| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,650,553 |
| Countries by Borders, Bordering Sea, Capital Proximity, Official Language or Currency in 30 Seconds | 0 | - | 4.96 | 242,517 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,119,971 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,109 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,951 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,221 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,539 |
| Countries with Four Letters | 0 | - | 4.99 | 425,545 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 70,916 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 65,776 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,842,415 |
| Countries by Borders in 90 Seconds with an Empty Map | 0 | - | 4.90 | 280,800 |
| Landlocked Countries | 0 | - | 4.99 | 425,192 |
| Countries of the World - One Minute Sprint | 0 | - | 4.36 | 982,112 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 323,591 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 201,905 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,304 |
| Country Chain | 0 | - | 4.96 | 218,363 |
| Top 10 Languages Spoken in Europe | 0 | - | 4.96 | 220,601 |
| Countries by Emojis | 0 | - | 4.99 | 241,786 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,528 |
| Islands by Country #1 | 0 | - | 4.90 | 176,263 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,188 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,509 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,357 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,801,180 |
| Name a Valid Country #3 | 0 | - | 4.99 | 265,862 |
| Name a Valid Country #1 | 0 | - | 4.99 | 294,973 |
| Name a Valid Country #2 | 0 | - | 4.98 | 253,995 |
| Name a Valid Country #4 | 0 | - | 4.97 | 258,998 |
| Name a Valid Country #5 | 0 | - | 4.99 | 209,872 |
| Name a Valid Country #6 | 0 | - | 4.95 | 144,811 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,988 |
| Himalayan Countries | 0 | - | 4.93 | 140,021 |
| Andean Countries | 0 | - | 4.94 | 85,316 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,472 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,834 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,043 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,333 |
| Danube Countries | 0 | - | 4.97 | 72,323 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,502 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,772 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,993 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,500 |
| European Landlocked Countries | 0 | - | 4.99 | 147,544 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,205 |
| Countries with the Most Species | 0 | - | 4.99 | 103,525 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,332 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,752 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,856 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,668 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,673 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,794 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,530 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,964 |
| Countries in the Alps | 0 | - | 4.87 | 118,694 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,499 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,761 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,923 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,971 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,888 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,196 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,334 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,814 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,382 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,129 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,828 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,700 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,506 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,737 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,835 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,710 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,566 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,614 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,711 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,607 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,488 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,020 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,477 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,053 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,875 |
| Largest Countries By Category | 0 | - | 4.97 | 158,783 |
| Countries by Countries | 0 | - | 4.96 | 63,584 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,369 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,604 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,039 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 226,995 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 193,616 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,193 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 123,953 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,382 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,054 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,496 |
| Random Countries by Borders | 0 | - | 4.99 | 83,041 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,522 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,028 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,531 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,423 |
| Island Countries | 0 | - | 4.99 | 712,365 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,512 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,200 |
| Northernmost Countries | 0 | - | 4.99 | 363,761 |
| Countries of South America | 0 | - | 5.00 | 931,931 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,469 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,672 |
| "Land" Countries | 0 | - | 4.98 | 338,287 |
| World Map with 10 Random Extra Borders | 0 | - | 4.95 | 387,412 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,839 |
| Countries with the Most Arabic Speakers | 0 | - | 4.92 | 80,759 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,414 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,306 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,011 |
| Countries with Megacities | 0 | - | 4.99 | 266,853 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,733 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,038 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,048 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,165 |
| Countries by Official Language | 0 | - | 4.95 | 195,907 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,510 |
| Countries in their Native Language | 0 | - | 4.99 | 199,659 |
| Independence from Whom | 0 | - | 4.99 | 212,962 |
| Subdivisions by Country | 0 | - | 4.87 | 50,592 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,362 |
| Megadiverse Countries | 0 | - | 4.96 | 135,249 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,872 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,515 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,448 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,213 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,555 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,816 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,050 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,546 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,823 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,246 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,433 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,352 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,417 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,129 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,559 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,683 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,223 |
| World Map Quiz | 0 | - | 4.81 | 65,609 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,012 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,665 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,159 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,009 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,504 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,437 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,378 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,481 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,680 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,657 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,562 |
| Widest Countries East to West | 0 | - | 4.92 | 130,403 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,585 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,196 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,497 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,024 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,939 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,428 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,482 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,885 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,807 |
| Countries with Double Letters | 0 | - | 4.96 | 96,988 |
| Countries that End in N | 0 | - | 4.95 | 171,851 |
| Countries with Five Letters | 0 | - | 4.96 | 283,646 |
| Countries with Six Letters | 0 | - | 4.94 | 214,379 |
| Countries with W | 0 | - | 4.96 | 160,882 |
| Countries with Z | 0 | - | 4.98 | 292,341 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,238 |
| Countries That End in U | 0 | - | 4.95 | 121,157 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,041 |
| Countries that End in O | 0 | - | 4.92 | 160,180 |
| Countries that End in R | 0 | - | 4.87 | 119,156 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,912 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,761 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,105 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,783 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,714 |
| Countries That End in Y | 0 | - | 4.91 | 186,074 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,400 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,234 |
| Countries that End in I | 0 | - | 4.94 | 135,294 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,563 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,031 |
| Countries That End in NIA | 0 | - | 4.92 | 110,023 |
| Countries That End in BIA | 0 | - | 4.93 | 149,547 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,481 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,737 |
| Countries That End in RIA | 0 | - | 4.93 | 127,033 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,351 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,487 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,124 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,561 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,124 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,782 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,299 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,528 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,865 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,635 |
