| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,274 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 718,917 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,071 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,777 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,170 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,161 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,220 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,324,174 |
| Landlocked Countries | 0 | - | 4.99 | 418,779 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,177 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,847 |
| Countries with Four Letters | 0 | - | 4.99 | 421,515 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,755,880 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,936 |
| Himalayan Countries | 0 | - | 4.94 | 137,363 |
| Andean Countries | 0 | - | 4.95 | 83,904 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,201 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,610 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,812 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,330 |
| Danube Countries | 0 | - | 4.97 | 71,640 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,525 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,039 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,613 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,697 |
| European Landlocked Countries | 0 | - | 4.99 | 146,754 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,107 |
| Countries with the Most Species | 0 | - | 4.99 | 102,892 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,243 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,428 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,581 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,447 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,291 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,664 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,972 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,348 |
| Countries in the Alps | 0 | - | 4.87 | 117,660 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,114 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,333 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,400 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,964 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,072 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,442 |
| Country Chain | 0 | - | 4.96 | 216,801 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,259 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,172 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,956 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,538 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,468 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,332 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,908 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,178 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,198 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,144 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,053 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,562 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,502 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,297 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,190 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,987 |
| Largest Countries By Category | 0 | - | 4.97 | 157,611 |
| Countries by Emojis | 0 | - | 4.99 | 238,597 |
| Countries by Countries | 0 | - | 4.96 | 62,824 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,700 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,765 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,183 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,154 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,465 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,308 |
| Islands by Country #1 | 0 | - | 4.88 | 175,091 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,362 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,708 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,618 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,961 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,891 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,467 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,600 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,020 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,921 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,299 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,912 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,828 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,558 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,011 |
| Island Countries | 0 | - | 4.99 | 709,677 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,884 |
| Northernmost Countries | 0 | - | 4.99 | 360,392 |
| Countries of South America | 0 | - | 5.00 | 922,696 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,768 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,899 |
| "Land" Countries | 0 | - | 4.98 | 335,761 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,545 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,923 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,931 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,626 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,278 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,381 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,475 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,072 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,484 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,485 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,757 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,517 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,946 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,977 |
| Random Countries by Borders | 0 | - | 4.99 | 82,272 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,666 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,975 |
| Countries with Megacities | 0 | - | 4.99 | 258,738 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,848 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,964 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,130 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,968 |
| Countries by Official Language | 0 | - | 4.95 | 194,609 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,489 |
| Countries in their Native Language | 0 | - | 4.99 | 198,154 |
| Independence from Whom | 0 | - | 4.99 | 211,269 |
| Subdivisions by Country | 0 | - | 4.86 | 50,278 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,673 |
| Megadiverse Countries | 0 | - | 4.96 | 134,756 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,528 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,177 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,741 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,010 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,691 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,367 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,950 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,833 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,471 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,983 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,916 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,702 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,982 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,762 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,141 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,315 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,149 |
| World Map Quiz | 0 | - | 4.81 | 64,497 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,537 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,017 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,472 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,911 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,626 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,293 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,503 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,663 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,816 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,254 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,272 |
| Widest Countries East to West | 0 | - | 4.92 | 129,352 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,378 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,938 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,988 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,500 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,204 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,531 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,225 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,724 |
| Countries with Double Letters | 0 | - | 4.97 | 95,064 |
| Countries that End in N | 0 | - | 4.95 | 169,940 |
| Countries with Five Letters | 0 | - | 4.96 | 280,021 |
| Countries with Six Letters | 0 | - | 4.94 | 212,447 |
| Countries with W | 0 | - | 4.97 | 159,506 |
| Countries with Z | 0 | - | 4.98 | 289,772 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,714 |
| Countries That End in U | 0 | - | 4.95 | 120,401 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,729 |
| Countries that End in O | 0 | - | 4.92 | 159,187 |
| Countries that End in R | 0 | - | 4.87 | 118,727 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,504 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,307 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,089 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,070 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,655 |
| Countries That End in Y | 0 | - | 4.90 | 185,643 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,205 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,405 |
| Countries that End in I | 0 | - | 4.94 | 134,857 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,051 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,567 |
| Countries That End in NIA | 0 | - | 4.92 | 109,504 |
| Countries That End in BIA | 0 | - | 4.93 | 148,829 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,693 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,039 |
| Countries That End in RIA | 0 | - | 4.93 | 126,523 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,608 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,648 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,202 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,557 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,092 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,312 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,670 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,219 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,107 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,187 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,807 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,519 |
| Countries that End in L | 0 | - | 4.94 | 156,534 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,942 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,152 |
