| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,320 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,127,966 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,494 |
| Random Countries by Borders | 0 | - | 4.99 | 83,190 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,879 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,659,236 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,686 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,842 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,914 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,189 |
| Random Capital to Country | 0 | - | 4.99 | 2,603,969 |
| Random Country to Capital | 0 | - | 4.98 | 929,887 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,963,293 |
| Landlocked Countries | 0 | - | 4.99 | 427,184 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,048 |
| Countries with Four Letters | 0 | - | 4.99 | 426,400 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 388,901 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,428 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,811,841 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,881 |
| Himalayan Countries | 0 | - | 4.93 | 140,794 |
| Andean Countries | 0 | - | 4.94 | 85,781 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,905 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,470 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,454 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,679 |
| Danube Countries | 0 | - | 4.97 | 72,541 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,790 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,970 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,427 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,901 |
| European Landlocked Countries | 0 | - | 4.99 | 147,732 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,526 |
| Countries with the Most Species | 0 | - | 4.99 | 103,641 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,628 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,812 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,951 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,287 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,919 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,651 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,672 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,123 |
| Countries in the Alps | 0 | - | 4.87 | 118,959 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,970 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,110 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,053 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,165 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,121 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,385 |
| Country Chain | 0 | - | 4.96 | 218,647 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,581 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,985 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,508 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,308 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,950 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,825 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,664 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,918 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,015 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,133 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,726 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,393 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,830 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,263 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,474 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,607 |
| Largest Countries By Category | 0 | - | 4.97 | 159,077 |
| Countries by Emojis | 0 | - | 4.99 | 242,820 |
| Countries by Countries | 0 | - | 4.97 | 63,797 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,699 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,313 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,424 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,445 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,704 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,220 |
| Islands by Country #1 | 0 | - | 4.90 | 176,480 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,335 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,650 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,464 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,362 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,046 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,576 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,569 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,380 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,624 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,296 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,541 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,024 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,327 |
| Island Countries | 0 | - | 4.99 | 712,981 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,081 |
| Northernmost Countries | 0 | - | 4.99 | 364,567 |
| Countries of South America | 0 | - | 5.00 | 934,154 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,365 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,892,780 |
| "Land" Countries | 0 | - | 4.98 | 338,968 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,889 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,815 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,766 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,182 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,015 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,852 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,664 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,860 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,587 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,431 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,999 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,328 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,624 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,477 |
| Countries with Megacities | 0 | - | 4.99 | 267,799 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,126 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,329 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,457 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,426 |
| Countries by Official Language | 0 | - | 4.95 | 196,203 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,922 |
| Countries in their Native Language | 0 | - | 4.99 | 199,948 |
| Independence from Whom | 0 | - | 4.99 | 213,387 |
| Subdivisions by Country | 0 | - | 4.87 | 50,664 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,648 |
| Megadiverse Countries | 0 | - | 4.96 | 148,886 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,126 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,573 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,801 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,257 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,459 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,923 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,271 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,622 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,162 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,284 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,749 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,481 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,502 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,216 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,634 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,963 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,709 |
| World Map Quiz | 0 | - | 4.81 | 65,919 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,855 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,811 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,499 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,225 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,698 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,908 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,541 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,657 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,845 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,761 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,933 |
| Widest Countries East to West | 0 | - | 4.92 | 130,841 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,627 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,391 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,559 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,154 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,100 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,607 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,532 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,921 |
| Countries with Double Letters | 0 | - | 4.96 | 97,605 |
| Countries that End in N | 0 | - | 4.95 | 172,612 |
| Countries with Five Letters | 0 | - | 4.96 | 284,615 |
| Countries with Six Letters | 0 | - | 4.94 | 214,938 |
| Countries with W | 0 | - | 4.96 | 161,296 |
| Countries with Z | 0 | - | 4.98 | 292,977 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,657 |
| Countries That End in U | 0 | - | 4.95 | 121,380 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,412 |
| Countries that End in O | 0 | - | 4.92 | 160,367 |
| Countries that End in R | 0 | - | 4.87 | 119,275 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,056 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,137 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 185,364 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,174 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,711 |
| Countries That End in Y | 0 | - | 4.91 | 186,171 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,218 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,409 |
| Countries that End in I | 0 | - | 4.94 | 135,420 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,228 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,142 |
| Countries That End in NIA | 0 | - | 4.92 | 110,154 |
| Countries That End in BIA | 0 | - | 4.93 | 149,732 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,924 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,895 |
| Countries That End in RIA | 0 | - | 4.93 | 127,143 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,538 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,923 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,380 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,841 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,395 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,918 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,448 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,603 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,046 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,729 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,900 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,601 |
| Countries that End in L | 0 | - | 4.94 | 157,241 |
