| Islands by Country #1 | 0 | - | 4.90 | 176,510 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,348 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,667 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,478 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,638 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,660,442 |
| Islands by Country #2 | 0 | - | 4.80 | 77,964 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,980,161 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,128,537 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,140 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,753 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,907 |
| Anagram Chain - Countries | 0 | - | 4.98 | 117,959 |
| Countries with Four Letters | 0 | - | 4.99 | 426,520 |
| Countries but all Vowels are Changed to O | 0 | - | 4.91 | 71,365 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 66,236 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 338,290 |
| Landlocked Countries | 0 | - | 4.99 | 427,378 |
| Musical Acts by Country #1 | 0 | - | 4.45 | 80,034 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 202,332 |
| Top Five Countries By Category #3 | 0 | - | 4.83 | 184,695 |
| Country Chain | 0 | - | 4.96 | 218,681 |
| Countries by Emojis | 0 | - | 4.99 | 242,883 |
| African Island Countries | 0 | - | 4.96 | 102,750 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,724 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 324,426 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,389 |
| Name a Valid Country #3 | 0 | - | 4.99 | 266,426 |
| Name a Valid Country #1 | 0 | - | 4.99 | 296,199 |
| Name a Valid Country #2 | 0 | - | 4.98 | 254,657 |
| Name a Valid Country #4 | 0 | - | 4.97 | 259,644 |
| Name a Valid Country #5 | 0 | - | 4.99 | 210,459 |
| Name a Valid Country #6 | 0 | - | 4.95 | 145,686 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 745,878 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,977 |
| Himalayan Countries | 0 | - | 4.93 | 140,880 |
| Andean Countries | 0 | - | 4.94 | 85,829 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,943 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,523 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,486 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,709 |
| Danube Countries | 0 | - | 4.97 | 72,570 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,818 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,986 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,469 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,945 |
| European Landlocked Countries | 0 | - | 4.99 | 147,785 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,556 |
| Countries with the Most Species | 0 | - | 4.99 | 103,656 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,660 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,817 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,961 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,933 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,687 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,144 |
| Countries in the Alps | 0 | - | 4.87 | 119,000 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,038 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,176 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,072 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,189 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,144 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,400 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,614 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,003 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,519 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,323 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,961 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,834 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,684 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,937 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,036 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,174 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,746 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,551 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,857 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,384 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,534 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,624 |
| Largest Countries By Category | 0 | - | 4.97 | 159,117 |
| Countries by Countries | 0 | - | 4.97 | 63,819 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,470 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,451 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,243 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,741 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,081 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,447 |
| Island Countries | 0 | - | 4.99 | 713,059 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,332 |
| Northernmost Countries | 0 | - | 4.99 | 364,661 |
| Mountains by Country | 0 | - | 4.56 | 82,039 |
| Countries of South America | 0 | - | 5.00 | 934,481 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,737 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,505 |
| "Land" Countries | 0 | - | 4.98 | 339,057 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 181,914 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 89,833 |
| American Countries with the Shortest Names | 0 | - | 4.97 | 121,784 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 111,220 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 90,029 |
| Richest Island Countries | 0 | - | 4.85 | 101,378 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,525 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,713 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,898 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 238,654 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 227,486 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 194,058 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 124,368 |
| Movies by Country Quiz #1 | 0 | - | 4.17 | 53,450 |
| Movies by Country #2 | 0 | - | 4.20 | 45,856 |
| Musical Acts by Country #2 | 0 | - | 4.37 | 36,102 |
| Random Countries by Borders | 0 | - | 4.99 | 83,211 |
| Random Name a Valid Country | 0 | - | 4.99 | 206,927 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,539 |
| Countries with Megacities | 0 | - | 4.99 | 267,947 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,194 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,355 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,513 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,461 |
| Countries by Official Language | 0 | - | 4.95 | 196,253 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,988 |
| Countries in their Native Language | 0 | - | 4.99 | 199,977 |
| Independence from Whom | 0 | - | 4.99 | 213,440 |
| Subdivisions by Country | 0 | - | 4.87 | 50,673 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,691 |
| Megadiverse Countries | 0 | - | 4.96 | 149,372 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,159 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,588 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,819 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,263 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,496 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,929 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,304 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,635 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,177 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,288 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,812 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,499 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,514 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,225 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,649 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,984 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,777 |
| World Map Quiz | 0 | - | 4.81 | 65,939 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,506 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,828 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,552 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,251 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,720 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,969 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,571 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,684 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,871 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,771 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,965 |
| Widest Countries East to West | 0 | - | 4.92 | 130,870 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,634 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,421 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,570 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,172 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,133 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,625 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,542 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,927 |
| Inventions by Country #1 | 0 | - | 4.47 | 55,204 |
| Airlines by Country | 0 | - | 4.52 | 135,946 |
| Countries with Double Letters | 0 | - | 4.96 | 97,681 |
| Countries that End in N | 0 | - | 4.95 | 172,672 |
| Countries with Five Letters | 0 | - | 4.96 | 284,712 |
| Countries with Six Letters | 0 | - | 4.94 | 215,007 |
| Countries with W | 0 | - | 4.96 | 161,347 |
| Countries with Z | 0 | - | 4.98 | 293,070 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,719 |
| Countries That End in U | 0 | - | 4.95 | 121,407 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,467 |
| Countries that End in O | 0 | - | 4.92 | 160,388 |
| Countries that End in R | 0 | - | 4.87 | 119,292 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,070 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,186 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 186,614 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,233 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,868 |
| Countries That End in Y | 0 | - | 4.91 | 186,187 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,385 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,447 |
| Countries that End in I | 0 | - | 4.94 | 135,438 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,350 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,155 |
| Countries That End in NIA | 0 | - | 4.92 | 110,170 |
| Countries That End in BIA | 0 | - | 4.93 | 149,752 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,954 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,921 |
| Countries That End in RIA | 0 | - | 4.93 | 127,166 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,561 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,991 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,419 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,880 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,437 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,933 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,475 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,616 |
