| Landlocked Countries Quiz | 0 | - | 4.99 | 323,366 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,893,038 |
| Members of the Arab League | 0 | - | 4.85 | 61,759 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,809 |
| Himalayan Countries | 0 | - | 4.94 | 104,668 |
| Andean Countries | 0 | - | 4.91 | 58,034 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,966 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,285 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,623 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,011 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,255 |
| Danube Countries | 0 | - | 4.97 | 56,612 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,649 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,814 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,130 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,309 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,461 |
| European Landlocked Countries | 0 | - | 4.99 | 115,475 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,287 |
| Countries with the Most Species | 0 | - | 4.99 | 89,511 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,307 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,660 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,989 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,219 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,388 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,666 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,096 |
| Countries in the Alps | 0 | - | 4.84 | 102,569 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,245 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,967 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,533 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,190 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,894 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,499 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,574 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,112 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,607 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,380 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,555 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,643 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,429 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,908 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,415 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,890 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,296 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,341 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,894 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,740 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,250 |
| Largest Countries By Category | 0 | - | 4.96 | 144,794 |
| Countries by Countries | 0 | - | 4.96 | 54,594 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,659 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,124 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,067,531 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,920 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 355,196 |
| Island Countries Quiz | 0 | - | 4.99 | 660,163 |
| Biggest Countries by Area | 0 | - | 5.00 | 932,420 |
| Northernmost Countries | 0 | - | 4.99 | 326,966 |
| Countries of South America | 0 | - | 5.00 | 792,491 |
| Countries of Oceania | 0 | - | 5.00 | 892,742 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,148,597 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,570,922 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,739 |
| Countries with Megacities | 0 | - | 4.99 | 196,999 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,345 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,830 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,221 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,787 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,685 |
| Countries by Official Language | 0 | - | 4.96 | 171,320 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,058 |
| Countries in their Native Language | 0 | - | 4.98 | 178,208 |
| Independence from Whom | 0 | - | 4.99 | 185,425 |
| Subdivisions by Country | 0 | - | 4.82 | 46,419 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,358 |
| Megadiverse Countries | 0 | - | 4.96 | 125,268 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,293 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,634 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,363 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,514 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,104 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,810 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,069 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,007 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,326 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,753 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,565 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,966 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,938 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,509 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,236 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 82,059 |
| World Map Quiz | 0 | - | 4.90 | 49,310 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,438 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,606 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,844 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,939 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,477 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,262 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,531 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,230 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,907 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,396 |
| Widest Countries East to West | 0 | - | 4.93 | 119,313 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,808 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,938 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,628 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,437 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,784 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,112 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,440 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,037 |
| Countries with Double Letters | 0 | - | 4.96 | 68,278 |
| Countries that End in N | 0 | - | 4.94 | 132,618 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,643 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,957 |
| Countries with W | 0 | - | 4.96 | 122,658 |
| Countries with Z | 0 | - | 4.98 | 244,335 |
| Countries with Letters Missing | 0 | - | 4.97 | 162,974 |
| Countries That End in U | 0 | - | 4.95 | 107,529 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,415 |
| Countries that End in O | 0 | - | 4.92 | 146,900 |
| Countries that End in R | 0 | - | 4.85 | 96,457 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,215 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,275 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,729 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,193 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,256 |
| Countries That End in Y | 0 | - | 4.90 | 161,610 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,945 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,723 |
| Countries that End in I | 0 | - | 4.92 | 114,486 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,499 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,252 |
| Countries That End in NIA | 0 | - | 4.93 | 100,821 |
| Countries That End in BIA | 0 | - | 4.91 | 126,045 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,219 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,713 |
| Countries That End in RIA | 0 | - | 4.90 | 100,937 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,414 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,638 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,632 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,516 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,333 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,207 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,685 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,803 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,682 |
| Countries that End in L | 0 | - | 4.95 | 134,248 |
| "Land" Countries | 0 | - | 4.98 | 289,140 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,781 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,169 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,257 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,162 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,578 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,806 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,139 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,432 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 132,852 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,814 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,834 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,867 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,043 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,285 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,018 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,310,808 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,511 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,062,190 |
| One Border Countries | 0 | - | 4.98 | 409,952 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,786 |
| Top-Producing Countries | 0 | - | 4.71 | 100,166 |
| Country Codes Quiz | 0 | - | 4.45 | 77,173 |
| Countries on the Equator | 0 | - | 4.78 | 134,248 |
| Separatist Movements | 0 | - | 4.45 | 42,659 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,890 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,530 |
| Westernmost Countries | 0 | - | 4.50 | 47,497 |
| Easternmost Countries | 0 | - | 4.76 | 60,417 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 37,057 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,463 |
| Indochina Countries | 0 | - | 4.72 | 62,802 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,065 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,864 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,398 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,138 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,945 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,700 |
| Countries that are the Source of Refugees | 0 | - | 4.67 | 56,444 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,393 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,020 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,018 |
| Flyover Countries | 0 | - | 4.66 | 46,975 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,683 |
| Countries with the Most Coral Reefs | 0 | - | 4.66 | 37,498 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,247 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,825 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,471 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,267 |
