| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,661,598 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,828 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,980 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,998 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,421 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,283 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,994,473 |
| Landlocked Countries | 0 | - | 4.99 | 427,568 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,068 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,235 |
| Countries with Four Letters | 0 | - | 4.99 | 426,625 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,673 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,070 |
| Himalayan Countries | 0 | - | 4.93 | 140,960 |
| Andean Countries | 0 | - | 4.94 | 85,867 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,976 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,589 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,521 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,738 |
| Danube Countries | 0 | - | 4.97 | 72,590 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,850 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,004 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,503 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,975 |
| European Landlocked Countries | 0 | - | 4.99 | 147,808 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,580 |
| Countries with the Most Species | 0 | - | 4.99 | 103,663 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,687 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,826 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,965 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,375 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,947 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,736 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,699 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,157 |
| Countries in the Alps | 0 | - | 4.87 | 119,022 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,079 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,222 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,083 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,208 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,178 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,416 |
| Country Chain | 0 | - | 4.96 | 218,712 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,629 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,024 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,529 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,341 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,969 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,847 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,696 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,948 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,050 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,211 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,761 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,683 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,875 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,473 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,593 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,635 |
| Largest Countries By Category | 0 | - | 4.97 | 159,145 |
| Countries by Emojis | 0 | - | 4.99 | 242,942 |
| Countries by Countries | 0 | - | 4.97 | 63,836 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,742 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,503 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,497 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,454 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,716 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,269 |
| Islands by Country #1 | 0 | - | 4.90 | 176,698 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,371 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,691 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,499 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 219,623 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,480 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,345 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,709 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,707 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,519 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,752 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 746,395 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,905 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,136 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,548 |
| Island Countries | 0 | - | 4.99 | 713,124 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,544 |
| Northernmost Countries | 0 | - | 4.99 | 364,756 |
| Countries of South America | 0 | - | 5.00 | 934,743 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,025 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,159 |
| "Land" Countries | 0 | - | 4.98 | 339,125 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,940 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,853 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,802 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,232 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,051 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,035 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,743 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,921 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,709 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,529 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,107 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,404 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,656 |
| Random Countries by Borders | 0 | - | 4.99 | 83,226 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,962 |
| Africa Geography Quiz #1 | 0 | - | 4.93 | 49,634 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,598 |
| Countries with Megacities | 0 | - | 4.99 | 268,070 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,248 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,388 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,570 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,489 |
| Countries by Official Language | 0 | - | 4.95 | 196,297 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,037 |
| Countries in their Native Language | 0 | - | 4.99 | 200,011 |
| Independence from Whom | 0 | - | 4.99 | 213,486 |
| Subdivisions by Country | 0 | - | 4.87 | 50,680 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,731 |
| Megadiverse Countries | 0 | - | 4.96 | 149,611 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,196 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,591 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,836 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,266 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,521 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,944 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,349 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,644 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,196 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,292 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,856 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,511 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,524 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,239 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,658 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,998 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,838 |
| World Map Quiz | 0 | - | 4.81 | 65,968 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,082 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,848 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,591 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,271 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,745 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,019 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,596 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,708 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,890 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,781 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,994 |
| Widest Countries East to West | 0 | - | 4.92 | 130,892 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,452 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,580 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,183 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,302 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,641 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,930 |
| Countries with Double Letters | 0 | - | 4.96 | 97,738 |
| Countries that End in N | 0 | - | 4.95 | 172,733 |
| Countries with Five Letters | 0 | - | 4.96 | 284,778 |
| Countries with Six Letters | 0 | - | 4.94 | 215,065 |
| Countries with W | 0 | - | 4.96 | 161,388 |
| Countries with Z | 0 | - | 4.98 | 293,138 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,761 |
| Countries That End in U | 0 | - | 4.95 | 121,442 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,511 |
| Countries that End in O | 0 | - | 4.92 | 160,411 |
| Countries that End in R | 0 | - | 4.87 | 119,305 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,082 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,229 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,328 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,274 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,945 |
| Countries That End in Y | 0 | - | 4.91 | 186,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,472 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,464 |
| Countries that End in I | 0 | - | 4.94 | 135,452 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,414 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,170 |
| Countries That End in NIA | 0 | - | 4.92 | 110,183 |
| Countries That End in BIA | 0 | - | 4.93 | 149,777 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,983 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,933 |
| Countries That End in RIA | 0 | - | 4.93 | 127,187 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,579 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,038 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,442 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,909 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,466 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,944 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,503 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,618 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,095 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,760 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,952 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,667 |
| Countries that End in L | 0 | - | 4.94 | 157,282 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,737 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,388 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,910 |
