| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,786 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,163 |
| Landlocked Countries | 0 | - | 4.99 | 424,573 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,808 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,784,423 |
| Top 10 European Countries with the Highest Elevation | 0 | - | 4.83 | 91,458 |
| Top Rice-Producing Countries | 0 | - | 4.95 | 99,346 |
| Top Chocolate Growing Countries | 0 | - | 4.93 | 62,035 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,660 |
| Himalayan Countries | 0 | - | 4.94 | 139,789 |
| Andean Countries | 0 | - | 4.94 | 85,192 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,375 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,660 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,939 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,234 |
| Danube Countries | 0 | - | 4.97 | 72,274 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,422 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,711 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,868 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,364 |
| European Landlocked Countries | 0 | - | 4.99 | 147,462 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,096 |
| Countries with the Most Species | 0 | - | 4.99 | 103,489 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,241 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,710 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,823 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,750 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,482 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,908 |
| Countries in the Alps | 0 | - | 4.87 | 118,588 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,329 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,608 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,876 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,896 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,822 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,140 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,253 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,770 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,339 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,070 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,797 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,664 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,454 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,691 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,778 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,533 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,528 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,547 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,498 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,221 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,854 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,431 |
| Largest Countries By Category | 0 | - | 4.97 | 158,667 |
| Countries by Countries | 0 | - | 4.96 | 63,513 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,105 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,362 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,644 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,989 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,796,521 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,471 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,321 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,999 |
| Island Countries | 0 | - | 4.99 | 712,098 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,334 |
| Northernmost Countries | 0 | - | 4.99 | 363,425 |
| Countries of South America | 0 | - | 5.00 | 930,968 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,355 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,552 |
| "Land" Countries | 0 | - | 4.98 | 338,071 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,902 |
| Top 10 Countries with the Most Volcanoes | 0 | - | 4.53 | 77,616 |
| Top 10 Countries with the Most Time Zones | 0 | - | 4.68 | 155,918 |
| Top 10 Most Protestant European Countries | 0 | - | 4.49 | 36,733 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,390,846 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,830 |
| Countries with Megacities | 0 | - | 4.99 | 266,448 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,535 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,926 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,836 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,044 |
| Countries by Official Language | 0 | - | 4.95 | 195,781 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,321 |
| Countries in their Native Language | 0 | - | 4.99 | 199,563 |
| Independence from Whom | 0 | - | 4.99 | 212,784 |
| Subdivisions by Country | 0 | - | 4.87 | 50,571 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,241 |
| Megadiverse Countries | 0 | - | 4.96 | 135,199 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,768 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,484 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,386 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,184 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,448 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,768 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,930 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,511 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,782 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,224 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,221 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,315 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,379 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,106 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,517 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,636 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,048 |
| World Map Quiz | 0 | - | 4.81 | 65,469 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,649 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,591 |
| Countries by Founding Story | 0 | - | 4.95 | 77,685 |
| Countries by Road Signs | 0 | - | 4.98 | 54,261 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,010 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,953 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,439 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,248 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,294 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,417 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,609 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,622 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,183 |
| Widest Countries East to West | 0 | - | 4.92 | 130,332 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,565 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,113 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,471 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,985 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,872 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,368 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,866 |
| Countries with Double Letters | 0 | - | 4.96 | 96,823 |
| Countries that End in N | 0 | - | 4.95 | 171,701 |
| Countries with Five Letters | 0 | - | 4.96 | 283,413 |
| Countries with Six Letters | 0 | - | 4.94 | 214,183 |
| Countries with W | 0 | - | 4.96 | 160,757 |
| Countries with Z | 0 | - | 4.98 | 292,150 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,109 |
| Countries That End in U | 0 | - | 4.95 | 121,082 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,920 |
| Countries that End in O | 0 | - | 4.92 | 159,729 |
| Countries that End in R | 0 | - | 4.87 | 119,116 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,869 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,608 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,015 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,727 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,651 |
| Countries That End in Y | 0 | - | 4.91 | 186,029 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,307 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,149 |
| Countries that End in I | 0 | - | 4.94 | 135,259 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,474 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,982 |
| Countries That End in NIA | 0 | - | 4.92 | 109,967 |
| Countries That End in BIA | 0 | - | 4.93 | 149,472 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,402 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,673 |
| Countries That End in RIA | 0 | - | 4.93 | 126,990 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,276 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,305 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,040 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,471 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,047 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,743 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,237 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,514 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,796 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,588 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,594 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,277 |
| Countries that End in L | 0 | - | 4.94 | 157,044 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,034 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,318 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,928 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,593 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,287 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,242 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,015 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,351 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,146 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,832 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,129 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,194 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,336 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,030 |
| One Border Countries | 0 | - | 4.98 | 471,353 |
| Countries that Eat the Most Fish | 0 | - | 4.26 | 72,055 |
| Top 10 Countries with the Most Fishermen | 0 | - | 4.30 | 45,444 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,478 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,196 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,209 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,788 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,526 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,092 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,495 |
| Countries by National Anthem | 0 | - | 4.92 | 71,377 |
| NATO Countries | 0 | - | 4.98 | 282,877 |
| EU Countries Quiz | 0 | - | 4.99 | 277,145 |
| Recently Independent Countries | 0 | - | 4.98 | 159,825 |
| French-Speaking Countries | 0 | - | 4.85 | 271,453 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,008 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,432 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,780 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,209 |
