| Landlocked Countries | 0 | - | 4.99 | 427,663 |
| Countries of the World Quiz | 0 | - | 5.00 | 48,003,422 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,115 |
| Himalayan Countries | 0 | - | 4.93 | 141,005 |
| Andean Countries | 0 | - | 4.94 | 85,891 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,004 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,618 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,546 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,752 |
| Danube Countries | 0 | - | 4.97 | 72,606 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,870 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,014 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,522 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,000 |
| European Landlocked Countries | 0 | - | 4.99 | 147,815 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,600 |
| Countries with the Most Species | 0 | - | 4.99 | 103,672 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,706 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,829 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,971 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,954 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,704 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,171 |
| Countries in the Alps | 0 | - | 4.87 | 119,045 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,114 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,249 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,090 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,216 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,186 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,423 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,640 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,031 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,536 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,348 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,977 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,850 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,703 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,959 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,060 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,246 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,767 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,760 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,897 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,539 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,629 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,639 |
| Largest Countries By Category | 0 | - | 4.97 | 159,170 |
| Countries by Countries | 0 | - | 4.97 | 63,851 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,518 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,457 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,717 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,283 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,815,332 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,000 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,163 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,613 |
| Island Countries | 0 | - | 4.99 | 713,177 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,679 |
| Northernmost Countries | 0 | - | 4.99 | 364,816 |
| Countries of South America | 0 | - | 5.00 | 934,859 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,214 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,894,512 |
| "Land" Countries | 0 | - | 4.98 | 339,161 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,639 |
| Countries with Megacities | 0 | - | 4.99 | 268,148 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,289 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,405 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,617 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,519 |
| Countries by Official Language | 0 | - | 4.95 | 196,320 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,079 |
| Countries in their Native Language | 0 | - | 4.99 | 200,029 |
| Independence from Whom | 0 | - | 4.99 | 213,525 |
| Subdivisions by Country | 0 | - | 4.87 | 50,682 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,749 |
| Megadiverse Countries | 0 | - | 4.96 | 149,733 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,212 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,594 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,842 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,272 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,539 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,954 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,371 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,653 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,205 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,299 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,882 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,517 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,528 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,245 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,668 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,007 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,361 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,874 |
| World Map Quiz | 0 | - | 4.81 | 65,979 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,153 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,859 |
| Countries by Founding Story | 0 | - | 4.95 | 77,944 |
| Countries by Road Signs | 0 | - | 4.98 | 54,495 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,618 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,286 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,759 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,051 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,612 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,724 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,901 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,783 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,010 |
| Widest Countries East to West | 0 | - | 4.92 | 130,902 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,637 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,463 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,585 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,195 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,439 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,646 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,547 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,766 |
| Countries that End in N | 0 | - | 4.95 | 172,765 |
| Countries with Five Letters | 0 | - | 4.96 | 284,822 |
| Countries with Six Letters | 0 | - | 4.94 | 215,101 |
| Countries with W | 0 | - | 4.96 | 161,414 |
| Countries with Z | 0 | - | 4.98 | 293,158 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,782 |
| Countries That End in U | 0 | - | 4.95 | 121,451 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,538 |
| Countries that End in O | 0 | - | 4.92 | 160,421 |
| Countries that End in R | 0 | - | 4.87 | 119,314 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,085 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,252 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,563 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,296 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,967 |
| Countries That End in Y | 0 | - | 4.91 | 186,199 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,502 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,476 |
| Countries that End in I | 0 | - | 4.94 | 135,460 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,441 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,178 |
| Countries That End in NIA | 0 | - | 4.92 | 110,189 |
| Countries That End in BIA | 0 | - | 4.93 | 149,787 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,001 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,944 |
| Countries That End in RIA | 0 | - | 4.93 | 127,193 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,589 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,061 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,457 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,918 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,481 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,952 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,511 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,621 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,108 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,766 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,962 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,678 |
| Countries that End in L | 0 | - | 4.94 | 157,293 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,801 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,391 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,917 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,183 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,567 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,751 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,377 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,564 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,470 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,257 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,358 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,309 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,983 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,894 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,390 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,756 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,185 |
| One Border Countries | 0 | - | 4.98 | 472,836 |
| Top Producing Countries | 0 | - | 4.63 | 116,478 |
| ISO Country Codes | 0 | - | 4.49 | 92,019 |
| Countries on the Equator | 0 | - | 4.63 | 141,330 |
| Members of the Arab League | 0 | - | 4.77 | 75,756 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,138 |
| Separatist Movements | 0 | - | 4.45 | 46,084 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,733 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,959 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,503 |
| Westernmost Countries | 0 | - | 4.43 | 62,581 |
| Easternmost Countries | 0 | - | 4.74 | 63,106 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,794 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 109,162 |
| Indochina Countries | 0 | - | 4.74 | 66,406 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,703 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,873 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,046 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,191 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,535 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,161 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,917 |
| Countries that are the Source of Refugees | 0 | - | 4.80 | 76,189 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,128 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,786 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,926 |
