| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,629,946 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 722,166 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,182 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,765 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,710 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,873 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,842 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,549,378 |
| Landlocked Countries | 0 | - | 4.99 | 421,547 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,104,316 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 451,354 |
| Countries with Four Letters | 0 | - | 4.99 | 423,106 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,775,678 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,234 |
| Himalayan Countries | 0 | - | 4.95 | 138,522 |
| Andean Countries | 0 | - | 4.93 | 84,499 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,687 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,675 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,317 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,720 |
| Danube Countries | 0 | - | 4.97 | 71,955 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,953 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,371 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,214 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,680 |
| European Landlocked Countries | 0 | - | 4.99 | 147,081 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,549 |
| Countries with the Most Species | 0 | - | 4.99 | 103,191 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,687 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,557 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,700 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,942 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,508 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 183,187 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,189 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,608 |
| Countries in the Alps | 0 | - | 4.87 | 118,140 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,809 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,961 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,615 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,554 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,442 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,912 |
| Country Chain | 0 | - | 4.96 | 217,318 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,621 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,454 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,152 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,803 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,625 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,488 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,179 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,428 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,479 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,789 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,273 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 62,958 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,991 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,722 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,971 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,182 |
| Largest Countries By Category | 0 | - | 4.97 | 158,133 |
| Countries by Emojis | 0 | - | 4.99 | 240,190 |
| Countries by Countries | 0 | - | 4.96 | 63,144 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,053 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 321,486 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,626 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,266 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,553 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,634 |
| Islands by Country #1 | 0 | - | 4.88 | 175,413 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,607 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,985 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,784 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 217,214 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,697 |
| Name a Valid Country #3 | 0 | - | 4.99 | 263,477 |
| Name a Valid Country #1 | 0 | - | 4.99 | 290,851 |
| Name a Valid Country #2 | 0 | - | 4.98 | 251,256 |
| Name a Valid Country #4 | 0 | - | 4.97 | 256,376 |
| Name a Valid Country #5 | 0 | - | 4.99 | 207,459 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,818 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,224 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,387 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,950 |
| Island Countries | 0 | - | 4.99 | 710,894 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,321 |
| Northernmost Countries | 0 | - | 4.99 | 361,770 |
| Countries of South America | 0 | - | 5.00 | 926,729 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,111 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,875,901 |
| "Land" Countries | 0 | - | 4.98 | 337,205 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,096 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,301 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,234 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,833 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,566 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,382,626 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,863 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,303 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 236,522 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 225,449 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,508 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,044 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,169 |
| Random Countries by Borders | 0 | - | 4.99 | 82,575 |
| Random Name a Valid Country | 0 | - | 4.99 | 205,317 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,781 |
| Countries with Megacities | 0 | - | 4.99 | 264,303 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,639 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,406 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,900 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,476 |
| Countries by Official Language | 0 | - | 4.95 | 195,172 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,251 |
| Countries in their Native Language | 0 | - | 4.99 | 198,969 |
| Independence from Whom | 0 | - | 4.99 | 211,983 |
| Subdivisions by Country | 0 | - | 4.86 | 50,410 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,653 |
| Megadiverse Countries | 0 | - | 4.96 | 134,976 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,008 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,326 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,152 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,091 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,061 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,571 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,403 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,002 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,624 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,122 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,602 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,851 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,177 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,939 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,330 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,469 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,050 |
| World Map Quiz | 0 | - | 4.81 | 65,033 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,045 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,307 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,003 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,231 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,954 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,092 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,841 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,972 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,263 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,415 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,538 |
| Widest Countries East to West | 0 | - | 4.92 | 129,605 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,439 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,334 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,105 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,737 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,548 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,819 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,359 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,791 |
| Countries with Double Letters | 0 | - | 4.96 | 96,122 |
| Countries that End in N | 0 | - | 4.95 | 171,008 |
| Countries with Five Letters | 0 | - | 4.96 | 282,230 |
| Countries with Six Letters | 0 | - | 4.94 | 213,437 |
| Countries with W | 0 | - | 4.97 | 160,248 |
| Countries with Z | 0 | - | 4.98 | 291,316 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,607 |
| Countries That End in U | 0 | - | 4.95 | 120,800 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,371 |
| Countries that End in O | 0 | - | 4.92 | 159,476 |
| Countries that End in R | 0 | - | 4.87 | 118,939 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,699 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,985 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,625 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,425 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,347 |
| Countries That End in Y | 0 | - | 4.91 | 185,844 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,831 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,799 |
| Countries that End in I | 0 | - | 4.94 | 135,057 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,011 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,785 |
| Countries That End in NIA | 0 | - | 4.92 | 109,739 |
| Countries That End in BIA | 0 | - | 4.93 | 149,149 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,053 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,380 |
| Countries That End in RIA | 0 | - | 4.93 | 126,773 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,972 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,475 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,637 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,030 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,595 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,545 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,981 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,430 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,479 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,392 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,230 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,923 |
| Countries that End in L | 0 | - | 4.94 | 156,786 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,498 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,247 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,993 |
