| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,619,064 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,464 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,115 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,372 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 69,421 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,454 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,394,934 |
| Landlocked Countries | 0 | - | 4.99 | 419,704 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,100,084 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,162 |
| Countries with Four Letters | 0 | - | 4.99 | 422,018 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,761,988 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,312 |
| Himalayan Countries | 0 | - | 4.95 | 137,753 |
| Andean Countries | 0 | - | 4.95 | 84,094 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,331 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,865 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,966 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,445 |
| Danube Countries | 0 | - | 4.97 | 71,739 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,663 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,140 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,795 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,877 |
| European Landlocked Countries | 0 | - | 4.99 | 146,862 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,240 |
| Countries with the Most Species | 0 | - | 4.99 | 103,004 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,397 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,458 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,620 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 200,296 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,370 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 180,146 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,043 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,438 |
| Countries in the Alps | 0 | - | 4.87 | 117,819 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,216 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,538 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,468 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,289 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,207 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,781 |
| Country Chain | 0 | - | 4.96 | 216,977 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,372 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,261 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,024 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,625 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,524 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,371 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,994 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,259 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,277 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,351 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,117 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,623 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,659 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,734 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,441 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,042 |
| Largest Countries By Category | 0 | - | 4.97 | 157,786 |
| Countries by Emojis | 0 | - | 4.99 | 239,365 |
| Countries by Countries | 0 | - | 4.96 | 62,923 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,836 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 320,286 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,325 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,181 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,486 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,411 |
| Islands by Country #1 | 0 | - | 4.88 | 175,201 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,462 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,802 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,679 |
| Can You Name These 50 Random Countries? | 0 | - | 4.99 | 216,387 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,781 |
| Name a Valid Country #1 | 0 | - | 4.99 | 289,329 |
| Name a Valid Country #2 | 0 | - | 4.98 | 250,420 |
| Name a Valid Country #4 | 0 | - | 4.97 | 255,311 |
| Name a Valid Country #5 | 0 | - | 4.99 | 206,693 |
| Name a Valid Country #6 | 0 | - | 4.94 | 129,207 |
| Countries by Languages in 90 Seconds | 0 | - | 4.94 | 719,947 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,666 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,820 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,734 |
| Island Countries | 0 | - | 4.99 | 710,088 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,933 |
| Northernmost Countries | 0 | - | 4.99 | 360,859 |
| Countries of South America | 0 | - | 5.00 | 924,029 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,655 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,869,223 |
| "Land" Countries | 0 | - | 4.98 | 335,989 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,790 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,093 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,041 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,711 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,400 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,564 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,603 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,142 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,853 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,826 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 192,026 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,699 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 139,311 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,036 |
| Random Countries by Borders | 0 | - | 4.99 | 82,364 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,895 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,251 |
| Countries with Megacities | 0 | - | 4.99 | 262,389 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,085 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,113 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,388 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,165 |
| Countries by Official Language | 0 | - | 4.95 | 194,798 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,744 |
| Countries in their Native Language | 0 | - | 4.99 | 198,335 |
| Independence from Whom | 0 | - | 4.99 | 211,534 |
| Subdivisions by Country | 0 | - | 4.86 | 50,323 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,848 |
| Megadiverse Countries | 0 | - | 4.96 | 134,821 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,667 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,219 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,792 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,036 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,808 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,432 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,087 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,893 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,530 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,016 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,173 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,761 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,038 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,828 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,202 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,373 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,421 |
| World Map Quiz | 0 | - | 4.81 | 64,731 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,962 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,116 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,657 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,018 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,747 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,578 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,618 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,766 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,903 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,316 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,353 |
| Widest Countries East to West | 0 | - | 4.92 | 129,440 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,405 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,057 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,029 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,582 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,317 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,631 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,276 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,742 |
| Countries with Double Letters | 0 | - | 4.97 | 95,241 |
| Countries that End in N | 0 | - | 4.95 | 170,244 |
| Countries with Five Letters | 0 | - | 4.96 | 280,974 |
| Countries with Six Letters | 0 | - | 4.94 | 212,681 |
| Countries with W | 0 | - | 4.97 | 159,630 |
| Countries with Z | 0 | - | 4.98 | 290,373 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,873 |
| Countries That End in U | 0 | - | 4.95 | 120,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,888 |
| Countries that End in O | 0 | - | 4.92 | 159,248 |
| Countries that End in R | 0 | - | 4.87 | 118,764 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,545 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,476 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,235 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,154 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,759 |
| Countries That End in Y | 0 | - | 4.91 | 185,683 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,410 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,519 |
| Countries that End in I | 0 | - | 4.94 | 134,910 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,521 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,618 |
| Countries That End in NIA | 0 | - | 4.92 | 109,567 |
| Countries That End in BIA | 0 | - | 4.93 | 148,919 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,815 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,139 |
| Countries That End in RIA | 0 | - | 4.93 | 126,589 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,725 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,921 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,334 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,714 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,241 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,382 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,737 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,315 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,231 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,239 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,915 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,645 |
| Countries that End in L | 0 | - | 4.94 | 156,601 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,418 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,168 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,881 |
