261 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,289 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,324 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,357,040 |
| Landlocked Countries | 0 | - | 4.99 | 419,262 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,099,117 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,328 |
| Countries with Four Letters | 0 | - | 4.99 | 421,748 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,833 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,129 |
| Himalayan Countries | 0 | - | 4.95 | 137,549 |
| Andean Countries | 0 | - | 4.95 | 84,002 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,274 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,746 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,890 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,392 |
| Danube Countries | 0 | - | 4.97 | 71,701 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,610 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,095 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,708 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,785 |
| European Landlocked Countries | 0 | - | 4.99 | 146,812 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,175 |
| Countries with the Most Species | 0 | - | 4.99 | 102,949 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,326 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,438 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,740 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,331 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 174,578 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,007 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,394 |
| Countries in the Alps | 0 | - | 4.87 | 117,743 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,169 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,433 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,441 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,031 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,140 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,742 |
| Country Chain | 0 | - | 4.96 | 216,875 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,321 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,220 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,983 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,582 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,504 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,353 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,957 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,212 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,240 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,252 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,086 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,586 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,576 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,531 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,310 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,016 |
| Largest Countries By Category | 0 | - | 4.97 | 157,697 |
| Countries by Emojis | 0 | - | 4.99 | 239,017 |
| Countries by Countries | 0 | - | 4.96 | 62,867 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,767 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,045 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,258 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,172 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,360 |
| Islands by Country #1 | 0 | - | 4.88 | 175,146 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,406 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,753 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,647 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,188 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,001 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,612 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,959 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,193 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,101 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,491 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,054 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,269 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,690 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,279 |
| Island Countries | 0 | - | 4.99 | 709,902 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,415 |
| Northernmost Countries | 0 | - | 4.99 | 360,621 |
| Countries of South America | 0 | - | 5.00 | 923,322 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,688 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,352 |
| "Land" Countries | 0 | - | 4.98 | 335,871 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,659 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,991 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,981 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,669 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,345 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,421 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,537 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,106 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,686 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,659 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,876 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,604 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,109 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,008 |
| Random Countries by Borders | 0 | - | 4.99 | 82,313 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,785 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,122 |
| Countries with Megacities | 0 | - | 4.99 | 261,330 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,983 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,050 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,263 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,074 |
| Countries by Official Language | 0 | - | 4.95 | 194,694 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,618 |
| Countries in their Native Language | 0 | - | 4.99 | 198,245 |
| Independence from Whom | 0 | - | 4.99 | 211,397 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,775 |
| Megadiverse Countries | 0 | - | 4.96 | 134,790 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,586 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,203 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,766 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,743 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,400 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,025 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,000 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,057 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,735 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,801 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,169 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,339 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,286 |
| World Map Quiz | 0 | - | 4.81 | 64,641 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,740 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,065 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,580 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,967 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,683 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,424 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,556 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,710 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,859 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,291 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,317 |
| Widest Countries East to West | 0 | - | 4.92 | 129,406 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,388 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,990 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,006 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,540 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,260 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,578 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,249 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,145 |
| Countries that End in N | 0 | - | 4.95 | 170,101 |
| Countries with Five Letters | 0 | - | 4.96 | 280,551 |
| Countries with Six Letters | 0 | - | 4.94 | 212,548 |
| Countries with W | 0 | - | 4.97 | 159,549 |
| Countries with Z | 0 | - | 4.98 | 289,886 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,795 |
| Countries That End in U | 0 | - | 4.95 | 120,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,803 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,748 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,525 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,386 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,151 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,108 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,698 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,282 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,465 |
| Countries that End in I | 0 | - | 4.94 | 134,887 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,138 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,593 |
| Countries That End in NIA | 0 | - | 4.92 | 109,534 |
| Countries That End in BIA | 0 | - | 4.93 | 148,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,760 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,092 |
| Countries That End in RIA | 0 | - | 4.93 | 126,559 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,664 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,787 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,278 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,644 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,173 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,347 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,706 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,271 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,161 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,213 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,867 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,571 |
| Countries that End in L | 0 | - | 4.94 | 156,561 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,151 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,159 |
