| Landlocked Countries | 0 | - | 4.99 | 419,236 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,355,170 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,124 |
| Himalayan Countries | 0 | - | 4.95 | 137,544 |
| Andean Countries | 0 | - | 4.95 | 84,000 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,270 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,741 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,888 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,390 |
| Danube Countries | 0 | - | 4.97 | 71,700 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,608 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,093 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,705 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,779 |
| European Landlocked Countries | 0 | - | 4.99 | 146,809 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,172 |
| Countries with the Most Species | 0 | - | 4.99 | 102,946 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,318 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,437 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,598 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,328 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,005 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,392 |
| Countries in the Alps | 0 | - | 4.87 | 117,738 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,167 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,427 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,440 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,026 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,138 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,738 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,315 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,218 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,982 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,580 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,502 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,351 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,955 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,211 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,237 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,249 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,084 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,584 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,563 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,518 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,294 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,015 |
| Largest Countries By Category | 0 | - | 4.97 | 157,687 |
| Countries by Countries | 0 | - | 4.96 | 62,865 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,253 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,171 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,479 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,353 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,758,658 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,252 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,684 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,260 |
| Island Countries | 0 | - | 4.99 | 709,891 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,384 |
| Northernmost Countries | 0 | - | 4.99 | 360,614 |
| Countries of South America | 0 | - | 5.00 | 923,270 |
| Countries of Oceania | 0 | - | 5.00 | 1,051,648 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,867,262 |
| "Land" Countries | 0 | - | 4.98 | 335,866 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,118 |
| Countries with Megacities | 0 | - | 4.99 | 261,255 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,980 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,045 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,252 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,062 |
| Countries by Official Language | 0 | - | 4.95 | 194,689 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,608 |
| Countries in their Native Language | 0 | - | 4.99 | 198,242 |
| Independence from Whom | 0 | - | 4.99 | 211,387 |
| Subdivisions by Country | 0 | - | 4.86 | 50,299 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,766 |
| Megadiverse Countries | 0 | - | 4.96 | 134,789 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,583 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,202 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,765 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,027 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,738 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,399 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,018 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,861 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,506 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,999 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,047 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,733 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,008 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,795 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,168 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,337 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,376,357 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,276 |
| World Map Quiz | 0 | - | 4.81 | 64,631 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,732 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,063 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,571 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,963 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,680 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,414 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,551 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,706 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,858 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,288 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,315 |
| Widest Countries East to West | 0 | - | 4.92 | 129,402 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,388 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,988 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,003 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,535 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,254 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,578 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,247 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,732 |
| Countries with Double Letters | 0 | - | 4.97 | 95,141 |
| Countries that End in N | 0 | - | 4.95 | 170,088 |
| Countries with Five Letters | 0 | - | 4.96 | 280,526 |
| Countries with Six Letters | 0 | - | 4.94 | 212,542 |
| Countries with W | 0 | - | 4.97 | 159,549 |
| Countries with Z | 0 | - | 4.98 | 289,880 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,795 |
| Countries That End in U | 0 | - | 4.95 | 120,425 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,795 |
| Countries that End in O | 0 | - | 4.92 | 159,216 |
| Countries that End in R | 0 | - | 4.87 | 118,748 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,524 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,385 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,147 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,105 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,695 |
| Countries That End in Y | 0 | - | 4.91 | 185,657 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,274 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,463 |
| Countries that End in I | 0 | - | 4.94 | 134,886 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,124 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,589 |
| Countries That End in NIA | 0 | - | 4.92 | 109,532 |
| Countries That End in BIA | 0 | - | 4.93 | 148,869 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,753 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,090 |
| Countries That End in RIA | 0 | - | 4.93 | 126,558 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,662 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,773 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,272 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,639 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,165 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,344 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,703 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,267 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,160 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,213 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,865 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,569 |
| Countries that End in L | 0 | - | 4.94 | 156,559 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,143 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,159 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,856 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,736 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,795 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,837 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,218 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,661 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,163 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,650 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,603 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,964 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,609 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,688 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,443,733 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,835 |
| One Border Countries | 0 | - | 4.98 | 467,844 |
| Top Producing Countries | 0 | - | 4.63 | 116,143 |
| ISO Country Codes | 0 | - | 4.45 | 82,364 |
| Countries on the Equator | 0 | - | 4.63 | 140,652 |
| Members of the Arab League | 0 | - | 4.77 | 75,583 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 69,792 |
| Separatist Movements | 0 | - | 4.44 | 45,822 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,066 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,762 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,163 |
| Westernmost Countries | 0 | - | 4.42 | 60,978 |
| Easternmost Countries | 0 | - | 4.75 | 62,834 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,595 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 108,438 |
| Indochina Countries | 0 | - | 4.74 | 66,106 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,590 |
| Countries With the Most Conflict Deaths | 0 | - | 4.61 | 96,259 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 43,955 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,060 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,331 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,606 |
| Countries that are the Source of Refugees | 0 | - | 4.68 | 60,800 |
| Countries 206 to 242 | 0 | - | 4.74 | 33,866 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,292 |
| Countries with the Most Turkic People | 0 | - | 4.75 | 45,614 |
| Countries Most-Mentioned by the New York Times, 1900–2018 | 0 | - | 4.74 | 61,477 |
| Flyover Countries | 0 | - | 4.68 | 50,740 |
| Top 50 Countries by Area - In Order | 0 | - | 4.73 | 73,745 |
| Countries with the Most Coral Reefs | 0 | - | 4.77 | 48,459 |
