| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,613,506 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 718,730 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,020 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,717 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,132 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,121 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,194 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,311,281 |
| Landlocked Countries | 0 | - | 4.99 | 418,550 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,097,830 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,790 |
| Countries with Four Letters | 0 | - | 4.99 | 421,422 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,754,751 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,779 |
| Himalayan Countries | 0 | - | 4.94 | 137,242 |
| Andean Countries | 0 | - | 4.95 | 83,839 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,098 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,502 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,771 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,290 |
| Danube Countries | 0 | - | 4.97 | 71,612 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,490 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,011 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,575 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,640 |
| European Landlocked Countries | 0 | - | 4.99 | 146,727 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,073 |
| Countries with the Most Species | 0 | - | 4.99 | 102,865 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,207 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,418 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,574 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,415 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,275 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,634 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,952 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,331 |
| Countries in the Alps | 0 | - | 4.87 | 117,627 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,091 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,296 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,382 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,945 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,048 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,416 |
| Country Chain | 0 | - | 4.96 | 216,776 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,232 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,147 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,943 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,517 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,454 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,317 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,893 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,164 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,180 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,118 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,037 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,553 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,473 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,212 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,131 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,970 |
| Largest Countries By Category | 0 | - | 4.97 | 157,571 |
| Countries by Emojis | 0 | - | 4.99 | 238,522 |
| Countries by Countries | 0 | - | 4.96 | 62,802 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,658 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,634 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,153 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,148 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,464 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,290 |
| Islands by Country #1 | 0 | - | 4.88 | 175,059 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,339 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,689 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,597 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,856 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,848 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,421 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,481 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,952 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,870 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,235 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,872 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,685 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,500 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,922 |
| Island Countries | 0 | - | 4.99 | 709,604 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,696 |
| Northernmost Countries | 0 | - | 4.99 | 360,328 |
| Countries of South America | 0 | - | 5.00 | 922,496 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,474 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,865,423 |
| "Land" Countries | 0 | - | 4.98 | 335,713 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,524 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,912 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,909 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,617 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,270 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,964 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,450 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,058 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,384 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,421 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,704 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,489 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,875 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,959 |
| Random Countries by Borders | 0 | - | 4.99 | 82,256 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,626 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,907 |
| Countries with Megacities | 0 | - | 4.99 | 257,174 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,771 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,922 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,066 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,929 |
| Countries by Official Language | 0 | - | 4.95 | 194,582 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,456 |
| Countries in their Native Language | 0 | - | 4.99 | 198,127 |
| Independence from Whom | 0 | - | 4.99 | 211,233 |
| Subdivisions by Country | 0 | - | 4.86 | 50,273 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,641 |
| Megadiverse Countries | 0 | - | 4.96 | 134,744 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,500 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,162 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,732 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,007 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,672 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,359 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,918 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,821 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,467 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,973 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,888 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,693 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,970 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,756 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,121 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,307 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,103 |
| World Map Quiz | 0 | - | 4.81 | 64,461 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,449 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,001 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,436 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,893 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,601 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,256 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,485 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,647 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,797 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,246 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,256 |
| Widest Countries East to West | 0 | - | 4.92 | 129,338 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,376 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,921 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,983 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,487 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,179 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,514 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,222 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,723 |
| Countries with Double Letters | 0 | - | 4.97 | 95,032 |
| Countries that End in N | 0 | - | 4.95 | 169,880 |
| Countries with Five Letters | 0 | - | 4.96 | 279,787 |
| Countries with Six Letters | 0 | - | 4.94 | 212,411 |
| Countries with W | 0 | - | 4.97 | 159,489 |
| Countries with Z | 0 | - | 4.98 | 289,734 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,683 |
| Countries That End in U | 0 | - | 4.95 | 120,387 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,706 |
| Countries that End in O | 0 | - | 4.92 | 159,177 |
| Countries that End in R | 0 | - | 4.87 | 118,721 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,499 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,260 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,070 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,061 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,643 |
| Countries That End in Y | 0 | - | 4.90 | 185,633 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,183 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,385 |
| Countries that End in I | 0 | - | 4.94 | 134,846 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,035 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,557 |
| Countries That End in NIA | 0 | - | 4.92 | 109,498 |
| Countries That End in BIA | 0 | - | 4.93 | 148,813 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,675 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,023 |
| Countries That End in RIA | 0 | - | 4.93 | 126,510 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,598 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,600 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,177 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,526 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,076 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,295 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,652 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,207 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,089 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,181 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,793 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,502 |
| Countries that End in L | 0 | - | 4.94 | 156,524 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,876 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,148 |
