| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,614,858 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,052 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,108 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,815 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,192 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,187 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,252 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,331,127 |
| Landlocked Countries | 0 | - | 4.99 | 418,896 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,098,438 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,893 |
| Countries with Four Letters | 0 | - | 4.99 | 421,570 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,756,583 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,979 |
| Himalayan Countries | 0 | - | 4.94 | 137,411 |
| Andean Countries | 0 | - | 4.95 | 83,927 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,226 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,639 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,827 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,345 |
| Danube Countries | 0 | - | 4.97 | 71,656 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,542 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,048 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,641 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,724 |
| European Landlocked Countries | 0 | - | 4.99 | 146,773 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,128 |
| Countries with the Most Species | 0 | - | 4.99 | 102,906 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,263 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,431 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,585 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,464 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,300 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,685 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,989 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,358 |
| Countries in the Alps | 0 | - | 4.87 | 117,684 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,129 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,358 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,413 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,979 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,088 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,525 |
| Country Chain | 0 | - | 4.96 | 216,815 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,279 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,182 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,964 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,549 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,476 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,335 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,919 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,187 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,204 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,173 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,060 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,570 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,521 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,346 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,222 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,993 |
| Largest Countries By Category | 0 | - | 4.97 | 157,628 |
| Countries by Emojis | 0 | - | 4.99 | 238,703 |
| Countries by Countries | 0 | - | 4.96 | 62,832 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,717 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,833 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,205 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,159 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,466 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,320 |
| Islands by Country #1 | 0 | - | 4.88 | 175,110 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,374 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,716 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,625 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 215,988 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 278,914 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,503 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,670 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,055 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,956 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,345 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,940 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,955 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,592 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,078 |
| Island Countries | 0 | - | 4.99 | 709,738 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,002 |
| Northernmost Countries | 0 | - | 4.99 | 360,446 |
| Countries of South America | 0 | - | 5.00 | 922,855 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,926 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,866,198 |
| "Land" Countries | 0 | - | 4.98 | 335,784 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,562 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,933 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,946 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,635 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,300 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,375,605 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,493 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,079 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,533 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,530 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,788 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,539 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,993 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,989 |
| Random Countries by Borders | 0 | - | 4.99 | 82,282 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,701 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,013 |
| Countries with Megacities | 0 | - | 4.99 | 259,621 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,877 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,985 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,158 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,991 |
| Countries by Official Language | 0 | - | 4.95 | 194,639 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,519 |
| Countries in their Native Language | 0 | - | 4.99 | 198,179 |
| Independence from Whom | 0 | - | 4.99 | 211,299 |
| Subdivisions by Country | 0 | - | 4.86 | 50,287 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,695 |
| Megadiverse Countries | 0 | - | 4.96 | 134,764 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,538 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,182 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,753 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,016 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,708 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,379 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,969 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,843 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,485 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,987 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,950 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,713 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,990 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,770 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,150 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,324 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,182 |
| World Map Quiz | 0 | - | 4.81 | 64,511 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,572 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,029 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,490 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,925 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,632 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,315 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,516 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,667 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,823 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,258 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,279 |
| Widest Countries East to West | 0 | - | 4.92 | 129,369 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,381 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,955 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,990 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,508 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,218 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,542 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,231 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,725 |
| Countries with Double Letters | 0 | - | 4.97 | 95,082 |
| Countries that End in N | 0 | - | 4.95 | 169,980 |
| Countries with Five Letters | 0 | - | 4.96 | 280,167 |
| Countries with Six Letters | 0 | - | 4.94 | 212,472 |
| Countries with W | 0 | - | 4.97 | 159,518 |
| Countries with Z | 0 | - | 4.98 | 289,791 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,738 |
| Countries That End in U | 0 | - | 4.95 | 120,408 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,747 |
| Countries that End in O | 0 | - | 4.92 | 159,192 |
| Countries that End in R | 0 | - | 4.87 | 118,732 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,508 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,326 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,098 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,075 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,659 |
| Countries That End in Y | 0 | - | 4.90 | 185,647 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,222 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,415 |
| Countries that End in I | 0 | - | 4.94 | 134,864 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,073 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,574 |
| Countries That End in NIA | 0 | - | 4.92 | 109,513 |
| Countries That End in BIA | 0 | - | 4.93 | 148,841 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,708 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,056 |
| Countries That End in RIA | 0 | - | 4.93 | 126,533 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,620 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,688 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,223 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,583 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,107 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,318 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,682 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,236 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,119 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,190 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,822 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,529 |
| Countries that End in L | 0 | - | 4.94 | 156,539 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,987 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,153 |
