| Countries with Double Letters | 0 | - | 4.96 | 67,016 |
| Countries that End in N | 0 | - | 4.94 | 131,462 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 227,930 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,719 |
| Countries with W | 0 | - | 4.97 | 121,743 |
| Countries with Z | 0 | - | 4.98 | 242,561 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,664 |
| Countries That End in U | 0 | - | 4.94 | 107,004 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,382 |
| Countries that End in O | 0 | - | 4.92 | 146,425 |
| Countries that End in R | 0 | - | 4.86 | 96,131 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,892 |
| Countries Ending in "IA" | 0 | - | 4.99 | 169,649 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 154,917 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,618 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,546 |
| Countries That End in Y | 0 | - | 4.90 | 160,828 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,698 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,876 |
| Countries that End in I | 0 | - | 4.92 | 114,176 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,486 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,838 |
| Countries That End in NIA | 0 | - | 4.93 | 100,347 |
| Countries That End in BIA | 0 | - | 4.91 | 125,395 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,418 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,081 |
| Countries That End in RIA | 0 | - | 4.89 | 100,493 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,790 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 198,801 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,696 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 109,498 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,425 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,578 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 95,965 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,410 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,841 |
| Countries that End in L | 0 | - | 4.95 | 133,403 |
| "Land" Countries | 0 | - | 4.98 | 287,973 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,829 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,081 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,237 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 317,742 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,482,653 |
| Countries with Four Letters | 0 | - | 4.99 | 374,472 |
| Countries on the Equator | 0 | - | 4.82 | 132,673 |
| Members of the Arab League | 0 | - | 4.82 | 59,357 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,195 |
| Himalayan Countries | 0 | - | 4.95 | 102,538 |
| Andean Countries | 0 | - | 4.90 | 56,975 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,823 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,594 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,916 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,565 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,756 |
| Danube Countries | 0 | - | 4.97 | 56,367 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,416 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,605 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,372 |
| Countries with the Worst Passports | 0 | - | 4.86 | 48,804 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,418 |
| European Landlocked Countries | 0 | - | 4.99 | 114,850 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,785 |
| Countries with the Most Species | 0 | - | 4.99 | 89,091 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,859 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,450 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,826 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,773 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,135 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,467 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,702 |
| Countries in the Alps | 0 | - | 4.82 | 101,861 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,664 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,844 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,134 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,748 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,389 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,079 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,069 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,772 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,079 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,181 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,924 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,339 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,422 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,003 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,515 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,001 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,664 |
| Countries with the Most Climate Zones | 0 | - | 4.97 | 60,960 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 52,975 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 192,875 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,446 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 41,976 |
| Largest Countries By Category | 0 | - | 4.96 | 143,934 |
| Countries by Countries | 0 | - | 4.96 | 54,107 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,021,012 |
| Country Flags with the Most White | 0 | - | 4.90 | 107,715 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,390 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,376 |
| Bordering Countries Beginning With the Same Letter | 0 | - | 4.99 | 115,949 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 178,090 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,663 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 351,924 |
| Island Countries Quiz | 0 | - | 4.99 | 638,907 |
| Biggest Countries by Area | 0 | - | 5.00 | 925,132 |
| Northernmost Countries | 0 | - | 4.99 | 325,383 |
| Countries of South America | 0 | - | 5.00 | 784,061 |
| Countries of Oceania | 0 | - | 5.00 | 882,532 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,110,808 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,552,570 |
| Countries with J | 0 | - | 4.59 | 168,057 |
| Add A Letter - Make a Country | 0 | - | 4.79 | 67,678 |
| Countries by Consonants | 0 | - | 4.44 | 72,434 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,217 |
| Countries with Megacities | 0 | - | 4.99 | 194,885 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,557 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 96,901 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,757 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,749 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,203 |
| Countries by Official Language | 0 | - | 4.95 | 153,548 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 246,877 |
| Countries in their Native Language | 0 | - | 4.98 | 177,049 |
| Independence from Whom | 0 | - | 4.99 | 183,714 |
| Subdivisions by Country | 0 | - | 4.82 | 46,188 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,195 |
| Megadiverse Countries | 0 | - | 4.96 | 124,786 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,028 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,032 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,136 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,130 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,742 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 76,841 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,341 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,516 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 40,992 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 42,934 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,838 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,380 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,495 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 67,962 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,761 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,185 |
| World Map Quiz | 0 | - | 4.90 | 48,173 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 110,757 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,790 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,378 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,139 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,095 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,661 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,582 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,901 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,496 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,332 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,865 |
| Widest Countries East to West | 0 | - | 4.93 | 118,748 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,686 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 157,933 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,112 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,815 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 117,684 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,547 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,269 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,868 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,787 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,750 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,124 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,301 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 157,517 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,719 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 131,655 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,072 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,006 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,446 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,687 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,905 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,571 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,302,574 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,629 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,036,561 |
| One Border Countries | 0 | - | 4.98 | 406,739 |
| Top 15 Most Populous Countries Ending in "IA" | 0 | - | 4.75 | 92,467 |
| Most Similar Country Names | 0 | - | 4.15 | 43,445 |
| Longest Country Name A-Z | 0 | - | 4.36 | 36,564 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,359,020 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 65,393 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 243,519 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,268 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,504 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 64,442 |
| Countries by National Anthem | 0 | - | 4.94 | 61,641 |
| NATO Countries Quiz | 0 | - | 4.98 | 223,761 |
| EU Countries Quiz | 0 | - | 4.99 | 226,195 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 143,642 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,193 |
| Countries That Use the Euro | 0 | - | 4.91 | 61,593 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 224,392 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 216,088 |
| German-Speaking Countries | 0 | - | 4.87 | 117,173 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,338 |
