| Spanish-Speaking Countries | 0 | - | 4.95 | 377,135 |
| Countries by Official Language | 0 | - | 4.95 | 196,292 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,033 |
| Countries in their Native Language | 0 | - | 4.99 | 200,010 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,194 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,772 |
| Landlocked Countries | 0 | - | 4.99 | 427,558 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,993,385 |
| French-Speaking Countries | 0 | - | 4.85 | 271,955 |
| German-Speaking Countries | 0 | - | 4.92 | 146,108 |
| Spanish to English Country Names | 0 | - | 4.86 | 34,063 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,062 |
| Himalayan Countries | 0 | - | 4.93 | 140,955 |
| Andean Countries | 0 | - | 4.94 | 85,865 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,973 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,588 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,520 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,738 |
| Danube Countries | 0 | - | 4.97 | 72,588 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,847 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,002 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,501 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,973 |
| European Landlocked Countries | 0 | - | 4.99 | 147,807 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,579 |
| Countries with the Most Species | 0 | - | 4.99 | 103,663 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,686 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,826 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,965 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,946 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,699 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,156 |
| Countries in the Alps | 0 | - | 4.87 | 119,022 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,075 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,215 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,082 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,207 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,177 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,413 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,629 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,022 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,529 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,339 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,969 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,846 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,694 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,946 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,048 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,208 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,759 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,670 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,874 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,472 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,589 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,635 |
| Largest Countries By Category | 0 | - | 4.97 | 159,141 |
| Countries by Countries | 0 | - | 4.97 | 63,834 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,494 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,454 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,716 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,566 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,589 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,268 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,814,577 |
| Top 10 Countries with the Most Spanish Speakers | 0 | - | 4.95 | 125,009 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,896 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,542 |
| Island Countries | 0 | - | 4.99 | 713,113 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,536 |
| Northernmost Countries | 0 | - | 4.99 | 364,753 |
| Countries of South America | 0 | - | 5.00 | 934,731 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,008 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,120 |
| "Land" Countries | 0 | - | 4.98 | 339,121 |
| Top World Languages | 0 | - | 4.92 | 831,756 |
| 15 Most Populous Countries that Speak a Romance Language | 0 | - | 4.75 | 128,495 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,001 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,596 |
| Countries with Megacities | 0 | - | 4.99 | 268,063 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,246 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,386 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,567 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,488 |
| Independence from Whom | 0 | - | 4.99 | 213,483 |
| Subdivisions by Country | 0 | - | 4.87 | 50,678 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,731 |
| Megadiverse Countries | 0 | - | 4.96 | 149,594 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,591 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,834 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,266 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,520 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,944 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,348 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,643 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,196 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,292 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,850 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,510 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,524 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,236 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,658 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,998 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,836 |
| World Map Quiz | 0 | - | 4.81 | 65,965 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,073 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,848 |
| Countries by Founding Story | 0 | - | 4.95 | 77,932 |
| Countries by Road Signs | 0 | - | 4.98 | 54,476 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,587 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,271 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,745 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,016 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,594 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,708 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,887 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,781 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,993 |
| Widest Countries East to West | 0 | - | 4.92 | 130,892 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,451 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,579 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,181 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,281 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,638 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,930 |
| Countries with Double Letters | 0 | - | 4.96 | 97,736 |
| Countries that End in N | 0 | - | 4.95 | 172,727 |
| Countries with Five Letters | 0 | - | 4.96 | 284,773 |
| Countries with Six Letters | 0 | - | 4.94 | 215,063 |
| Countries with W | 0 | - | 4.96 | 161,386 |
| Countries with Z | 0 | - | 4.98 | 293,134 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,757 |
| Countries That End in U | 0 | - | 4.95 | 121,440 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,509 |
| Countries that End in O | 0 | - | 4.92 | 160,411 |
| Countries that End in R | 0 | - | 4.87 | 119,304 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,080 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,226 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,306 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,272 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,945 |
| Countries That End in Y | 0 | - | 4.91 | 186,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,467 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,464 |
| Countries that End in I | 0 | - | 4.94 | 135,452 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,410 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,169 |
| Countries That End in NIA | 0 | - | 4.92 | 110,181 |
| Countries That End in BIA | 0 | - | 4.93 | 149,777 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,981 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,933 |
| Countries That End in RIA | 0 | - | 4.93 | 127,186 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,576 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,032 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,442 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,907 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,465 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,944 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,496 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,617 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,095 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,760 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,951 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,663 |
| Countries that End in L | 0 | - | 4.94 | 157,281 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,730 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,388 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,909 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,176 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,563 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,723 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,349 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,555 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,455 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,232 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,346 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,307 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,979 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,886 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,383 |
| Places in their Native Language #1 | 0 | - | 4.85 | 243,681 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,557 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,109 |
| One Border Countries | 0 | - | 4.98 | 472,743 |
| Countries With the Most Italian Speakers | 0 | - | 4.49 | 58,334 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,854,775 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,661,526 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,493 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,582 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,870 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,107 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,398 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,752 |
| Capitals in their Native Languages | 0 | - | 4.95 | 133,995 |
| Countries by National Anthem | 0 | - | 4.92 | 71,447 |
| NATO Countries | 0 | - | 4.98 | 284,151 |
| EU Countries Quiz | 0 | - | 4.99 | 279,070 |
| Recently Independent Countries | 0 | - | 4.98 | 160,556 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,270 |
