| Landlocked Countries Quiz | 0 | - | 4.99 | 322,017 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,806,089 |
| Members of the Arab League | 0 | - | 4.85 | 61,117 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,360 |
| Himalayan Countries | 0 | - | 4.94 | 104,243 |
| Andean Countries | 0 | - | 4.91 | 57,743 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,691 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,081 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,450 |
| Coffee Producing Countries | 0 | - | 4.81 | 53,893 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,148 |
| Danube Countries | 0 | - | 4.97 | 56,553 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,586 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,768 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,939 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,172 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,933 |
| European Landlocked Countries | 0 | - | 4.99 | 115,025 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,170 |
| Countries with the Most Species | 0 | - | 4.99 | 89,185 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,213 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,615 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,952 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,131 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,325 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,627 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,020 |
| Countries in the Alps | 0 | - | 4.83 | 102,418 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,130 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,728 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,449 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,105 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,789 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,400 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,459 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,043 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,237 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,521 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,260 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,498 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,596 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,328 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,822 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,320 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,602 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,241 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,270 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,341 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,465 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,185 |
| Largest Countries By Category | 0 | - | 4.96 | 144,591 |
| Countries by Countries | 0 | - | 4.95 | 54,488 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,057,269 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,602 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,945 |
| Bordering Countries by HDI Difference | 0 | - | 4.91 | 47,642 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,202 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 354,469 |
| Island Countries Quiz | 0 | - | 4.99 | 659,265 |
| Biggest Countries by Area | 0 | - | 5.00 | 930,933 |
| Northernmost Countries | 0 | - | 4.99 | 326,649 |
| Countries of South America | 0 | - | 5.00 | 790,652 |
| Countries of Oceania | 0 | - | 5.00 | 890,384 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,139,993 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,566,652 |
| Highest HDI Countries with Exceptions | 0 | - | 4.64 | 59,767 |
| Lowest HDI Countries with Exceptions | 0 | - | 4.66 | 40,893 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,413 |
| Countries with Megacities | 0 | - | 4.99 | 196,546 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 170,974 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,612 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,898 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,566 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,198 |
| Countries by Official Language | 0 | - | 4.95 | 154,643 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 248,352 |
| Countries in their Native Language | 0 | - | 4.98 | 177,763 |
| Independence from Whom | 0 | - | 4.99 | 185,087 |
| Subdivisions by Country | 0 | - | 4.82 | 46,374 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,143 |
| Megadiverse Countries | 0 | - | 4.96 | 125,163 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,809 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,533 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,307 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,881 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,037 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,611 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,954 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,926 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,278 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,593 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,486 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,880 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,422 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,144 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 81,681 |
| World Map Quiz | 0 | - | 4.90 | 49,065 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 81,295 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,359 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,706 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,773 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,078 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,162 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,412 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,086 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,759 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,276 |
| Widest Countries East to West | 0 | - | 4.93 | 119,194 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,784 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,810 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,567 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,257 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,657 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,005 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,404 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,005 |
| Countries with Double Letters | 0 | - | 4.96 | 67,949 |
| Countries that End in N | 0 | - | 4.93 | 132,325 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,279 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,685 |
| Countries with W | 0 | - | 4.97 | 122,458 |
| Countries with Z | 0 | - | 4.98 | 243,988 |
| Countries with Letters Missing | 0 | - | 4.97 | 155,315 |
| Countries That End in U | 0 | - | 4.94 | 107,395 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,127 |
| Countries that End in O | 0 | - | 4.92 | 146,793 |
| Countries that End in R | 0 | - | 4.86 | 96,358 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,144 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,961 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,512 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,064 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,084 |
| Countries That End in Y | 0 | - | 4.90 | 161,555 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,450 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,550 |
| Countries that End in I | 0 | - | 4.92 | 114,417 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,268 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,145 |
| Countries That End in NIA | 0 | - | 4.93 | 100,712 |
| Countries That End in BIA | 0 | - | 4.91 | 125,904 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,036 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,575 |
| Countries That End in RIA | 0 | - | 4.90 | 100,831 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,281 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,253 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,459 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,326 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,137 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,072 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,534 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,708 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,501 |
| Countries that End in L | 0 | - | 4.95 | 134,124 |
| "Land" Countries | 0 | - | 4.98 | 288,887 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,569 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,160 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,155 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,080 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,472 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,480 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 165,545 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,282 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 132,482 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,096 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,668 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,792 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,976 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,200 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,927 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,309,054 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 348,841 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,056,618 |
| One Border Countries | 0 | - | 4.98 | 409,027 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,647 |
| Five Highest HDI Countries by Continent | 0 | - | 4.50 | 53,055 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,385,193 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 65,943 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 244,660 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 108,806 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,826 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 68,474 |
| Countries by National Anthem | 0 | - | 4.95 | 61,792 |
| NATO Countries Quiz | 0 | - | 4.98 | 224,996 |
| EU Countries Quiz | 0 | - | 4.99 | 227,454 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,300 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,539 |
| Countries That Use the Euro | 0 | - | 4.92 | 62,544 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 225,540 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 217,115 |
| German-Speaking Countries | 0 | - | 4.88 | 117,412 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,725 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,059 |
| Solve the Secret Country #1 | 0 | - | 4.96 | 129,483 |
| Top Five Countries by Religion | 0 | - | 4.90 | 141,584 |
| Solve the Secret Country #2 | 0 | - | 4.91 | 87,713 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 81,476 |
| Olympic Host Countries | 0 | - | 4.98 | 161,544 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 98,638 |
| Anagram Chain - Countries | 0 | - | 4.98 | 96,405 |
| 10 Easternmost Countries in Europe | 0 | - | 4.85 | 91,858 |
