| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 718,041 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,610,745 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,096,647 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,597 |
| Countries with Four Letters | 0 | - | 4.99 | 421,138 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,828 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,545 |
| Anagram Chain - Countries | 0 | - | 4.98 | 116,047 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,995 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 64,101 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,265,463 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 199,307 |
| Top Five Countries By Category #3 | 0 | - | 4.81 | 170,538 |
| Country Chain | 0 | - | 4.96 | 216,671 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 217,892 |
| Countries by Emojis | 0 | - | 4.99 | 238,312 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,578 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 319,386 |
| Islands by Country #1 | 0 | - | 4.88 | 174,993 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,282 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,630 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,578 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 215,612 |
| Name a Valid Country #3 | 0 | - | 4.99 | 262,225 |
| Name a Valid Country #1 | 0 | - | 4.99 | 288,047 |
| Name a Valid Country #2 | 0 | - | 4.98 | 249,711 |
| Name a Valid Country #4 | 0 | - | 4.97 | 254,647 |
| Name a Valid Country #5 | 0 | - | 4.99 | 205,955 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,721 |
| Landlocked Countries | 0 | - | 4.99 | 417,982 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,750,589 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.95 | 238,862 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 180,444 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,858 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,856 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,579 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,229 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,375 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,023 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 235,184 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 224,250 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,557 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,396 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,920 |
| Random Countries by Borders | 0 | - | 4.99 | 82,195 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,458 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,110 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,339 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,601 |
| Island Countries | 0 | - | 4.99 | 709,342 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,521 |
| Himalayan Countries | 0 | - | 4.94 | 137,010 |
| Andean Countries | 0 | - | 4.95 | 83,726 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,971 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,335 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,647 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,219 |
| Danube Countries | 0 | - | 4.97 | 71,560 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,405 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,972 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,468 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,522 |
| European Landlocked Countries | 0 | - | 4.99 | 146,653 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,992 |
| Countries with the Most Species | 0 | - | 4.99 | 102,702 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,127 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,387 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,553 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,246 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,910 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,294 |
| Countries in the Alps | 0 | - | 4.86 | 117,538 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,035 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,183 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,354 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,884 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,988 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,380 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,154 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,107 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,911 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,469 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,430 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,288 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,849 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,113 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,137 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,987 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,992 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,515 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,400 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,809 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,984 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,923 |
| Largest Countries By Category | 0 | - | 4.97 | 157,488 |
| Countries by Countries | 0 | - | 4.96 | 62,752 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,562 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,069 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,129 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,236 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,972 |
| Northernmost Countries | 0 | - | 4.99 | 360,045 |
| Countries of South America | 0 | - | 5.00 | 921,698 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,497 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,402 |
| "Land" Countries | 0 | - | 4.98 | 335,556 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 381,414 |
| Five Biggest World Cities by Letter #2 | 0 | - | 4.83 | 68,753 |
| Five Biggest World Cities by Letter #1 | 0 | - | 4.95 | 73,355 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 136,926 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 79,869 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,948 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,375 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,690 |
| Countries with Megacities | 0 | - | 4.99 | 249,798 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,522 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,790 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,860 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,777 |
| Countries by Official Language | 0 | - | 4.95 | 194,456 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,283 |
| Countries in their Native Language | 0 | - | 4.99 | 198,014 |
| Independence from Whom | 0 | - | 4.99 | 211,127 |
| Subdivisions by Country | 0 | - | 4.86 | 50,252 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,562 |
| Megadiverse Countries | 0 | - | 4.96 | 134,699 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,151 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,146 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,701 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,989 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,600 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,313 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,826 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,747 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,447 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,927 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,646 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,661 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,885 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,727 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,053 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,279 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,933 |
| World Map Quiz | 0 | - | 4.81 | 64,377 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,098 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,930 |
| Countries With the Most Russian Speakers | 0 | - | 4.97 | 99,982 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,312 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,825 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,547 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,071 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,430 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,601 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,748 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,214 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,211 |
| Widest Countries East to West | 0 | - | 4.92 | 129,277 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,366 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,834 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,968 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,445 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,121 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,466 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,194 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,707 |
| Countries with Double Letters | 0 | - | 4.97 | 94,893 |
| Countries that End in N | 0 | - | 4.95 | 169,476 |
| Countries with Five Letters | 0 | - | 4.96 | 278,359 |
| Countries with Six Letters | 0 | - | 4.94 | 212,230 |
| Countries with W | 0 | - | 4.97 | 159,372 |
| Countries with Z | 0 | - | 4.98 | 289,580 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,577 |
| Countries That End in U | 0 | - | 4.95 | 120,336 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,587 |
| Countries that End in O | 0 | - | 4.92 | 159,135 |
| Countries that End in R | 0 | - | 4.87 | 118,676 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,463 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,165 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,998 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,997 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,586 |
| Countries That End in Y | 0 | - | 4.90 | 185,594 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,090 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,308 |
| Countries that End in I | 0 | - | 4.94 | 134,814 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,930 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,526 |
| Countries That End in NIA | 0 | - | 4.92 | 109,447 |
| Countries That End in BIA | 0 | - | 4.93 | 148,749 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,614 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,965 |
| Countries That End in RIA | 0 | - | 4.93 | 126,457 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,548 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,458 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,098 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,434 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,003 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,263 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,590 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,143 |
