| Landlocked Countries Quiz | 0 | - | 4.99 | 323,263 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,883,236 |
| Members of the Arab League | 0 | - | 4.85 | 61,706 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,771 |
| Himalayan Countries | 0 | - | 4.94 | 104,634 |
| Andean Countries | 0 | - | 4.91 | 58,008 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,944 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,261 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,603 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,005 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,251 |
| Danube Countries | 0 | - | 4.97 | 56,609 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,638 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,806 |
| Countries with the Best Passports | 0 | - | 4.87 | 71,114 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,299 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,448 |
| European Landlocked Countries | 0 | - | 4.99 | 115,382 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,271 |
| Countries with the Most Species | 0 | - | 4.99 | 89,506 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,298 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,655 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,988 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,210 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,386 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,662 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,084 |
| Countries in the Alps | 0 | - | 4.84 | 102,553 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,234 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,933 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,524 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,185 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,887 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,489 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,559 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,106 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,286 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,597 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,374 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,550 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,635 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,419 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,900 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,406 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,853 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,292 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,335 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,826 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,709 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,246 |
| Largest Countries By Category | 0 | - | 4.96 | 144,782 |
| Countries by Countries | 0 | - | 4.96 | 54,590 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,655 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,107 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,066,564 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,871 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 355,119 |
| Island Countries Quiz | 0 | - | 4.99 | 660,087 |
| Biggest Countries by Area | 0 | - | 5.00 | 932,268 |
| Northernmost Countries | 0 | - | 4.99 | 326,937 |
| Countries of South America | 0 | - | 5.00 | 792,292 |
| Countries of Oceania | 0 | - | 5.00 | 892,574 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,147,816 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,570,542 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,702 |
| Countries with Megacities | 0 | - | 4.99 | 196,956 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,306 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,810 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,198 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,769 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,633 |
| Countries by Official Language | 0 | - | 4.96 | 170,703 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,018 |
| Countries in their Native Language | 0 | - | 4.98 | 178,189 |
| Independence from Whom | 0 | - | 4.99 | 185,390 |
| Subdivisions by Country | 0 | - | 4.82 | 46,416 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,333 |
| Megadiverse Countries | 0 | - | 4.96 | 125,263 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,266 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,625 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,358 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,500 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,099 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,788 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,063 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,004 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,317 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,739 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,560 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,958 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,933 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,503 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,227 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 82,017 |
| World Map Quiz | 0 | - | 4.90 | 49,288 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 81,427 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,583 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,832 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,928 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,429 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,250 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,518 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,216 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,886 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,390 |
| Widest Countries East to West | 0 | - | 4.93 | 119,307 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,803 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,933 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,620 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,360 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,772 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,102 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,436 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,032 |
| Countries with Double Letters | 0 | - | 4.96 | 68,229 |
| Countries that End in N | 0 | - | 4.93 | 132,567 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,594 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,902 |
| Countries with W | 0 | - | 4.97 | 122,625 |
| Countries with Z | 0 | - | 4.98 | 244,291 |
| Countries with Letters Missing | 0 | - | 4.97 | 161,135 |
| Countries That End in U | 0 | - | 4.95 | 107,502 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,371 |
| Countries that End in O | 0 | - | 4.92 | 146,877 |
| Countries that End in R | 0 | - | 4.85 | 96,446 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,209 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,243 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,708 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,183 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,239 |
| Countries That End in Y | 0 | - | 4.90 | 161,603 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,926 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,709 |
| Countries that End in I | 0 | - | 4.92 | 114,478 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,479 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,249 |
| Countries That End in NIA | 0 | - | 4.93 | 100,810 |
| Countries That End in BIA | 0 | - | 4.91 | 126,029 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,207 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,703 |
| Countries That End in RIA | 0 | - | 4.90 | 100,924 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,403 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,598 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,617 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,500 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,309 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,193 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,672 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,792 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,658 |
| Countries that End in L | 0 | - | 4.95 | 134,235 |
| "Land" Countries | 0 | - | 4.98 | 289,108 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,761 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,168 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,244 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,152 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,568 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,771 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,070 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,415 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 132,706 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,798 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,817 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,851 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,040 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,281 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,012 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,310,640 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,483 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,061,541 |
| One Border Countries | 0 | - | 4.98 | 409,805 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,774 |
| Top-Producing Countries | 0 | - | 4.71 | 100,159 |
| Country Codes Quiz | 0 | - | 4.45 | 77,168 |
| Countries on the Equator | 0 | - | 4.78 | 134,240 |
| Separatist Movements | 0 | - | 4.45 | 42,654 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,886 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,523 |
| Westernmost Countries | 0 | - | 4.50 | 47,495 |
| Easternmost Countries | 0 | - | 4.76 | 60,413 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 37,051 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,451 |
| Indochina Countries | 0 | - | 4.72 | 62,795 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,064 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,856 |
| Highest Foreign Aid Recipients | 0 | - | 4.58 | 42,398 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,137 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,942 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,693 |
| Countries that are the Source of Refugees | 0 | - | 4.67 | 56,435 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,387 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,014 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,005 |
| Flyover Countries | 0 | - | 4.66 | 46,920 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,668 |
| Countries with the Most Coral Reefs | 0 | - | 4.66 | 37,493 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,233 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,824 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,465 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,263 |
