| Landlocked Countries Quiz | 0 | - | 4.99 | 334,542 |
| Countries of the World Quiz | 0 | - | 5.00 | 41,777,881 |
| Members of the Arab League | 0 | - | 4.86 | 66,379 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,549 |
| Himalayan Countries | 0 | - | 4.94 | 108,501 |
| Andean Countries | 0 | - | 4.91 | 60,259 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,424 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,879 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,502 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,868 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,289 |
| Danube Countries | 0 | - | 4.96 | 57,245 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,255 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,312 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,747 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,436 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,073 |
| European Landlocked Countries | 0 | - | 4.99 | 137,239 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,841 |
| Countries with the Most Species | 0 | - | 4.99 | 89,866 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,374 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,033 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,326 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,085 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,898 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,143 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,951 |
| Countries in the Alps | 0 | - | 4.84 | 103,903 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,468 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,590 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,305 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,402 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,925 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,376 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,576 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,791 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,712 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,440 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,201 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,041 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,037 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,603 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,695 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,269 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,634 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,977 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,067 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 202,734 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,490 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,855 |
| Largest Countries By Category | 0 | - | 4.97 | 146,477 |
| Countries by Countries | 0 | - | 4.95 | 55,639 |
| Country Flags with the Most White | 0 | - | 4.90 | 126,595 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,221 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,658 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,173,699 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,230,107 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,184 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 362,791 |
| Island Countries Quiz | 0 | - | 4.99 | 668,814 |
| Biggest Countries by Area | 0 | - | 5.00 | 947,784 |
| Northernmost Countries | 0 | - | 4.99 | 330,978 |
| Countries of South America | 0 | - | 5.00 | 810,243 |
| Countries of Oceania | 0 | - | 5.00 | 914,084 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,612,077 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,083 |
| Countries with Megacities | 0 | - | 4.99 | 201,907 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,428 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,987 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,282 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 65,911 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,138 |
| Countries by Official Language | 0 | - | 4.96 | 175,277 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,321 |
| Countries in their Native Language | 0 | - | 4.98 | 180,630 |
| Independence from Whom | 0 | - | 4.99 | 189,421 |
| Subdivisions by Country | 0 | - | 4.84 | 46,900 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,665 |
| Megadiverse Countries | 0 | - | 4.96 | 126,823 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 93,951 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,601 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,833 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,370 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,902 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,666 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,052 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,731 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,861 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,092 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,276 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,955 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,493 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,410 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,039 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,580 |
| World Map Quiz | 0 | - | 4.90 | 51,488 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 118,570 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,751 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,803 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,844 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 109,994 |
| Countries With the Most Languages | 0 | - | 4.90 | 177,802 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,704 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,089 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 88,312 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 55,103 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,590 |
| Widest Countries East to West | 0 | - | 4.93 | 120,565 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,122 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,554 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,837 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,422 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,862 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,669 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,494 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,803 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,416 |
| Countries with Double Letters | 0 | - | 4.96 | 71,828 |
| Countries that End in N | 0 | - | 4.94 | 136,014 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 233,891 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 190,583 |
| Countries with W | 0 | - | 4.96 | 125,675 |
| Countries with Z | 0 | - | 4.98 | 264,700 |
| Countries with Letters Missing | 0 | - | 4.97 | 169,695 |
| Countries That End in U | 0 | - | 4.95 | 109,349 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,392 |
| Countries that End in O | 0 | - | 4.92 | 148,656 |
| Countries that End in R | 0 | - | 4.85 | 97,321 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,101 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,198 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,714 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,705 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,646 |
| Countries That End in Y | 0 | - | 4.90 | 162,421 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,006 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,391 |
| Countries that End in I | 0 | - | 4.92 | 115,204 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,645 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,391 |
| Countries That End in NIA | 0 | - | 4.92 | 101,826 |
| Countries That End in BIA | 0 | - | 4.91 | 127,317 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,170 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 110,981 |
| Countries That End in RIA | 0 | - | 4.90 | 101,900 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,770 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 204,627 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,634 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,772 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,306 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,910 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,852 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,180 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,695 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,508 |
| Countries that End in L | 0 | - | 4.95 | 135,851 |
| "Land" Countries | 0 | - | 4.98 | 292,362 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,289 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,893 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,371 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,082 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,628 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,123 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,031 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,831 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 134,937 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,441 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,591 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,630 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,318 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,285 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,385 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,329,103 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,426 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,117,996 |
| One Border Countries | 0 | - | 4.98 | 415,829 |
| Top-Producing Countries | 0 | - | 4.71 | 100,789 |
| Country Codes Quiz | 0 | - | 4.45 | 78,295 |
| Countries on the Equator | 0 | - | 4.78 | 135,196 |
| Separatist Movements | 0 | - | 4.45 | 43,143 |
| Prime Meridian Countries | 0 | - | 4.63 | 52,164 |
| Next Country Alphabetically | 0 | - | 4.75 | 80,908 |
| Westernmost Countries | 0 | - | 4.50 | 47,893 |
| Easternmost Countries | 0 | - | 4.76 | 60,809 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 37,516 |
| Top 10 Most Famous Island Countries | 0 | - | 4.71 | 100,352 |
| Indochina Countries | 0 | - | 4.72 | 63,335 |
| Atlantic Ocean Island Countries | 0 | - | 4.54 | 63,375 |
| Countries With the Most Conflict Deaths | 0 | - | 4.64 | 92,137 |
| Highest Foreign Aid Recipients | 0 | - | 4.70 | 42,709 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 55,491 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.75 | 46,321 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.45 | 43,298 |
| Countries that are the Source of Refugees | 0 | - | 4.69 | 57,120 |
| Most Populous Countries By Category | 0 | - | 4.57 | 62,115 |
| Countries with the Most Turkic People | 0 | - | 4.80 | 42,620 |
| Countries Most-Mentioned by the New York Times | 0 | - | 4.66 | 45,723 |
| Flyover Countries | 0 | - | 4.65 | 47,920 |
| Top 50 Countries by Area - In Order | 0 | - | 4.76 | 67,795 |
| Countries with the Most Coral Reefs | 0 | - | 4.70 | 37,911 |
| Countries Without a U.S. Embassy | 0 | - | 4.58 | 43,133 |
