| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,586,925 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 711,296 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,105 |
| Solve the Secret Country #2 | 0 | - | 4.85 | 116,076 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,203 |
| Countries but all Vowels are Changed to O | 0 | - | 4.92 | 67,795 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,167 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,904,374 |
| Landlocked Countries | 0 | - | 4.99 | 413,430 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,087,675 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 446,716 |
| Countries with Four Letters | 0 | - | 4.99 | 418,438 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,002 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,500 |
| Himalayan Countries | 0 | - | 4.95 | 135,284 |
| Andean Countries | 0 | - | 4.94 | 82,793 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,193 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,145 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,860 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,567 |
| Danube Countries | 0 | - | 4.97 | 71,063 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,731 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,519 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,427 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,353 |
| European Landlocked Countries | 0 | - | 4.99 | 145,732 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,171 |
| Countries with the Most Species | 0 | - | 4.99 | 95,234 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,311 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,193 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,360 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,282 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,948 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 169,404 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,561 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,937 |
| Countries in the Alps | 0 | - | 4.86 | 116,789 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,538 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,225 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,992 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,404 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,133 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,979 |
| Country Chain | 0 | - | 4.96 | 215,692 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,552 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,736 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,189 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,036 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,190 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,032 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,431 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,722 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,735 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,022 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,621 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,246 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,752 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,185 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,607 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,591 |
| Largest Countries By Category | 0 | - | 4.97 | 156,722 |
| Countries by Emojis | 0 | - | 4.99 | 236,099 |
| Countries by Countries | 0 | - | 4.96 | 62,242 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,091 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 316,940 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,352 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,958 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,323 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,742 |
| Islands by Country #1 | 0 | - | 4.87 | 174,464 |
| Regions of Countries #1 | 0 | - | 4.97 | 158,900 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,265 |
| Regions of Countries #3 | 0 | - | 4.84 | 90,324 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 213,734 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 277,353 |
| Name a Valid Country #3 | 0 | - | 4.99 | 259,761 |
| Name a Valid Country #1 | 0 | - | 4.99 | 283,373 |
| Name a Valid Country #2 | 0 | - | 4.98 | 246,341 |
| Name a Valid Country #4 | 0 | - | 4.97 | 251,515 |
| Name a Valid Country #5 | 0 | - | 4.99 | 189,752 |
| Name a Valid Country #6 | 0 | - | 4.95 | 126,358 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,646 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,058 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,743 |
| Island Countries | 0 | - | 4.99 | 707,546 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,241 |
| Northernmost Countries | 0 | - | 4.99 | 357,629 |
| Countries of South America | 0 | - | 5.00 | 914,396 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,072 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,679 |
| "Land" Countries | 0 | - | 4.98 | 333,596 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,414 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,435 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,321 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,326 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 88,835 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,774 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 47,651 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,613 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 233,526 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 222,761 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 190,278 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 121,406 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,587 |
| Random Countries by Borders | 0 | - | 4.99 | 81,655 |
| Random Name a Valid Country | 0 | - | 4.99 | 203,180 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,080 |
| Countries with Megacities | 0 | - | 4.99 | 246,687 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,008 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,867 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,432 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,789 |
| Countries by Official Language | 0 | - | 4.95 | 192,731 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,069 |
| Countries in their Native Language | 0 | - | 4.99 | 196,595 |
| Independence from Whom | 0 | - | 4.99 | 209,637 |
| Subdivisions by Country | 0 | - | 4.86 | 50,060 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,714 |
| Megadiverse Countries | 0 | - | 4.97 | 133,884 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,761 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,910 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,418 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,853 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,629 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,986 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,887 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,130 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,208 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,529 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,404 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,480 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,491 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,654 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,013 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,531 |
| World Map Quiz | 0 | - | 4.81 | 63,473 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,564 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,310 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,310 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,966 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,926 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,689 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,833 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,041 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,254 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,933 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,323 |
| Widest Countries East to West | 0 | - | 4.92 | 128,593 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,185 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,560 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,678 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,610 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,023 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,048 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,573 |
| Countries with Double Letters | 0 | - | 4.97 | 93,349 |
| Countries that End in N | 0 | - | 4.94 | 156,569 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,640 |
| Countries with Six Letters | 0 | - | 4.93 | 210,313 |
| Countries with W | 0 | - | 4.97 | 158,200 |
| Countries with Z | 0 | - | 4.98 | 287,826 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,520 |
| Countries That End in U | 0 | - | 4.95 | 119,504 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,505 |
| Countries that End in O | 0 | - | 4.92 | 158,535 |
| Countries that End in R | 0 | - | 4.87 | 118,259 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,851 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,980 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,299 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,474 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,989 |
| Countries That End in Y | 0 | - | 4.90 | 185,191 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,338 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,651 |
| Countries that End in I | 0 | - | 4.94 | 134,398 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,153 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,181 |
| Countries That End in NIA | 0 | - | 4.92 | 108,989 |
| Countries That End in BIA | 0 | - | 4.92 | 147,691 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,042 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,470 |
| Countries That End in RIA | 0 | - | 4.93 | 126,063 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,983 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,151 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,502 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,876 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,337 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,917 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,100 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,626 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,481 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,808 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,110 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,786 |
| Countries that End in L | 0 | - | 4.94 | 155,706 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,081 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,981 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,499 |
