| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,084 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,026 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,564 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,335 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,929 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,826 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,962 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,211,237 |
| Landlocked Countries | 0 | - | 4.99 | 417,255 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,376 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,328 |
| Countries with Four Letters | 0 | - | 4.99 | 420,739 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,187 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,213 |
| Himalayan Countries | 0 | - | 4.95 | 136,759 |
| Andean Countries | 0 | - | 4.95 | 83,602 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,863 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,165 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,527 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,123 |
| Danube Countries | 0 | - | 4.97 | 71,487 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,301 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,903 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,297 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,295 |
| European Landlocked Countries | 0 | - | 4.99 | 146,195 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,876 |
| Countries with the Most Species | 0 | - | 4.99 | 102,375 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,003 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,355 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,535 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,152 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,204 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 170,431 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,856 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,234 |
| Countries in the Alps | 0 | - | 4.86 | 117,432 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,963 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,040 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,803 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,900 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,322 |
| Country Chain | 0 | - | 4.96 | 216,532 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,071 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,042 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,860 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,393 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,397 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,240 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,789 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,051 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,063 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,839 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,941 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,467 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,307 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,362 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,748 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,874 |
| Largest Countries By Category | 0 | - | 4.97 | 157,355 |
| Countries by Emojis | 0 | - | 4.99 | 238,032 |
| Countries by Countries | 0 | - | 4.96 | 62,667 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,510 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,020 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,951 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,422 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,144 |
| Islands by Country #1 | 0 | - | 4.87 | 174,899 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,219 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,575 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,541 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,337 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,448 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,933 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,477 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,369 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,310 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,440 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,505 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,538 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,090 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,211 |
| Island Countries | 0 | - | 4.99 | 709,090 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,109 |
| Northernmost Countries | 0 | - | 4.99 | 359,713 |
| Countries of South America | 0 | - | 5.00 | 920,519 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,089 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,867 |
| "Land" Countries | 0 | - | 4.98 | 335,172 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,993 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,768 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,790 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,534 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,168 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,017 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,279 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,963 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,939 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,035 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,379 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,239 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,462 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,877 |
| Random Countries by Borders | 0 | - | 4.99 | 82,091 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,292 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,485 |
| Countries with Megacities | 0 | - | 4.99 | 249,414 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,337 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,667 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,665 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,637 |
| Countries by Official Language | 0 | - | 4.95 | 194,236 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,053 |
| Countries in their Native Language | 0 | - | 4.99 | 197,837 |
| Independence from Whom | 0 | - | 4.99 | 210,971 |
| Subdivisions by Country | 0 | - | 4.86 | 50,223 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,446 |
| Megadiverse Countries | 0 | - | 4.96 | 134,602 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,997 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,108 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,660 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,964 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,515 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,273 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,700 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,595 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,407 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,821 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,471 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,617 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,713 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,685 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,893 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,249 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,746 |
| World Map Quiz | 0 | - | 4.81 | 64,223 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,708 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,771 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,183 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,738 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,473 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,884 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,345 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,522 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,684 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,179 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,111 |
| Widest Countries East to West | 0 | - | 4.92 | 129,218 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,342 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,737 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,946 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,996 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,045 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,417 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,156 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,691 |
| Countries with Double Letters | 0 | - | 4.96 | 94,561 |
| Countries that End in N | 0 | - | 4.95 | 168,631 |
| Countries with Five Letters | 0 | - | 4.96 | 272,642 |
| Countries with Six Letters | 0 | - | 4.93 | 211,819 |
| Countries with W | 0 | - | 4.97 | 159,149 |
| Countries with Z | 0 | - | 4.98 | 289,238 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,343 |
| Countries That End in U | 0 | - | 4.95 | 120,191 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,376 |
| Countries that End in O | 0 | - | 4.92 | 159,027 |
| Countries that End in R | 0 | - | 4.87 | 118,606 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,384 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,958 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,875 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,906 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,491 |
| Countries That End in Y | 0 | - | 4.90 | 185,517 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,972 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,194 |
| Countries that End in I | 0 | - | 4.94 | 134,731 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,800 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
| Countries That End in NIA | 0 | - | 4.92 | 109,357 |
| Countries That End in BIA | 0 | - | 4.93 | 148,647 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,510 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,860 |
| Countries That End in RIA | 0 | - | 4.93 | 126,395 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,440 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,241 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,967 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,290 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,919 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,198 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,519 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,046 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,921 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,090 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,621 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,318 |
| Countries that End in L | 0 | - | 4.94 | 156,375 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,237 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,105 |
