| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,584,712 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 162,913 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 115,918 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,118 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,678 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,072 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,869,653 |
| Landlocked Countries | 0 | - | 4.99 | 413,068 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,086,751 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,533 |
| Countries with Four Letters | 0 | - | 4.99 | 418,186 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,711,438 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,338 |
| Himalayan Countries | 0 | - | 4.95 | 135,125 |
| Andean Countries | 0 | - | 4.94 | 82,710 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,125 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,045 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,801 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 64,504 |
| Danube Countries | 0 | - | 4.97 | 71,017 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,679 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,477 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,337 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,253 |
| European Landlocked Countries | 0 | - | 4.99 | 145,691 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,091 |
| Countries with the Most Species | 0 | - | 4.99 | 95,208 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,243 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,183 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,341 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,195 |
| Countries that Use the Peso | 0 | - | 4.87 | 58,919 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,316 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,533 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,892 |
| Countries in the Alps | 0 | - | 4.87 | 116,721 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,501 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,128 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,961 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,351 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,085 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,945 |
| Country Chain | 0 | - | 4.96 | 215,603 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,499 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,703 |
| Largest Country by Body of Water | 0 | - | 4.96 | 56,714 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 61,993 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,174 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,008 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,390 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,696 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,697 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 116,930 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,584 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,214 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,712 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 238,945 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,439 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,555 |
| Largest Countries By Category | 0 | - | 4.97 | 156,660 |
| Countries by Emojis | 0 | - | 4.99 | 235,910 |
| Countries by Countries | 0 | - | 4.96 | 62,190 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,043 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,671 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,266 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,941 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,309 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,687 |
| Islands by Country #1 | 0 | - | 4.87 | 174,418 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,860 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,231 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,299 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,573 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,628 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,019 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,165 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,320 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,617 |
| Name a Valid Country #6 | 0 | - | 4.94 | 126,235 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 710,783 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,246 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 371,908 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,114 |
| Island Countries | 0 | - | 4.99 | 707,343 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,038,631 |
| Northernmost Countries | 0 | - | 4.99 | 357,379 |
| Countries of South America | 0 | - | 5.00 | 913,764 |
| Countries of Oceania | 0 | - | 5.00 | 1,039,098 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,846,022 |
| "Land" Countries | 0 | - | 4.98 | 333,478 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,339 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,394 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,279 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,296 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,779 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,360,643 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,564 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,582 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,325 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,613 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,138 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,304 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,553 |
| Random Countries by Borders | 0 | - | 4.99 | 81,602 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,073 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 170,922 |
| Countries with Megacities | 0 | - | 4.99 | 246,328 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 196,842 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,762 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,295 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,703 |
| Countries by Official Language | 0 | - | 4.95 | 192,631 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 292,945 |
| Countries in their Native Language | 0 | - | 4.99 | 196,507 |
| Independence from Whom | 0 | - | 4.99 | 209,535 |
| Subdivisions by Country | 0 | - | 4.86 | 50,039 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,620 |
| Megadiverse Countries | 0 | - | 4.97 | 133,842 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,682 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,888 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,382 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,844 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,572 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,952 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,624 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,081 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,187 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,725 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,436 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,377 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,450 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,464 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,624 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 70,994 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,403 |
| World Map Quiz | 0 | - | 4.81 | 63,400 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,339 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,244 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,205 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,907 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,873 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,560 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,791 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 92,992 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,194 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,894 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,280 |
| Widest Countries East to West | 0 | - | 4.92 | 128,543 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,197 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,119 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,532 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,638 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,537 |
| Countries with the Most Desert | 0 | - | 4.93 | 126,967 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,036 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,555 |
| Countries with Double Letters | 0 | - | 4.97 | 93,256 |
| Countries that End in N | 0 | - | 4.94 | 156,329 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,538 |
| Countries with Six Letters | 0 | - | 4.93 | 210,238 |
| Countries with W | 0 | - | 4.97 | 158,142 |
| Countries with Z | 0 | - | 4.98 | 287,704 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,452 |
| Countries That End in U | 0 | - | 4.95 | 119,466 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,406 |
| Countries that End in O | 0 | - | 4.92 | 158,496 |
| Countries that End in R | 0 | - | 4.87 | 118,222 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,819 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,901 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,205 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,409 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,592 |
| Countries That End in Y | 0 | - | 4.90 | 185,167 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,210 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,579 |
| Countries that End in I | 0 | - | 4.94 | 134,333 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,052 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,156 |
| Countries That End in NIA | 0 | - | 4.92 | 108,945 |
| Countries That End in BIA | 0 | - | 4.92 | 147,636 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 165,999 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,424 |
| Countries That End in RIA | 0 | - | 4.93 | 126,031 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,935 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,038 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,466 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,844 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,282 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,883 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,053 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,579 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,425 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,777 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,039 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,722 |
| Countries that End in L | 0 | - | 4.94 | 155,660 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 210,814 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,972 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,474 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,240 |
