| Landlocked Countries | 0 | - | 4.99 | 427,825 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,015,587 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,183 |
| Himalayan Countries | 0 | - | 4.93 | 141,066 |
| Andean Countries | 0 | - | 4.94 | 85,925 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,031 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,665 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,581 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,776 |
| Danube Countries | 0 | - | 4.97 | 72,624 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,891 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,032 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,560 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,036 |
| European Landlocked Countries | 0 | - | 4.99 | 147,834 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,628 |
| Countries with the Most Species | 0 | - | 4.99 | 103,680 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,733 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,838 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,981 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,967 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,718 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,185 |
| Countries in the Alps | 0 | - | 4.87 | 119,068 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,152 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,269 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,231 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,203 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,435 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,046 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,544 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,359 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,987 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,856 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,719 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,972 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,073 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,295 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,772 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,852 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,924 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,613 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,705 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,648 |
| Largest Countries By Category | 0 | - | 4.97 | 159,209 |
| Countries by Countries | 0 | - | 4.97 | 63,869 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,548 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,465 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,722 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,304 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,434 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,150 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,214 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,722 |
| Island Countries | 0 | - | 4.99 | 713,271 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,869 |
| Northernmost Countries | 0 | - | 4.99 | 364,892 |
| Countries of South America | 0 | - | 5.00 | 935,082 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,571 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,060 |
| "Land" Countries | 0 | - | 4.98 | 339,208 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,693 |
| Countries with Megacities | 0 | - | 4.99 | 268,249 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,318 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,425 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,673 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,552 |
| Countries by Official Language | 0 | - | 4.95 | 196,356 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,115 |
| Countries in their Native Language | 0 | - | 4.99 | 200,060 |
| Independence from Whom | 0 | - | 4.99 | 213,576 |
| Subdivisions by Country | 0 | - | 4.87 | 50,684 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,775 |
| Megadiverse Countries | 0 | - | 4.96 | 149,846 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,228 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,864 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,274 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,570 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,967 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,388 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,664 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,303 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,924 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,530 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,536 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,255 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,681 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,017 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,799 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,926 |
| World Map Quiz | 0 | - | 4.81 | 65,993 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,234 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,872 |
| Countries by Founding Story | 0 | - | 4.95 | 77,960 |
| Countries by Road Signs | 0 | - | 4.98 | 54,505 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,657 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,307 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,779 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,093 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,629 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,746 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,911 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,791 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,026 |
| Widest Countries East to West | 0 | - | 4.92 | 130,915 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,485 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,591 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,209 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,505 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,665 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,809 |
| Countries that End in N | 0 | - | 4.95 | 172,806 |
| Countries with Five Letters | 0 | - | 4.96 | 284,879 |
| Countries with Six Letters | 0 | - | 4.94 | 215,146 |
| Countries with W | 0 | - | 4.96 | 161,446 |
| Countries with Z | 0 | - | 4.98 | 293,209 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,818 |
| Countries That End in U | 0 | - | 4.95 | 121,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,572 |
| Countries that End in O | 0 | - | 4.92 | 160,434 |
| Countries that End in R | 0 | - | 4.87 | 119,320 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,093 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,289 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,783 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,310 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,993 |
| Countries That End in Y | 0 | - | 4.91 | 186,213 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,537 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,500 |
| Countries that End in I | 0 | - | 4.94 | 135,463 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,474 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,189 |
| Countries That End in NIA | 0 | - | 4.92 | 110,206 |
| Countries That End in BIA | 0 | - | 4.93 | 149,796 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,013 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,962 |
| Countries That End in RIA | 0 | - | 4.93 | 127,205 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,600 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,097 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,486 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,948 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,499 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,966 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,531 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,626 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,139 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,787 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,987 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,697 |
| Countries that End in L | 0 | - | 4.94 | 157,304 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,851 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,395 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,925 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,193 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,580 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,775 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,398 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,579 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,490 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,283 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,371 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,319 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,987 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,898 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,396 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,457,017 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,259 |
| One Border Countries | 0 | - | 4.98 | 472,916 |
| Top Producing Countries | 0 | - | 4.63 | 116,488 |
| ISO Country Codes | 0 | - | 4.49 | 92,024 |
| Countries on the Equator | 0 | - | 4.63 | 141,338 |
| Members of the Arab League | 0 | - | 4.77 | 75,758 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,144 |
| Separatist Movements | 0 | - | 4.45 | 46,091 |
| Countries with the Best Passports | 0 | - | 4.72 | 85,747 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,965 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,514 |
| Westernmost Countries | 0 | - | 4.43 | 62,584 |
| Easternmost Countries | 0 | - | 4.74 | 63,107 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,797 |
| Top 10 Most Famous Island Countries | 0 | - | 4.67 | 109,179 |
| Indochina Countries | 0 | - | 4.74 | 66,410 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,705 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,880 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,048 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,196 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,536 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,167 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,925 |
| Countries that are the Source of Refugees | 0 | - | 4.80 | 76,234 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,131 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,797 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,931 |
