| Landlocked Countries Quiz | 0 | - | 4.99 | 324,253 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,971,707 |
| Members of the Arab League | 0 | - | 4.85 | 62,164 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,088 |
| Himalayan Countries | 0 | - | 4.94 | 104,939 |
| Andean Countries | 0 | - | 4.91 | 58,200 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,156 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,400 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,763 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,069 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,326 |
| Danube Countries | 0 | - | 4.97 | 56,654 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,696 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,856 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,260 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,383 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,575 |
| European Landlocked Countries | 0 | - | 4.99 | 115,521 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,392 |
| Countries with the Most Species | 0 | - | 4.99 | 89,534 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,376 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,687 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,017 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,299 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,427 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,710 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,165 |
| Countries in the Alps | 0 | - | 4.84 | 102,684 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,339 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,202 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,600 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,284 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,995 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,578 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,646 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,159 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,328 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,668 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,448 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,603 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,679 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,513 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,987 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,490 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,125 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,353 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,403 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,434 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,955 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,293 |
| Largest Countries By Category | 0 | - | 4.96 | 144,945 |
| Countries by Countries | 0 | - | 4.96 | 54,664 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,717 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,236 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,075,911 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,271 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 355,756 |
| Island Countries Quiz | 0 | - | 4.99 | 660,864 |
| Biggest Countries by Area | 0 | - | 5.00 | 933,712 |
| Northernmost Countries | 0 | - | 4.99 | 327,332 |
| Countries of South America | 0 | - | 5.00 | 794,061 |
| Countries of Oceania | 0 | - | 5.00 | 894,488 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,155,922 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,574,498 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,045 |
| Countries with Megacities | 0 | - | 4.99 | 197,468 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,730 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,055 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,537 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,006 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,169 |
| Countries by Official Language | 0 | - | 4.96 | 172,669 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,416 |
| Countries in their Native Language | 0 | - | 4.98 | 178,403 |
| Independence from Whom | 0 | - | 4.99 | 185,730 |
| Subdivisions by Country | 0 | - | 4.82 | 46,452 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,533 |
| Megadiverse Countries | 0 | - | 4.96 | 125,356 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,498 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,714 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,390 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,627 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,163 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,958 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,148 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,062 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,358 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,862 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,621 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,031 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,972 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,563 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,296 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,398 |
| World Map Quiz | 0 | - | 4.90 | 49,473 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,537 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,920 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,018 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,126 |
| Countries With the Most Languages | 0 | - | 4.91 | 173,825 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,378 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,675 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,381 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,017 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,495 |
| Widest Countries East to West | 0 | - | 4.93 | 119,428 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,834 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,084 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,687 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,635 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,409 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,230 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,478 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,069 |
| Countries with Double Letters | 0 | - | 4.96 | 68,530 |
| Countries that End in N | 0 | - | 4.93 | 132,860 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,924 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,204 |
| Countries with W | 0 | - | 4.97 | 122,826 |
| Countries with Z | 0 | - | 4.98 | 244,601 |
| Countries with Letters Missing | 0 | - | 4.97 | 166,781 |
| Countries That End in U | 0 | - | 4.95 | 107,621 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,635 |
| Countries that End in O | 0 | - | 4.92 | 146,994 |
| Countries that End in R | 0 | - | 4.85 | 96,516 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,283 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,514 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,869 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,280 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,359 |
| Countries That End in Y | 0 | - | 4.90 | 161,673 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,116 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,845 |
| Countries that End in I | 0 | - | 4.92 | 114,528 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,649 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,336 |
| Countries That End in NIA | 0 | - | 4.93 | 100,906 |
| Countries That End in BIA | 0 | - | 4.91 | 126,163 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,337 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,820 |
| Countries That End in RIA | 0 | - | 4.90 | 101,031 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,523 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,985 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,806 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,702 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,501 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,310 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,802 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,881 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,839 |
| Countries that End in L | 0 | - | 4.95 | 134,346 |
| "Land" Countries | 0 | - | 4.98 | 289,331 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,965 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,192 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,343 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,233 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,674 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,041 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,532 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,548 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,167 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 194,023 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,953 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,925 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,102 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,367 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,105 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,221 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,799 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,066,842 |
| One Border Countries | 0 | - | 4.98 | 410,384 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,884 |
| Top-Producing Countries | 0 | - | 4.71 | 100,228 |
| Country Codes Quiz | 0 | - | 4.45 | 77,230 |
| Countries on the Equator | 0 | - | 4.78 | 134,322 |
| Separatist Movements | 0 | - | 4.45 | 42,710 |
| Prime Meridian Countries | 0 | - | 4.64 | 51,919 |
| Next Country Alphabetically | 0 | - | 4.76 | 68,580 |
| Westernmost Countries | 0 | - | 4.50 | 47,535 |
| Easternmost Countries | 0 | - | 4.76 | 60,454 |
| Countries With the Most ISIS Fighters | 0 | - | 4.56 | 37,095 |
| Top 10 Most Famous Island Countries | 0 | - | 4.70 | 98,588 |
| Indochina Countries | 0 | - | 4.72 | 62,850 |
| Atlantic Ocean Island Countries | 0 | - | 4.55 | 63,093 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 90,932 |
| Highest Foreign Aid Recipients | 0 | - | 4.71 | 42,418 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,169 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.76 | 45,978 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 42,753 |
| Countries that are the Source of Refugees | 0 | - | 4.66 | 56,502 |
| Most Populous Countries By Category | 0 | - | 4.64 | 61,463 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,095 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.70 | 45,077 |
| Flyover Countries | 0 | - | 4.66 | 47,235 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 66,785 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,531 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 42,341 |
| Most Recent Countries to Join the United Nations | 0 | - | 4.53 | 31,844 |
| Countries by Total Area of Bordering Countries | 0 | - | 4.79 | 49,538 |
| Countries with the Most Light Pollution | 0 | - | 4.54 | 44,323 |
