| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,645,803 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 738,535 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,461 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,826 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,299 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,632 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,487 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,766,495 |
| Landlocked Countries | 0 | - | 4.99 | 424,273 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,110,308 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 452,688 |
| Countries with Four Letters | 0 | - | 4.99 | 425,042 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,957 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,535 |
| Himalayan Countries | 0 | - | 4.94 | 139,692 |
| Andean Countries | 0 | - | 4.94 | 85,143 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,320 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,573 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,897 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,177 |
| Danube Countries | 0 | - | 4.97 | 72,253 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,387 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,684 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,810 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,300 |
| European Landlocked Countries | 0 | - | 4.99 | 147,431 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,048 |
| Countries with the Most Species | 0 | - | 4.99 | 103,457 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,179 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,701 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,813 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,688 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,728 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,095 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,456 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,880 |
| Countries in the Alps | 0 | - | 4.87 | 118,549 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,227 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,559 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,844 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,855 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,777 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,117 |
| Country Chain | 0 | - | 4.96 | 218,152 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,994 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,713 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,330 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,048 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,782 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,650 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,428 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,666 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,757 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,455 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,504 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,466 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,457 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,112 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,782 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,412 |
| Largest Countries By Category | 0 | - | 4.97 | 158,605 |
| Countries by Emojis | 0 | - | 4.99 | 241,367 |
| Countries by Countries | 0 | - | 4.96 | 63,485 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,411 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,067 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,058 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,359 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,638 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,958 |
| Islands by Country #1 | 0 | - | 4.90 | 176,108 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,090 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,411 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,280 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 218,330 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,539 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,427 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,216 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,500 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,542 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,442 |
| Name a Valid Country #6 | 0 | - | 4.95 | 143,287 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,848 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,244 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,808 |
| Island Countries | 0 | - | 4.99 | 711,978 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,015 |
| Northernmost Countries | 0 | - | 4.99 | 363,320 |
| Countries of South America | 0 | - | 5.00 | 930,583 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,991 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,816 |
| "Land" Countries | 0 | - | 4.98 | 338,008 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,550 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,581 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,523 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,995 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,779 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,203 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,226 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,513 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 237,663 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,617 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,333 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,725 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,443 |
| Random Countries by Borders | 0 | - | 4.99 | 82,896 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,235 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,724 |
| Countries with Megacities | 0 | - | 4.99 | 266,247 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,449 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,865 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,742 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,977 |
| Countries by Official Language | 0 | - | 4.95 | 195,744 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,260 |
| Countries in their Native Language | 0 | - | 4.99 | 199,518 |
| Independence from Whom | 0 | - | 4.99 | 212,700 |
| Subdivisions by Country | 0 | - | 4.87 | 50,553 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,177 |
| Megadiverse Countries | 0 | - | 4.96 | 135,181 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,738 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,474 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,371 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,178 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,417 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,737 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,857 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,497 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,769 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,219 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,153 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,296 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,361 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,083 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,506 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,618 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,960 |
| World Map Quiz | 0 | - | 4.81 | 65,417 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,510 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,560 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,945 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,926 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,413 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,172 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,269 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,388 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,585 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,612 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,924 |
| Widest Countries East to West | 0 | - | 4.92 | 130,291 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,555 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,082 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,455 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,967 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,845 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,345 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,460 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,860 |
| Countries with Double Letters | 0 | - | 4.96 | 96,771 |
| Countries that End in N | 0 | - | 4.95 | 171,657 |
| Countries with Five Letters | 0 | - | 4.96 | 283,349 |
| Countries with Six Letters | 0 | - | 4.94 | 214,115 |
| Countries with W | 0 | - | 4.96 | 160,723 |
| Countries with Z | 0 | - | 4.98 | 292,088 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,069 |
| Countries That End in U | 0 | - | 4.95 | 121,064 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,870 |
| Countries that End in O | 0 | - | 4.92 | 159,715 |
| Countries that End in R | 0 | - | 4.87 | 119,101 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,849 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,553 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,983 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,697 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,626 |
| Countries That End in Y | 0 | - | 4.91 | 186,018 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,262 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,120 |
| Countries that End in I | 0 | - | 4.94 | 135,245 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,438 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,964 |
| Countries That End in NIA | 0 | - | 4.92 | 109,951 |
| Countries That End in BIA | 0 | - | 4.93 | 149,441 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,375 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,969 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,259 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,215 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,010 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,443 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,007 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,724 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,223 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,505 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,763 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,571 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,561 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,257 |
| Countries that End in L | 0 | - | 4.94 | 157,021 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,919 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,314 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,285 |
