| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,615,591 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,250 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,171 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,859 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,218 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,242 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,281 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,344,616 |
| Landlocked Countries | 0 | - | 4.99 | 419,113 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,776 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,969 |
| Countries with Four Letters | 0 | - | 4.99 | 421,669 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,757,688 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,054 |
| Himalayan Countries | 0 | - | 4.94 | 137,496 |
| Andean Countries | 0 | - | 4.95 | 83,974 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,249 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,709 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,860 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,370 |
| Danube Countries | 0 | - | 4.97 | 71,682 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,578 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,068 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,683 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,754 |
| European Landlocked Countries | 0 | - | 4.99 | 146,793 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,159 |
| Countries with the Most Species | 0 | - | 4.99 | 102,926 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,293 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,436 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,597 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,492 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,319 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,715 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,000 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,373 |
| Countries in the Alps | 0 | - | 4.87 | 117,709 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,152 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,395 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,431 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,014 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,117 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,693 |
| Country Chain | 0 | - | 4.96 | 216,845 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,300 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,202 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,975 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,571 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,494 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,343 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,944 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,199 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,222 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,218 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,076 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,582 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,551 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,455 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,264 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,011 |
| Largest Countries By Category | 0 | - | 4.97 | 157,662 |
| Countries by Emojis | 0 | - | 4.99 | 238,865 |
| Countries by Countries | 0 | - | 4.96 | 62,852 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,747 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,951 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,234 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,168 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,475 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,337 |
| Islands by Country #1 | 0 | - | 4.88 | 175,126 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,394 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,739 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,635 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,112 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,954 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,556 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,812 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,122 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,031 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,427 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,995 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,118 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,648 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,177 |
| Island Countries | 0 | - | 4.99 | 709,826 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,210 |
| Northernmost Countries | 0 | - | 4.99 | 360,547 |
| Countries of South America | 0 | - | 5.00 | 923,097 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,296 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,792 |
| "Land" Countries | 0 | - | 4.98 | 335,828 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,591 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,947 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,965 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,659 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,317 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,016 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,521 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,093 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,613 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,596 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,840 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,581 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,032 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,003 |
| Random Countries by Borders | 0 | - | 4.99 | 82,296 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,746 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,075 |
| Countries with Megacities | 0 | - | 4.99 | 260,789 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,931 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,017 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,205 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,033 |
| Countries by Official Language | 0 | - | 4.95 | 194,659 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,573 |
| Countries in their Native Language | 0 | - | 4.99 | 198,214 |
| Independence from Whom | 0 | - | 4.99 | 211,348 |
| Subdivisions by Country | 0 | - | 4.86 | 50,294 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,735 |
| Megadiverse Countries | 0 | - | 4.96 | 134,779 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,563 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,191 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,762 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,022 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,727 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,390 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,000 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,851 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,492 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,996 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,025 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,726 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,003 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,789 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,163 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,332 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,234 |
| World Map Quiz | 0 | - | 4.81 | 64,563 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,677 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,046 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,534 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,939 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,656 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,363 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,532 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,687 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,841 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,272 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,296 |
| Widest Countries East to West | 0 | - | 4.92 | 129,388 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,387 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,970 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,997 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,521 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,233 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,562 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,241 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,729 |
| Countries with Double Letters | 0 | - | 4.97 | 95,117 |
| Countries that End in N | 0 | - | 4.95 | 170,039 |
| Countries with Five Letters | 0 | - | 4.96 | 280,371 |
| Countries with Six Letters | 0 | - | 4.94 | 212,516 |
| Countries with W | 0 | - | 4.97 | 159,535 |
| Countries with Z | 0 | - | 4.98 | 289,840 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,765 |
| Countries That End in U | 0 | - | 4.95 | 120,420 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,774 |
| Countries that End in O | 0 | - | 4.92 | 159,208 |
| Countries that End in R | 0 | - | 4.87 | 118,739 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,518 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,358 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,130 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,094 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,679 |
| Countries That End in Y | 0 | - | 4.90 | 185,653 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,247 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,445 |
| Countries that End in I | 0 | - | 4.94 | 134,877 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,107 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,584 |
| Countries That End in NIA | 0 | - | 4.92 | 109,523 |
| Countries That End in BIA | 0 | - | 4.93 | 148,858 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,741 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,073 |
| Countries That End in RIA | 0 | - | 4.93 | 126,547 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,648 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,739 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,255 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,619 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,139 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,339 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,692 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,252 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,142 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,207 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,844 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,557 |
| Countries that End in L | 0 | - | 4.94 | 156,547 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,080 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,157 |
