| Landlocked Countries | 0 | - | 4.99 | 426,829 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,936,689 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,701 |
| Himalayan Countries | 0 | - | 4.93 | 140,626 |
| Andean Countries | 0 | - | 4.94 | 85,701 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,827 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,342 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,379 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,615 |
| Danube Countries | 0 | - | 4.97 | 72,506 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,726 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,926 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,341 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,798 |
| European Landlocked Countries | 0 | - | 4.99 | 147,694 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,452 |
| Countries with the Most Species | 0 | - | 4.99 | 103,618 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,561 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,799 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,931 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,898 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,644 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,096 |
| Countries in the Alps | 0 | - | 4.87 | 118,902 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,863 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,040 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,030 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,120 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,074 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,346 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,512 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,957 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,486 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,273 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,931 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,806 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,628 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,883 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,978 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,059 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,686 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,991 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,774 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,083 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,367 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,582 |
| Largest Countries By Category | 0 | - | 4.97 | 159,004 |
| Countries by Countries | 0 | - | 4.97 | 63,748 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,372 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,435 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,696 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,188 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,809,300 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,186 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,927 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,113 |
| Island Countries | 0 | - | 4.99 | 712,841 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,625 |
| Northernmost Countries | 0 | - | 4.99 | 364,393 |
| Countries of South America | 0 | - | 5.00 | 933,665 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,699 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,593 |
| "Land" Countries | 0 | - | 4.98 | 338,752 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,388 |
| Countries with Megacities | 0 | - | 4.99 | 267,585 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,036 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,268 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,373 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,373 |
| Countries by Official Language | 0 | - | 4.95 | 196,147 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,825 |
| Countries in their Native Language | 0 | - | 4.99 | 199,877 |
| Independence from Whom | 0 | - | 4.99 | 213,293 |
| Subdivisions by Country | 0 | - | 4.87 | 50,646 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,593 |
| Megadiverse Countries | 0 | - | 4.96 | 147,391 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,067 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,563 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,766 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,243 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,389 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,903 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,222 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,601 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,135 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,684 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,451 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,480 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,195 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,614 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,933 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,827 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,596 |
| World Map Quiz | 0 | - | 4.81 | 65,865 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,673 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,772 |
| Countries by Founding Story | 0 | - | 4.95 | 77,881 |
| Countries by Road Signs | 0 | - | 4.98 | 54,408 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,423 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,182 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,645 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,796 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,512 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,621 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,809 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,741 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,883 |
| Widest Countries East to West | 0 | - | 4.92 | 130,795 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,623 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,338 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,545 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,120 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,065 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,570 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,524 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,914 |
| Countries with Double Letters | 0 | - | 4.96 | 97,430 |
| Countries that End in N | 0 | - | 4.95 | 172,475 |
| Countries with Five Letters | 0 | - | 4.96 | 284,407 |
| Countries with Six Letters | 0 | - | 4.94 | 214,788 |
| Countries with W | 0 | - | 4.96 | 161,182 |
| Countries with Z | 0 | - | 4.98 | 292,802 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,542 |
| Countries That End in U | 0 | - | 4.95 | 121,319 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,307 |
| Countries that End in O | 0 | - | 4.92 | 160,320 |
| Countries that End in R | 0 | - | 4.87 | 119,248 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,018 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,046 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 181,350 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,047 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,402 |
| Countries That End in Y | 0 | - | 4.91 | 186,144 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,970 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,364 |
| Countries that End in I | 0 | - | 4.94 | 135,383 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,037 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,114 |
| Countries That End in NIA | 0 | - | 4.92 | 110,118 |
| Countries That End in BIA | 0 | - | 4.93 | 149,687 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,864 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,845 |
| Countries That End in RIA | 0 | - | 4.93 | 127,111 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,489 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,829 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,310 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,769 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,326 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,879 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,397 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,575 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,997 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,694 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,839 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,536 |
| Countries that End in L | 0 | - | 4.94 | 157,206 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,352 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,368 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,777 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,113 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,518 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,581 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,249 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,488 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,370 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,116 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,285 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,279 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,963 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,862 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,321 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,329 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,800 |
| One Border Countries | 0 | - | 4.98 | 472,347 |
| Top Producing Countries | 0 | - | 4.63 | 116,447 |
| ISO Country Codes | 0 | - | 4.49 | 91,898 |
| Countries on the Equator | 0 | - | 4.63 | 141,290 |
| Members of the Arab League | 0 | - | 4.78 | 75,744 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,100 |
| Separatist Movements | 0 | - | 4.45 | 46,059 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,656 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,940 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,464 |
| Westernmost Countries | 0 | - | 4.43 | 62,561 |
| Easternmost Countries | 0 | - | 4.74 | 63,080 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,773 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 109,071 |
| Indochina Countries | 0 | - | 4.74 | 66,375 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,692 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,838 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,035 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,176 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,516 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,110 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,884 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,943 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,096 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,725 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,898 |
