| Landlocked Countries | 0 | - | 4.99 | 426,615 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,923,811 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,588 |
| Himalayan Countries | 0 | - | 4.93 | 140,522 |
| Andean Countries | 0 | - | 4.94 | 85,639 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,777 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,246 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,331 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,565 |
| Danube Countries | 0 | - | 4.97 | 72,475 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,692 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,905 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,285 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,744 |
| European Landlocked Countries | 0 | - | 4.99 | 147,678 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,412 |
| Countries with the Most Species | 0 | - | 4.99 | 103,607 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,522 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,791 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,917 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,883 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,621 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,080 |
| Countries in the Alps | 0 | - | 4.87 | 118,866 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,811 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,010 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,016 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,102 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,042 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,329 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,478 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,926 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,473 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,244 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,920 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,788 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,621 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,856 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,954 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,013 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,663 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,689 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,761 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,976 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,318 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,560 |
| Largest Countries By Category | 0 | - | 4.97 | 158,956 |
| Countries by Countries | 0 | - | 4.97 | 63,718 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,340 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,427 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,689 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,159 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,808,158 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,022 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,868 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,028 |
| Island Countries | 0 | - | 4.99 | 712,776 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,435 |
| Northernmost Countries | 0 | - | 4.99 | 364,309 |
| Countries of South America | 0 | - | 5.00 | 933,477 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,463 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,112 |
| "Land" Countries | 0 | - | 4.98 | 338,594 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,336 |
| Countries with Megacities | 0 | - | 4.99 | 267,493 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,994 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,235 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,330 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,338 |
| Countries by Official Language | 0 | - | 4.95 | 196,126 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,790 |
| Countries in their Native Language | 0 | - | 4.99 | 199,847 |
| Independence from Whom | 0 | - | 4.99 | 213,241 |
| Subdivisions by Country | 0 | - | 4.87 | 50,642 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,566 |
| Megadiverse Countries | 0 | - | 4.96 | 145,687 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,038 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,558 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,753 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,239 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,358 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,891 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,191 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,596 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,129 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,275 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,648 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,439 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,467 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,180 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,609 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,918 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,393 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,543 |
| World Map Quiz | 0 | - | 4.81 | 65,828 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,572 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,760 |
| Countries by Founding Story | 0 | - | 4.95 | 77,859 |
| Countries by Road Signs | 0 | - | 4.98 | 54,395 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,389 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,161 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,626 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,749 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,488 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,611 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,793 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,733 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,856 |
| Widest Countries East to West | 0 | - | 4.92 | 130,779 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,617 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,316 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,538 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,104 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,047 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,545 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,518 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,909 |
| Countries with Double Letters | 0 | - | 4.96 | 97,264 |
| Countries that End in N | 0 | - | 4.95 | 172,354 |
| Countries with Five Letters | 0 | - | 4.96 | 284,237 |
| Countries with Six Letters | 0 | - | 4.94 | 214,667 |
| Countries with W | 0 | - | 4.96 | 161,080 |
| Countries with Z | 0 | - | 4.98 | 292,650 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,425 |
| Countries That End in U | 0 | - | 4.95 | 121,266 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,223 |
| Countries that End in O | 0 | - | 4.92 | 160,278 |
| Countries that End in R | 0 | - | 4.87 | 119,225 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,985 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,973 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 174,250 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,919 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,964 |
| Countries That End in Y | 0 | - | 4.91 | 186,121 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,641 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,338 |
| Countries that End in I | 0 | - | 4.94 | 135,368 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,771 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,095 |
| Countries That End in NIA | 0 | - | 4.92 | 110,106 |
| Countries That End in BIA | 0 | - | 4.93 | 149,652 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,830 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,820 |
| Countries That End in RIA | 0 | - | 4.93 | 127,099 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,455 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,767 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,268 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,731 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,283 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,853 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,375 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,559 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,976 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,680 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,804 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,498 |
| Countries that End in L | 0 | - | 4.94 | 157,188 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,252 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,362 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,612 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,062 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,499 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,539 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,224 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,474 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,340 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,075 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,268 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,271 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,960 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,853 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,300 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,060 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,729 |
| One Border Countries | 0 | - | 4.98 | 472,253 |
| Top Producing Countries | 0 | - | 4.63 | 116,436 |
| ISO Country Codes | 0 | - | 4.49 | 91,756 |
| Countries on the Equator | 0 | - | 4.63 | 141,272 |
| Members of the Arab League | 0 | - | 4.78 | 75,738 |
| Countries with the Oldest Median Age | 0 | - | 4.80 | 70,093 |
| Separatist Movements | 0 | - | 4.45 | 46,053 |
| Countries with the Best Passports | 0 | - | 4.73 | 85,638 |
| Prime Meridian Countries | 0 | - | 4.69 | 59,935 |
| Next Country Alphabetically | 0 | - | 4.70 | 86,458 |
| Westernmost Countries | 0 | - | 4.43 | 62,557 |
| Easternmost Countries | 0 | - | 4.74 | 63,075 |
| Countries With the Most ISIS Fighters | 0 | - | 4.54 | 39,768 |
| Top 10 Most Famous Island Countries | 0 | - | 4.69 | 109,055 |
| Indochina Countries | 0 | - | 4.74 | 66,373 |
| Atlantic Ocean Island Countries | 0 | - | 4.56 | 64,691 |
| Countries With the Most Conflict Deaths | 0 | - | 4.63 | 96,833 |
| Highest Foreign Aid Recipients | 0 | - | 4.67 | 44,034 |
| Pacific Ocean Island Countries | 0 | - | 4.49 | 57,173 |
| Countries with the Most Traffic-Related Deaths | 0 | - | 4.74 | 48,512 |
| Countries with More Sheep than People | 0 | - | 4.48 | 32,094 |
| Countries with the Lowest Obesity Rate | 0 | - | 4.47 | 53,881 |
| Countries that are the Source of Refugees | 0 | - | 4.78 | 75,886 |
| Countries 206 to 242 | 0 | - | 4.74 | 34,092 |
| Most Populous Countries By Category | 0 | - | 4.55 | 85,718 |
| Countries with the Most Turkic People | 0 | - | 4.77 | 45,891 |
