| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,607,105 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,816,129 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,211,498 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,095,381 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,328 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,569 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,337 |
| Anagram Chain - Countries | 0 | - | 4.98 | 115,930 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,265 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,307 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,996 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,652 |
| Countries with Four Letters | 0 | - | 4.99 | 420,742 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,827 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,963 |
| Landlocked Countries | 0 | - | 4.99 | 417,256 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,152 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 170,431 |
| Country Chain | 0 | - | 4.96 | 216,532 |
| Countries by Emojis | 0 | - | 4.99 | 238,033 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,511 |
| Pixelated World Map | 0 | - | 5.00 | 142,961 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,021 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,272 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,177 |
| 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 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,745,209 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,338 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 81,737 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,936 |
| Name a Valid Country #1 | 0 | - | 4.99 | 287,481 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,372 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,314 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,445 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,509 |
| Name a Valid Country #7 | 0 | - | 4.91 | 128,423 |
| Name a Valid Country #8 | 0 | - | 4.85 | 97,797 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 717,034 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,213 |
| Himalayan Countries | 0 | - | 4.95 | 136,760 |
| Andean Countries | 0 | - | 4.95 | 83,603 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,864 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,165 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,528 |
| 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 | 148,296 |
| European Landlocked Countries | 0 | - | 4.99 | 146,195 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,876 |
| Countries with the Most Species | 0 | - | 4.99 | 102,377 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,004 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,355 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,535 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,204 |
| 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 | 117,433 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,963 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,041 |
| 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 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,071 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,043 |
| 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 | 241,363 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,749 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,874 |
| Largest Countries By Category | 0 | - | 4.97 | 157,356 |
| Countries by Countries | 0 | - | 4.96 | 62,667 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,953 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,109 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,422 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,955 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,455 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,144 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 327,540 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,093 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,212 |
| Island Countries | 0 | - | 4.99 | 709,090 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,112 |
| Northernmost Countries | 0 | - | 4.99 | 359,714 |
| Countries of South America | 0 | - | 5.00 | 920,522 |
| Countries of Oceania | 0 | - | 5.00 | 1,048,093 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,860,887 |
| "Land" Countries | 0 | - | 4.98 | 335,177 |
| 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 | 89,169 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,372,020 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 104,792 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,280 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,963 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,940 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,036 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,380 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,239 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,462 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,515 |
| Top Five Countries By Fruit Production | 0 | - | 4.96 | 78,438 |
| 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 |
| Name a Valid Island Country | 0 | - | 4.96 | 114,561 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,485 |
| Countries with Megacities | 0 | - | 4.99 | 249,418 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,340 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,668 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,667 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,639 |
| Capital Cities in Squares of an Empty World Map | 0 | - | 4.99 | 89,013 |
| Countries by Official Language | 0 | - | 4.95 | 194,237 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,058 |
| Countries in their Native Language | 0 | - | 4.99 | 197,837 |
| Independence from Whom | 0 | - | 4.99 | 210,972 |
| Subdivisions by Country | 0 | - | 4.86 | 50,223 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,447 |
| Megadiverse Countries | 0 | - | 4.96 | 134,602 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,998 |
| 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 | 93,702 |
| 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 in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,179 |
| 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 | 154,710 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,771 |
| Countries by Founding Story | 0 | - | 4.95 | 76,934 |
| Countries by Road Signs | 0 | - | 4.98 | 53,485 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,183 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,739 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,473 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,885 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,347 |
| 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 | 61,180 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,112 |
| 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 | 127,418 |
| 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 | 94,570 |
| Countries that End in N | 0 | - | 4.95 | 168,636 |
| Countries with Five Letters | 0 | - | 4.96 | 272,752 |
| Countries with Six Letters | 0 | - | 4.93 | 211,825 |
| Countries with W | 0 | - | 4.97 | 159,154 |
| Countries with Z | 0 | - | 4.98 | 289,243 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,347 |
| Countries That End in U | 0 | - | 4.95 | 120,193 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,378 |
| Countries that End in O | 0 | - | 4.92 | 159,029 |
| Countries that End in R | 0 | - | 4.87 | 118,607 |
| 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 | 169,877 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,906 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,492 |
| Countries That End in Y | 0 | - | 4.90 | 185,517 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,973 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,195 |
| Countries that End in I | 0 | - | 4.94 | 134,731 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,801 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,460 |
