| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,621,978 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 720,550 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,335 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 383,359 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,442,457 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,101,274 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,727 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,687 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,323 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,479 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 137,863 |
| Countries with Four Letters | 0 | - | 4.99 | 422,333 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,558 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,568 |
| Landlocked Countries | 0 | - | 4.99 | 420,254 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 976,592 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,622 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 182,189 |
| Country Chain | 0 | - | 4.96 | 217,069 |
| Countries by Emojis | 0 | - | 4.99 | 239,647 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,910 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,585 |
| Islands by Country #1 | 0 | - | 4.88 | 175,268 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,512 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,861 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,714 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,766,255 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,680 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,980 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,775 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,657 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,531 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,933 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,392 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,616 |
| Himalayan Countries | 0 | - | 4.95 | 138,017 |
| Andean Countries | 0 | - | 4.95 | 84,217 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,434 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,229 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,083 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,525 |
| Danube Countries | 0 | - | 4.97 | 71,802 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,744 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,190 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,919 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,282 |
| European Landlocked Countries | 0 | - | 4.99 | 146,941 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,333 |
| Countries with the Most Species | 0 | - | 4.99 | 103,069 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,500 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,490 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,645 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,425 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,108 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,493 |
| Countries in the Alps | 0 | - | 4.87 | 117,932 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 98,866 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,654 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,532 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,426 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,273 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,821 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,446 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,318 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,061 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,681 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,553 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,409 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,052 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,330 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,343 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,484 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,158 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,669 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,780 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,058 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,613 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,084 |
| Largest Countries By Category | 0 | - | 4.97 | 157,883 |
| Countries by Countries | 0 | - | 4.97 | 62,986 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,434 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,207 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,504 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,483 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,104 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,983 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,121 |
| Island Countries | 0 | - | 4.99 | 710,301 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,047,634 |
| Northernmost Countries | 0 | - | 4.99 | 361,130 |
| Countries of South America | 0 | - | 5.00 | 924,812 |
| Countries of Oceania | 0 | - | 5.00 | 1,053,679 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,871,274 |
| "Land" Countries | 0 | - | 4.98 | 336,133 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,900 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,182 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,097 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,745 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,456 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,379,137 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,677 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,192 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,049 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,030 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,169 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,794 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,504 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 79,546 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,071 |
| Random Countries by Borders | 0 | - | 4.99 | 82,427 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,030 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 239,759 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,409 |
| Countries with Megacities | 0 | - | 4.99 | 263,165 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,248 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,220 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,539 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,246 |
| Random World Capitals on a Map | 0 | - | 4.93 | 134,580 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,318 |
| Countries by Official Language | 0 | - | 4.95 | 194,898 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,890 |
| Countries in their Native Language | 0 | - | 4.99 | 198,427 |
| Independence from Whom | 0 | - | 4.99 | 211,669 |
| Subdivisions by Country | 0 | - | 4.86 | 50,347 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,946 |
| Megadiverse Countries | 0 | - | 4.96 | 134,867 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,760 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,246 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,836 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,056 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,889 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,463 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,189 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,925 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,553 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,032 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,315 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,786 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,085 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,856 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,244 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,407 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,483 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,600 |
| World Map Quiz | 0 | - | 4.81 | 64,835 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,308 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,173 |
| Countries by Founding Story | 0 | - | 4.95 | 77,199 |
| Countries by Road Signs | 0 | - | 4.98 | 53,800 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,750 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,073 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,807 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,724 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,687 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,826 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,956 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,342 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,418 |
| Widest Countries East to West | 0 | - | 4.92 | 129,487 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,415 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,141 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,051 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,629 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,393 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,690 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,305 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,758 |
| Countries with Double Letters | 0 | - | 4.97 | 95,352 |
| Countries that End in N | 0 | - | 4.95 | 170,391 |
| Countries with Five Letters | 0 | - | 4.96 | 281,275 |
| Countries with Six Letters | 0 | - | 4.94 | 212,801 |
| Countries with W | 0 | - | 4.97 | 159,705 |
| Countries with Z | 0 | - | 4.98 | 290,610 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,971 |
| Countries That End in U | 0 | - | 4.95 | 120,514 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,985 |
| Countries that End in O | 0 | - | 4.92 | 159,284 |
| Countries that End in R | 0 | - | 4.87 | 118,804 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,568 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,584 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,316 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,214 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,827 |
| Countries That End in Y | 0 | - | 4.91 | 185,717 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,519 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,598 |
| Countries that End in I | 0 | - | 4.94 | 134,947 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,712 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,664 |
| Countries That End in NIA | 0 | - | 4.92 | 109,621 |
| Countries That End in BIA | 0 | - | 4.93 | 148,974 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,877 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,196 |
| Countries That End in RIA | 0 | - | 4.93 | 126,635 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,770 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,069 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,403 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,794 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,326 |
