| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,589,014 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,262 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,185 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,278 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,894 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,249 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,937,097 |
| Landlocked Countries | 0 | - | 4.99 | 413,802 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,088,369 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,869 |
| Countries with Four Letters | 0 | - | 4.99 | 418,642 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,718,772 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,671 |
| Himalayan Countries | 0 | - | 4.95 | 135,430 |
| Andean Countries | 0 | - | 4.94 | 82,855 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,249 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,249 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,934 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,629 |
| Danube Countries | 0 | - | 4.97 | 71,097 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,782 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,551 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,523 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,443 |
| European Landlocked Countries | 0 | - | 4.99 | 145,774 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,239 |
| Countries with the Most Species | 0 | - | 4.99 | 95,253 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,379 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,204 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,374 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,368 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,968 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,476 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,583 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,964 |
| Countries in the Alps | 0 | - | 4.86 | 116,856 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,585 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,287 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,024 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,437 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,191 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,021 |
| Country Chain | 0 | - | 4.96 | 215,783 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,599 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,775 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,378 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,079 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,201 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,053 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,461 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,768 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,768 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,110 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,662 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,265 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,793 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,405 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,734 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,613 |
| Largest Countries By Category | 0 | - | 4.97 | 156,793 |
| Countries by Emojis | 0 | - | 4.99 | 236,270 |
| Countries by Countries | 0 | - | 4.96 | 62,272 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,135 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 317,136 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,418 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,969 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,338 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,788 |
| Islands by Country #1 | 0 | - | 4.87 | 174,517 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,942 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,300 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,350 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,897 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,883 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,681 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,488 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,670 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,858 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,465 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,797 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,304 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,178 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,950 |
| Island Countries | 0 | - | 4.99 | 707,705 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,720 |
| Northernmost Countries | 0 | - | 4.99 | 357,840 |
| Countries of South America | 0 | - | 5.00 | 915,157 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,954 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,849,191 |
| "Land" Countries | 0 | - | 4.98 | 333,704 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,483 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,472 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,372 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,355 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,867 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,362,845 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,715 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,648 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,653 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,910 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,415 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,498 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,616 |
| Random Countries by Borders | 0 | - | 4.99 | 81,694 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,275 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,403 |
| Countries with Megacities | 0 | - | 4.99 | 247,184 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,244 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,061 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,676 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,981 |
| Countries by Official Language | 0 | - | 4.95 | 192,809 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,179 |
| Countries in their Native Language | 0 | - | 4.99 | 196,678 |
| Independence from Whom | 0 | - | 4.99 | 209,754 |
| Subdivisions by Country | 0 | - | 4.86 | 50,075 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,803 |
| Megadiverse Countries | 0 | - | 4.97 | 133,919 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,837 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,924 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,432 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,866 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,693 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,021 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,070 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,163 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,222 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,752 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,625 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,437 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,508 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,511 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,698 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,033 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,638 |
| World Map Quiz | 0 | - | 4.81 | 63,522 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,789 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,354 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,396 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,016 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,975 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,828 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,879 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,084 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,297 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,958 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,351 |
| Widest Countries East to West | 0 | - | 4.92 | 128,624 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,219 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,253 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,580 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,702 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,656 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,069 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,054 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,589 |
| Countries with Double Letters | 0 | - | 4.97 | 93,425 |
| Countries that End in N | 0 | - | 4.94 | 156,920 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,726 |
| Countries with Six Letters | 0 | - | 4.93 | 210,400 |
| Countries with W | 0 | - | 4.97 | 158,253 |
| Countries with Z | 0 | - | 4.98 | 287,917 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,580 |
| Countries That End in U | 0 | - | 4.95 | 119,530 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,610 |
| Countries that End in O | 0 | - | 4.92 | 158,571 |
| Countries that End in R | 0 | - | 4.87 | 118,283 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,866 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,097 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,362 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,515 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,051 |
| Countries That End in Y | 0 | - | 4.90 | 185,217 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,408 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,708 |
| Countries that End in I | 0 | - | 4.94 | 134,430 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,233 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,209 |
| Countries That End in NIA | 0 | - | 4.92 | 109,019 |
| Countries That End in BIA | 0 | - | 4.92 | 147,732 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,093 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,503 |
| Countries That End in RIA | 0 | - | 4.93 | 126,097 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,025 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,230 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,541 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,903 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,387 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,943 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,142 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,668 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,534 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,823 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,171 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,840 |
| Countries that End in L | 0 | - | 4.94 | 155,754 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,338 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,990 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,528 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,316 |
