| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,290 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,479 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,135 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,379 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,436 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,459 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,399,138 |
| Landlocked Countries | 0 | - | 4.99 | 419,739 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,174 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,214 |
| Countries with Four Letters | 0 | - | 4.99 | 422,042 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,762,288 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,336 |
| Himalayan Countries | 0 | - | 4.95 | 137,772 |
| Andean Countries | 0 | - | 4.95 | 84,103 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,341 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,879 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,971 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,449 |
| Danube Countries | 0 | - | 4.97 | 71,746 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,672 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,143 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,809 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,885 |
| European Landlocked Countries | 0 | - | 4.99 | 146,867 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,247 |
| Countries with the Most Species | 0 | - | 4.99 | 103,011 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,405 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,622 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,325 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,375 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 180,423 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,047 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,444 |
| Countries in the Alps | 0 | - | 4.87 | 117,827 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,221 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,551 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,473 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,333 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,213 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,781 |
| Country Chain | 0 | - | 4.96 | 216,983 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,377 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,262 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,628 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,525 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,375 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,995 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,262 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,284 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,367 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,119 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,627 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,662 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,766 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,454 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,044 |
| Largest Countries By Category | 0 | - | 4.97 | 157,792 |
| Countries by Emojis | 0 | - | 4.99 | 239,399 |
| Countries by Countries | 0 | - | 4.96 | 62,929 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,842 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,312 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,334 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,182 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,488 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,417 |
| Islands by Country #1 | 0 | - | 4.88 | 175,203 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,469 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,809 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,682 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,419 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,790 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,368 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,432 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,326 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,710 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,216 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 720,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,711 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,834 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,799 |
| Island Countries | 0 | - | 4.99 | 710,101 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,993 |
| Northernmost Countries | 0 | - | 4.99 | 360,883 |
| Countries of South America | 0 | - | 5.00 | 924,083 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,731 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,368 |
| "Land" Countries | 0 | - | 4.98 | 335,998 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,807 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,104 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,044 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,712 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,403 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,692 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,609 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,147 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,867 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,842 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,037 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,702 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,039 |
| Random Countries by Borders | 0 | - | 4.99 | 82,366 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,902 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,268 |
| Countries with Megacities | 0 | - | 4.99 | 262,482 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,099 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,122 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,401 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,171 |
| Countries by Official Language | 0 | - | 4.95 | 194,803 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,761 |
| Countries in their Native Language | 0 | - | 4.99 | 198,346 |
| Independence from Whom | 0 | - | 4.99 | 211,543 |
| Subdivisions by Country | 0 | - | 4.86 | 50,328 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,857 |
| Megadiverse Countries | 0 | - | 4.96 | 134,827 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,674 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,222 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,794 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,037 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,817 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,435 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,096 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,896 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,531 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,019 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,182 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,764 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,040 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,829 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,207 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,375 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,435 |
| World Map Quiz | 0 | - | 4.81 | 64,735 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,996 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,123 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,663 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,021 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,753 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,591 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,621 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,769 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,906 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,318 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,357 |
| Widest Countries East to West | 0 | - | 4.92 | 129,444 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,405 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,062 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,032 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,582 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,322 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,640 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,278 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,742 |
| Countries with Double Letters | 0 | - | 4.97 | 95,256 |
| Countries that End in N | 0 | - | 4.95 | 170,262 |
| Countries with Five Letters | 0 | - | 4.96 | 280,998 |
| Countries with Six Letters | 0 | - | 4.94 | 212,697 |
| Countries with W | 0 | - | 4.97 | 159,637 |
| Countries with Z | 0 | - | 4.98 | 290,453 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,879 |
| Countries That End in U | 0 | - | 4.95 | 120,472 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,894 |
| Countries that End in O | 0 | - | 4.92 | 159,250 |
| Countries that End in R | 0 | - | 4.87 | 118,771 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,547 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,490 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,250 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,161 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,770 |
| Countries That End in Y | 0 | - | 4.91 | 185,685 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,426 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,523 |
| Countries that End in I | 0 | - | 4.94 | 134,911 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,590 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,624 |
| Countries That End in NIA | 0 | - | 4.92 | 109,572 |
| Countries That End in BIA | 0 | - | 4.93 | 148,919 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,820 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,143 |
| Countries That End in RIA | 0 | - | 4.93 | 126,593 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,730 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,931 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,334 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,714 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,245 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,386 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,744 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,321 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,234 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,245 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,919 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,649 |
| Countries that End in L | 0 | - | 4.94 | 156,603 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,438 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,171 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,882 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,783 |
