| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,617,897 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,688 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,362 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,027 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,325 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,351 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,393 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,375,864 |
| Landlocked Countries | 0 | - | 4.99 | 419,492 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,099,527 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 449,843 |
| Countries with Four Letters | 0 | - | 4.99 | 421,878 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,337 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,220 |
| Himalayan Countries | 0 | - | 4.95 | 137,662 |
| Andean Countries | 0 | - | 4.95 | 84,058 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,304 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,806 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,923 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,420 |
| Danube Countries | 0 | - | 4.97 | 71,723 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,638 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,114 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,748 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,822 |
| European Landlocked Countries | 0 | - | 4.99 | 146,838 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,206 |
| Countries with the Most Species | 0 | - | 4.99 | 102,982 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,363 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,443 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,609 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,102 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,347 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 178,790 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,022 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,417 |
| Countries in the Alps | 0 | - | 4.87 | 117,774 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,196 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,479 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,453 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,074 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,164 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,758 |
| Country Chain | 0 | - | 4.96 | 216,935 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,351 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,242 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,005 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,603 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,514 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,363 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,971 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,238 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,257 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,292 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,097 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,599 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,628 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,624 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,363 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,030 |
| Largest Countries By Category | 0 | - | 4.97 | 157,744 |
| Countries by Emojis | 0 | - | 4.99 | 239,194 |
| Countries by Countries | 0 | - | 4.96 | 62,897 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,809 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,154 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,289 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,173 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,481 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,384 |
| Islands by Country #1 | 0 | - | 4.88 | 175,179 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,430 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,773 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,667 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,283 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 279,063 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,697 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,154 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,304 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,210 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,599 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,139 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,477 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,754 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,427 |
| Island Countries | 0 | - | 4.99 | 709,996 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,671 |
| Northernmost Countries | 0 | - | 4.99 | 360,741 |
| Countries of South America | 0 | - | 5.00 | 923,713 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,163 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,343 |
| "Land" Countries | 0 | - | 4.98 | 335,933 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,739 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,054 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,010 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,686 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,368 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,998 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,562 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,125 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,756 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,740 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,952 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,661 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,228 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,017 |
| Random Countries by Borders | 0 | - | 4.99 | 82,335 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,842 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,181 |
| Countries with Megacities | 0 | - | 4.99 | 261,927 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,041 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,083 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,336 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,118 |
| Countries by Official Language | 0 | - | 4.95 | 194,748 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,679 |
| Countries in their Native Language | 0 | - | 4.99 | 198,287 |
| Independence from Whom | 0 | - | 4.99 | 211,462 |
| Subdivisions by Country | 0 | - | 4.86 | 50,310 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,808 |
| Megadiverse Countries | 0 | - | 4.96 | 134,805 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,624 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,209 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,781 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,031 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,768 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,417 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,057 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,877 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,517 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,009 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,116 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,746 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,022 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,808 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,183 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,357 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,351 |
| World Map Quiz | 0 | - | 4.81 | 64,685 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,860 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,086 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,627 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,999 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,719 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,497 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,594 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,736 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,878 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,301 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,336 |
| Widest Countries East to West | 0 | - | 4.92 | 129,422 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,399 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,017 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,015 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,560 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,285 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,608 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,261 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,736 |
| Countries with Double Letters | 0 | - | 4.97 | 95,175 |
| Countries that End in N | 0 | - | 4.95 | 170,174 |
| Countries with Five Letters | 0 | - | 4.96 | 280,796 |
| Countries with Six Letters | 0 | - | 4.94 | 212,609 |
| Countries with W | 0 | - | 4.97 | 159,582 |
| Countries with Z | 0 | - | 4.98 | 289,958 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,816 |
| Countries That End in U | 0 | - | 4.95 | 120,441 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,831 |
| Countries that End in O | 0 | - | 4.92 | 159,230 |
| Countries that End in R | 0 | - | 4.87 | 118,757 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,535 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,432 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,176 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,131 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,722 |
| Countries That End in Y | 0 | - | 4.91 | 185,669 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,327 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,490 |
| Countries that End in I | 0 | - | 4.94 | 134,901 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,191 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,606 |
| Countries That End in NIA | 0 | - | 4.92 | 109,544 |
| Countries That End in BIA | 0 | - | 4.93 | 148,891 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,782 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,113 |
| Countries That End in RIA | 0 | - | 4.93 | 126,568 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,699 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,853 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,299 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,683 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,209 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,363 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,724 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,291 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,189 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,230 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,898 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,604 |
| Countries that End in L | 0 | - | 4.94 | 156,578 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,276 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,163 |
