| Spanish-Speaking Countries | 0 | - | 4.95 | 360,125 |
| Countries by Official Language | 0 | - | 4.95 | 184,098 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 282,095 |
| Countries in their Native Language | 0 | - | 4.98 | 188,873 |
| Countries With the Most English Speakers | 0 | - | 4.89 | 122,169 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 382,313 |
| Countries of the World Quiz | 0 | - | 5.00 | 44,307,923 |
| French-Speaking Countries | 0 | - | 4.85 | 257,803 |
| German-Speaking Countries | 0 | - | 4.89 | 121,152 |
| Sahara Desert Countries | 0 | - | 4.97 | 145,398 |
| Himalayan Countries | 0 | - | 4.95 | 122,064 |
| Andean Countries | 0 | - | 4.92 | 68,592 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 56,595 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 112,956 |
| Coffee Producing Countries | 0 | - | 4.83 | 59,823 |
| Countries with Shrinking Populations | 0 | - | 4.92 | 59,223 |
| Danube Countries | 0 | - | 4.97 | 60,795 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 96,799 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 81,846 |
| Countries with the Best Passports | 0 | - | 4.81 | 80,418 |
| Countries with the Worst Passports | 0 | - | 4.92 | 64,686 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 138,086 |
| European Landlocked Countries | 0 | - | 4.99 | 140,973 |
| Partially Recognized Countries | 0 | - | 4.98 | 98,014 |
| Countries with the Most Species | 0 | - | 4.99 | 92,308 |
| Countries 197 to 205 | 0 | - | 4.87 | 63,407 |
| Tropic of Cancer Countries | 0 | - | 4.95 | 46,670 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 45,773 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 52,550 |
| Countries that Use the Peso | 0 | - | 4.88 | 56,319 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 69,925 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 53,608 |
| Countries in the Alps | 0 | - | 4.86 | 110,388 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 90,664 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 97,727 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 75,356 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 83,695 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 110,593 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.90 | 91,918 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 94,963 |
| Five Biggest Countries by Longitude | 0 | - | 4.90 | 49,813 |
| Biggest Country by Body of Water | 0 | - | 4.95 | 47,941 |
| Countries with the Most Container Port Traffic | 0 | - | 4.91 | 58,749 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 72,705 |
| Bridge and Tunnel Borders | 0 | - | 4.95 | 51,234 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.89 | 39,084 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 100,128 |
| Arctic Ocean Countries | 0 | - | 4.94 | 75,819 |
| Countries with the Most Grassland | 0 | - | 4.93 | 73,482 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 108,924 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 64,772 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 56,696 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 221,893 |
| World Countries - Blind Typing | 0 | - | 5.00 | 94,993 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 45,070 |
| Largest Countries By Category | 0 | - | 4.97 | 151,307 |
| Countries by Countries | 0 | - | 4.96 | 58,435 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,405,155 |
| Country Flags with the Most White | 0 | - | 4.87 | 132,046 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 60,649 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 46,322 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 83,910 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,473,560 |
| Spanish to English Country Names | 0 | - | 4.86 | 27,093 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.96 | 121,836 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 382,256 |
| Island Countries Quiz | 0 | - | 4.99 | 690,713 |
| Biggest Countries by Area | 0 | - | 5.00 | 989,610 |
| Northernmost Countries | 0 | - | 4.99 | 342,690 |
| Countries of South America | 0 | - | 5.00 | 862,730 |
| Countries of Oceania | 0 | - | 5.00 | 975,439 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,730,530 |
| Top World Languages | 0 | - | 4.91 | 768,604 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.70 | 108,870 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,257,245 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 158,869 |
| Countries with Megacities | 0 | - | 4.99 | 218,063 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 186,733 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 106,246 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 126,671 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 73,242 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 269,931 |
| Independence from Whom | 0 | - | 4.99 | 199,871 |
| Subdivisions by Country | 0 | - | 4.86 | 48,526 |
| Who Controlled These Colonies? | 0 | - | 4.90 | 123,756 |
| Megadiverse Countries | 0 | - | 4.96 | 130,505 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 121,756 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 49,330 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 155,467 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 59,491 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 86,815 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.94 | 149,103 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 80,431 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 43,421 |
| Countries by Sports League Revenue | 0 | - | 4.93 | 67,470 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 104,873 |
| Countries Furthest from the United States | 0 | - | 4.95 | 85,971 |
| Countries with the Highest HDI | 0 | - | 4.95 | 134,217 |
| Straight Shot to the Arctic Circle | 0 | - | 4.89 | 72,172 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 68,633 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 98,196 |
| World Map Quiz | 0 | - | 4.88 | 57,703 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 135,075 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 86,755 |
| Countries by Founding Story | 0 | - | 4.94 | 72,880 |
| Southernmost Countries of the World | 0 | - | 4.99 | 218,637 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 98,779 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 116,614 |
| Countries With the Most Languages | 0 | - | 4.89 | 189,304 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 92,556 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 88,606 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 93,618 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 58,383 |
| Tallest Countries North to South | 0 | - | 4.85 | 115,628 |
| Widest Countries East to West | 0 | - | 4.92 | 124,775 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 70,203 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 179,848 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 95,462 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 90,300 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 125,452 |
| Countries with the Most Desert | 0 | - | 4.93 | 123,372 |
| Countries by Contribution to UN Budget | 0 | - | 4.85 | 68,039 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 33,560 |
| Countries with Double Letters | 0 | - | 4.96 | 82,364 |
| Countries that End in N | 0 | - | 4.93 | 146,269 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 246,240 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 200,675 |
| Countries with W | 0 | - | 4.97 | 149,235 |
| Countries with Z | 0 | - | 4.98 | 276,178 |
| Countries with Letters Missing | 0 | - | 4.97 | 176,606 |
| Countries That End in U | 0 | - | 4.95 | 114,413 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 100,682 |
| Countries that End in O | 0 | - | 4.91 | 154,510 |
| Countries that End in R | 0 | - | 4.84 | 100,000 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 151,983 |
| Countries Ending in "IA" | 0 | - | 4.99 | 198,253 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 163,427 |
| Countries by Last Two Letters | 0 | - | 4.87 | 121,914 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 135,681 |
| Countries That End in Y | 0 | - | 4.91 | 182,178 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 189,357 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 127,585 |
| Countries that End in I | 0 | - | 4.92 | 117,490 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 158,493 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 92,258 |
| Countries That End in NIA | 0 | - | 4.92 | 105,175 |
| Countries That End in BIA | 0 | - | 4.92 | 142,816 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 161,342 |
| Countries Whose Names Start with Saint | 0 | - | 4.86 | 114,838 |
| Countries That End in RIA | 0 | - | 4.89 | 105,535 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 105,984 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 215,467 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 127,346 |
| Divided Country Name Puzzle #3 | 0 | - | 4.91 | 119,192 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 85,044 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 71,257 |
| Countries With One Word and Three A's | 0 | - | 4.94 | 48,670 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 98,184 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.97 | 120,077 |
| Countries that are Free from U.S.A. | 0 | - | 4.87 | 46,312 |
| Countries with the Word "And" | 0 | - | 4.98 | 89,930 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 47,848 |
| Countries that End in L | 0 | - | 4.94 | 151,863 |
| "Land" Countries | 0 | - | 4.98 | 299,760 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 197,659 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 83,956 |
| City to Country Quiz #1 | 0 | - | 4.96 | 150,624 |
| City to Country Quiz #3 | 0 | - | 4.87 | 104,782 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 75,652 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 219,312 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 192,465 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 122,120 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 140,917 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 216,011 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.97 | 147,223 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.88 | 68,744 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.82 | 105,999 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 84,876 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 59,816 |
| Places in their Native Language #1 | 0 | - | 4.85 | 231,731 |
| Places in their Native Language #2 | 0 | - | 4.89 | 119,201 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,381,592 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 364,816 |
| One Border Countries | 0 | - | 4.98 | 445,097 |
| Countries With the Most Italian Speakers | 0 | - | 4.49 | 54,058 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,631,960 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 81,891 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 257,419 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 115,957 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 107,681 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 88,191 |
| Countries by Population Range - Tile Select | 0 | - | 4.85 | 54,984 |
| Capitals in their Native Languages | 0 | - | 4.94 | 130,208 |
| Countries by National Anthem | 0 | - | 4.92 | 69,903 |
| NATO Countries Quiz | 0 | - | 4.98 | 257,751 |
| EU Countries Quiz | 0 | - | 4.99 | 254,557 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 152,266 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 80,793 |
| Countries That Use the Euro | 0 | - | 4.93 | 75,980 |
| Countries with the Most Military Troops | 0 | - | 4.96 | 267,138 |
