| Landlocked Countries | 0 | - | 4.99 | 422,990 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,662,020 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,938 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,032 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,354 |
| Countries with Fjords | 0 | - | 4.94 | 101,110 |
| Countries with the Most Venomous Animal Species | 0 | - | 4.87 | 87,356 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,011 |
| Himalayan Countries | 0 | - | 4.95 | 139,176 |
| Andean Countries | 0 | - | 4.93 | 84,871 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,089 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,227 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,671 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,975 |
| Danube Countries | 0 | - | 4.97 | 72,131 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,184 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,537 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,527 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,037 |
| European Landlocked Countries | 0 | - | 4.99 | 147,272 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,834 |
| Countries with the Most Species | 0 | - | 4.99 | 103,343 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,959 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,646 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,766 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,615 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,364 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,781 |
| Countries in the Alps | 0 | - | 4.87 | 118,360 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,741 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,280 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,754 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,711 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,632 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,038 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,812 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,603 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,248 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,952 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,719 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,588 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,320 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,561 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,633 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,155 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,399 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,725 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,244 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,488 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,420 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,308 |
| Largest Countries By Category | 0 | - | 4.97 | 158,393 |
| Countries by Countries | 0 | - | 4.96 | 63,359 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,838 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,323 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,592 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,791 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,785,713 |
| Countries with the Most Sheep | 0 | - | 4.92 | 103,445 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,488 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,831 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,976 |
| Island Countries | 0 | - | 4.99 | 711,411 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,127 |
| Northernmost Countries | 0 | - | 4.99 | 362,472 |
| Countries of South America | 0 | - | 5.00 | 928,752 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,681 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,880,439 |
| "Land" Countries | 0 | - | 4.98 | 337,628 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,386,171 |
| Countries With Two or More Bear Species | 0 | - | 4.90 | 22,813 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,192 |
| Countries with Megacities | 0 | - | 4.99 | 265,279 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,015 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,631 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,270 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,706 |
| Countries by Official Language | 0 | - | 4.95 | 195,464 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,665 |
| Countries in their Native Language | 0 | - | 4.99 | 199,240 |
| Independence from Whom | 0 | - | 4.99 | 212,327 |
| Subdivisions by Country | 0 | - | 4.87 | 50,483 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,904 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,268 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,412 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,292 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,139 |
| Countries That Touch the Baltic Sea | 0 | - | 4.98 | 116,100 |
| North Sea Countries | 0 | - | 4.92 | 87,539 |
| Black Sea Countries | 0 | - | 4.87 | 60,673 |
| Countries That Touch the Red Sea | 0 | - | 4.90 | 65,485 |
| Caspian Sea Countries | 0 | - | 4.91 | 63,582 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,266 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,659 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,613 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,415 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,705 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,181 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,897 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,948 |
| Countries With No Rivers | 0 | - | 4.96 | 76,970 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,266 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,012 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,423 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,543 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,521 |
| World Map Quiz | 0 | - | 4.81 | 65,246 |
| Countries with the Shortest Coastlines | 0 | - | 4.89 | 67,306 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,817 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,453 |
| Name a Valid Country on Each River | 0 | - | 4.95 | 62,378 |
| Countries by Founding Story | 0 | - | 4.95 | 77,457 |
| Countries by Road Signs | 0 | - | 4.98 | 54,108 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,300 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,399 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,112 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,733 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,557 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,010 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,120 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,395 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,494 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,647 |
| Widest Countries East to West | 0 | - | 4.92 | 129,747 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,480 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,508 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,308 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,835 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,695 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,969 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,409 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,821 |
| Countries with Double Letters | 0 | - | 4.96 | 96,469 |
| Countries that End in N | 0 | - | 4.95 | 171,354 |
| Countries with Five Letters | 0 | - | 4.96 | 282,895 |
| Countries with Six Letters | 0 | - | 4.94 | 213,808 |
| Countries with W | 0 | - | 4.96 | 160,496 |
| Countries with Z | 0 | - | 4.98 | 291,719 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,855 |
| Countries That End in U | 0 | - | 4.95 | 120,938 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,633 |
| Countries that End in O | 0 | - | 4.92 | 159,591 |
| Countries that End in R | 0 | - | 4.87 | 119,021 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,783 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,304 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,806 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,578 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,483 |
| Countries That End in Y | 0 | - | 4.91 | 185,940 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,054 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,982 |
| Countries that End in I | 0 | - | 4.94 | 135,167 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,241 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,877 |
| Countries That End in NIA | 0 | - | 4.92 | 109,856 |
| Countries That End in BIA | 0 | - | 4.93 | 149,305 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,213 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,523 |
| Countries That End in RIA | 0 | - | 4.93 | 126,878 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,109 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,881 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,844 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,275 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,819 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,638 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,109 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,467 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,624 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,485 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,404 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,095 |
| Countries that End in L | 0 | - | 4.94 | 156,920 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,254 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,288 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,089 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,018 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,061 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,936 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,802 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,226 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,946 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,600 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,965 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,139 |
| Countries with the Most Wolves | 0 | - | 4.92 | 108,349 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,735 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,999 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,829 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,378 |
| One Border Countries | 0 | - | 4.98 | 470,445 |
| Natural Features of Countries #2 | 0 | - | 4.55 | 37,567 |
| Countries with the Most Wild Elephants | 0 | - | 4.63 | 55,066 |
| Animal Populations of Countries | 0 | - | 4.52 | 43,960 |
| Five Countries with the Longest Coastline by Continent | 0 | - | 4.97 | 115,723 |
| Top 15 Countries with the Most Cows | 0 | - | 4.73 | 107,372 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,838,617 |
| Countries Farthest From the Sea | 0 | - | 4.98 | 74,857 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,638,052 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,036 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,427 |
