| Solve the Secret Country #1 | 0 | - | 4.96 | 129,705 |
| Solve the Secret Country #2 | 0 | - | 4.91 | 87,900 |
| Anagram Chain - Countries | 0 | - | 4.98 | 96,531 |
| Countries but all Vowels are Changed to O | 0 | - | 4.84 | 34,847 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 44,530 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,848,556 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 322,819 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,918,549 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 383,983 |
| Countries with Four Letters | 0 | - | 4.99 | 375,362 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,062,547 |
| Members of the Arab League | 0 | - | 4.85 | 61,542 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,620 |
| Himalayan Countries | 0 | - | 4.94 | 104,494 |
| Andean Countries | 0 | - | 4.91 | 57,912 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,849 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,204 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,536 |
| Coffee Producing Countries | 0 | - | 4.81 | 53,975 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,218 |
| Danube Countries | 0 | - | 4.97 | 56,591 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,619 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,792 |
| Countries with the Best Passports | 0 | - | 4.87 | 71,033 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,245 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,031 |
| European Landlocked Countries | 0 | - | 4.99 | 115,061 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,230 |
| Countries with the Most Species | 0 | - | 4.99 | 89,491 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,262 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,635 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,972 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,177 |
| Top Five Countries By Category #2 | 0 | - | 4.92 | 156,964 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,367 |
| Top Five Countries By Category #3 | 0 | - | 4.87 | 142,298 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,645 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,063 |
| Countries in the Alps | 0 | - | 4.84 | 102,494 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,187 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,858 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,498 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,143 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,848 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,451 |
| Country Chain | 0 | - | 4.95 | 177,883 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,521 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,077 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,269 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,564 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,333 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,525 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,614 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,375 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,868 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,363 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,743 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,271 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,311 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,600 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,605 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,223 |
| Largest Countries By Category | 0 | - | 4.96 | 144,718 |
| Countries by Emojis | 0 | - | 4.99 | 205,125 |
| Countries by Countries | 0 | - | 4.96 | 54,544 |
| Countries With One Word And Two O's | 0 | - | 4.90 | 34,309 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,638 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,024 |
| Islands by Country #1 | 0 | - | 4.87 | 163,499 |
| Regions of Countries #1 | 0 | - | 4.96 | 149,584 |
| Regions of Countries #2 | 0 | - | 4.95 | 114,271 |
| Regions of Countries #3 | 0 | - | 4.84 | 83,562 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.91 | 256,915 |
| Name a Valid Country #3 | 0 | - | 4.98 | 208,476 |
| Name a Valid Country #1 | 0 | - | 4.99 | 226,320 |
| Name a Valid Country #2 | 0 | - | 4.98 | 193,075 |
| Name a Valid Country #4 | 0 | - | 4.96 | 200,297 |
| Name a Valid Country #5 | 0 | - | 4.98 | 145,572 |
| Name a Valid Country #6 | 0 | - | 4.92 | 87,398 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,651 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 354,841 |
| Island Countries Quiz | 0 | - | 4.99 | 659,735 |
| Biggest Countries by Area | 0 | - | 5.00 | 931,707 |
| Northernmost Countries | 0 | - | 4.99 | 326,798 |
| Countries of South America | 0 | - | 5.00 | 791,608 |
| Countries of Oceania | 0 | - | 5.00 | 891,599 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,144,264 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,568,797 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 162,062 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.92 | 67,837 |
| Five Biggest Immigrant Groups by Country #3 | 0 | - | 4.83 | 46,804 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 100,718 |
| Countries with the Most McDonald's Locations | 0 | - | 4.81 | 79,853 |
| Biggest Countries with No McDonald's | 0 | - | 4.85 | 78,573 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.87 | 86,962 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 283,346 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 207,005 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 198,059 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 168,682 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.96 | 105,801 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 95,213 |
| Random Countries by Borders | 0 | - | 4.99 | 66,333 |
| Random Name a Valid Country | 0 | - | 4.99 | 168,382 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,592 |
| Countries with Megacities | 0 | - | 4.99 | 196,784 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,171 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,736 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,077 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,695 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,445 |
| Countries by Official Language | 0 | - | 4.96 | 167,403 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 248,799 |
| Countries in their Native Language | 0 | - | 4.98 | 178,034 |
| Independence from Whom | 0 | - | 4.99 | 185,265 |
| Subdivisions by Country | 0 | - | 4.82 | 46,393 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,245 |
| Megadiverse Countries | 0 | - | 4.96 | 125,224 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,118 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,588 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,335 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,435 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,075 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,706 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,026 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,976 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,300 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,673 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,524 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,930 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,920 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,470 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,189 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 81,865 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 81,360 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,479 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,776 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,864 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,281 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,216 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,474 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,154 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,825 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,337 |
| Widest Countries East to West | 0 | - | 4.93 | 119,263 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,798 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,883 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,593 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,320 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,728 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,063 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,424 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,023 |
| Countries with Double Letters | 0 | - | 4.96 | 68,083 |
| Countries that End in N | 0 | - | 4.93 | 132,432 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,428 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,787 |
| Countries with W | 0 | - | 4.97 | 122,538 |
| Countries with Z | 0 | - | 4.98 | 244,146 |
| Countries with Letters Missing | 0 | - | 4.97 | 155,394 |
| Countries That End in U | 0 | - | 4.95 | 107,437 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,227 |
| Countries that End in O | 0 | - | 4.92 | 146,824 |
| Countries that End in R | 0 | - | 4.85 | 96,405 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,176 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,102 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,635 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,128 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,186 |
| Countries That End in Y | 0 | - | 4.90 | 161,583 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,847 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,631 |
| Countries that End in I | 0 | - | 4.92 | 114,448 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,399 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,202 |
| Countries That End in NIA | 0 | - | 4.93 | 100,757 |
| Countries That End in BIA | 0 | - | 4.91 | 125,974 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,129 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,638 |
| Countries That End in RIA | 0 | - | 4.90 | 100,882 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,351 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,468 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,540 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,418 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,231 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,139 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,614 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,758 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,583 |
| Countries that End in L | 0 | - | 4.95 | 134,192 |
| "Land" Countries | 0 | - | 4.98 | 289,010 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,672 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,163 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,203 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,121 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,526 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,651 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 165,849 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,354 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 132,622 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,694 |
