| Countries of the World Quiz | 0 | - | 5.00 | 46,910,262 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,537 |
| Landlocked Countries | 0 | - | 4.99 | 413,491 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,304 |
| Countries with the Most Malaria Deaths | 0 | - | 4.47 | 44,855 |
| Countries with Glaciers | 0 | - | 4.97 | 104,653 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,624 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,228 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,715,670 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,537 |
| Himalayan Countries | 0 | - | 4.95 | 135,318 |
| Andean Countries | 0 | - | 4.94 | 82,805 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,201 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,168 |
| Coffee Producing Countries | 0 | - | 4.81 | 65,876 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,584 |
| Danube Countries | 0 | - | 4.97 | 71,067 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 115,745 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,525 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,447 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,370 |
| European Landlocked Countries | 0 | - | 4.99 | 145,740 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,185 |
| Countries with the Most Species | 0 | - | 4.99 | 95,235 |
| Countries 197 to 205 | 0 | - | 4.87 | 69,321 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,197 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,365 |
| Countries that Use the Peso | 0 | - | 4.88 | 58,951 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,569 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 56,943 |
| Countries in the Alps | 0 | - | 4.86 | 116,801 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,549 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,239 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 77,996 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,408 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,144 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 94,988 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,559 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,742 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,221 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,040 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,193 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,037 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,445 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,730 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,743 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,037 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,628 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,251 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,758 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,223 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,644 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,597 |
| Largest Countries By Category | 0 | - | 4.97 | 156,739 |
| Countries by Countries | 0 | - | 4.96 | 62,247 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,361 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,959 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,329 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,757 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 323,756 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,080 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 401,786 |
| Island Countries | 0 | - | 4.99 | 707,574 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,039,322 |
| Northernmost Countries | 0 | - | 4.99 | 357,665 |
| Countries of South America | 0 | - | 5.00 | 914,514 |
| Countries of Oceania | 0 | - | 5.00 | 1,040,222 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,847,965 |
| "Land" Countries | 0 | - | 4.98 | 333,618 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,361,997 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,126 |
| Countries with Megacities | 0 | - | 4.99 | 246,778 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,048 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 111,928 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,474 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 79,816 |
| Countries by Official Language | 0 | - | 4.95 | 192,751 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,089 |
| Countries in their Native Language | 0 | - | 4.99 | 196,611 |
| Independence from Whom | 0 | - | 4.99 | 209,658 |
| Subdivisions by Country | 0 | - | 4.86 | 50,063 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,724 |
| Megadiverse Countries | 0 | - | 4.97 | 133,890 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,776 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,915 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,424 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,855 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,637 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 61,990 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 92,915 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,135 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,209 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,738 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,544 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,408 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,483 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,493 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,660 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,014 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,548 |
| World Map Quiz | 0 | - | 4.81 | 63,489 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 152,610 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,318 |
| Countries by Founding Story | 0 | - | 4.95 | 76,522 |
| Countries by Road Signs | 0 | - | 4.98 | 53,092 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,327 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 103,977 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 121,936 |
| Countries With the Most Languages | 0 | - | 4.90 | 199,716 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 109,843 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.89 | 93,052 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,266 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 60,938 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,327 |
| Widest Countries East to West | 0 | - | 4.92 | 128,595 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,215 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,195 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,562 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,681 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,620 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,029 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 69,050 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,576 |
| Countries with Double Letters | 0 | - | 4.97 | 93,367 |
| Countries that End in N | 0 | - | 4.94 | 156,692 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,661 |
| Countries with Six Letters | 0 | - | 4.93 | 210,332 |
| Countries with W | 0 | - | 4.97 | 158,209 |
| Countries with Z | 0 | - | 4.98 | 287,845 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,534 |
| Countries That End in U | 0 | - | 4.95 | 119,510 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,520 |
| Countries that End in O | 0 | - | 4.92 | 158,544 |
| Countries that End in R | 0 | - | 4.87 | 118,266 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,855 |
| Countries Ending in "IA" | 0 | - | 4.99 | 206,994 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,307 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,481 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 140,999 |
| Countries That End in Y | 0 | - | 4.90 | 185,194 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,350 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,668 |
| Countries that End in I | 0 | - | 4.94 | 134,403 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,175 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,185 |
| Countries That End in NIA | 0 | - | 4.92 | 108,997 |
| Countries That End in BIA | 0 | - | 4.92 | 147,702 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,048 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,475 |
| Countries That End in RIA | 0 | - | 4.93 | 126,068 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 109,991 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,163 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,507 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,883 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,345 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,923 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,106 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,635 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,495 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,810 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,118 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,800 |
| Countries that End in L | 0 | - | 4.94 | 155,713 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,124 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 84,985 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,505 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,285 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,419 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 246,872 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,071 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 125,908 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,171 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 223,363 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,515 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,609 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,168 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,417 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,313 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,434,882 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 377,575 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,800,612 |
| One Border Countries | 0 | - | 4.98 | 464,317 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,587,357 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,358 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 85,822 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 265,889 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 120,871 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,465 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,583 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,249 |
| Majority Muslim Countries | 0 | - | 4.98 | 368,474 |
| Countries by National Anthem | 0 | - | 4.92 | 71,020 |
| NATO Countries | 0 | - | 4.98 | 275,673 |
| EU Countries Quiz | 0 | - | 4.99 | 269,881 |
| Recently Independent Countries | 0 | - | 4.98 | 157,976 |
| French-Speaking Countries | 0 | - | 4.85 | 268,778 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,372 |
| Countries That Use the Euro | 0 | - | 4.96 | 102,959 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 284,888 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,234 |
