| Countries of the World in 1444 | 0 | - | 4.98 | 60,870 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,997 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,309 |
| Countries of the World in 1900 | 0 | - | 4.89 | 86,209 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 197,138 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,536 |
| Independence from Whom | 0 | - | 4.99 | 213,467 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,710 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,937 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,327 |
| Countries by Founding Story | 0 | - | 4.95 | 77,924 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,854,322 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,583 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.97 | 72,038 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,661,038 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,911 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,760 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,986,876 |
| Recently Independent Countries | 0 | - | 4.98 | 160,538 |
| Countries by Former Name | 0 | - | 4.99 | 126,001 |
| Historical City to Country | 0 | - | 4.85 | 79,107 |
| Landlocked Countries | 0 | - | 4.99 | 427,463 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 592,463 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,803 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,658 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 136,034 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,628 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,295 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,580 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,937 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,886 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,198 |
| Pixelated World Map | 0 | - | 5.00 | 144,339 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,756 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,777 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,813,943 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,939 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,012 |
| Himalayan Countries | 0 | - | 4.93 | 140,911 |
| Andean Countries | 0 | - | 4.94 | 85,848 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,960 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,555 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,500 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,717 |
| Danube Countries | 0 | - | 4.97 | 72,577 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,838 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,997 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,486 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,958 |
| European Landlocked Countries | 0 | - | 4.99 | 147,798 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,568 |
| Countries with the Most Species | 0 | - | 4.99 | 103,657 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,674 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,822 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,962 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,940 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,691 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,148 |
| Countries in the Alps | 0 | - | 4.87 | 119,008 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,057 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,198 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,076 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,196 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,154 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,408 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,624 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,013 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,522 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,329 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,966 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,841 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,689 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,942 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,044 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,189 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,753 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,619 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,865 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,429 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,559 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,630 |
| Largest Countries By Category | 0 | - | 4.97 | 159,126 |
| Countries by Countries | 0 | - | 4.97 | 63,825 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,482 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,452 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,714 |
| All Countries by Population With a Map | 0 | - | 4.98 | 111,533 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,576 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,253 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,816 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,102 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,491 |
| Island Countries | 0 | - | 4.99 | 713,084 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,428 |
| Northernmost Countries | 0 | - | 4.99 | 364,701 |
| Countries of South America | 0 | - | 5.00 | 934,609 |
| Countries of Oceania | 0 | - | 5.00 | 1,065,879 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,893,776 |
| "Land" Countries | 0 | - | 4.98 | 339,087 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,389 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,397,764 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,631 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,629 |
| Battle to Country | 0 | - | 4.91 | 54,136 |
| Countries by Independence Day | 0 | - | 4.62 | 52,882 |
| Former Countries by Capital | 0 | - | 4.45 | 127,906 |
| Former Countries | 0 | - | 4.77 | 134,334 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,566 |
| Countries with Megacities | 0 | - | 4.99 | 267,999 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,215 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,372 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,547 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,475 |
| Countries by Official Language | 0 | - | 4.95 | 196,275 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,010 |
| Countries in their Native Language | 0 | - | 4.99 | 199,991 |
| Subdivisions by Country | 0 | - | 4.87 | 50,676 |
| Megadiverse Countries | 0 | - | 4.96 | 149,511 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,174 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,589 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,828 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,265 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,511 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 117,142 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,640 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,188 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,291 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,835 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,506 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,520 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,230 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,652 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,987 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,167 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,808 |
| World Map Quiz | 0 | - | 4.81 | 65,955 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 140,523 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,038 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,836 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,763 |
| Countries by Road Signs | 0 | - | 4.98 | 54,470 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,567 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,259 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,729 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,996 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,581 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,695 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,873 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,776 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,977 |
| Widest Countries East to West | 0 | - | 4.92 | 130,882 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,634 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,432 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,574 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,175 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,153 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,630 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,543 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,928 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,258 |
| Countries with Double Letters | 0 | - | 4.96 | 97,711 |
| Countries that End in N | 0 | - | 4.95 | 172,704 |
| Countries with Five Letters | 0 | - | 4.96 | 284,741 |
| Countries with Six Letters | 0 | - | 4.94 | 215,036 |
| Countries with W | 0 | - | 4.96 | 161,367 |
| Countries with Z | 0 | - | 4.98 | 293,101 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,739 |
| Countries That End in U | 0 | - | 4.95 | 121,426 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,487 |
| Countries that End in O | 0 | - | 4.92 | 160,400 |
| Countries that End in R | 0 | - | 4.87 | 119,301 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,075 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,205 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,088 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,258 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,922 |
| Countries That End in Y | 0 | - | 4.91 | 186,191 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,437 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,455 |
| Countries that End in I | 0 | - | 4.94 | 135,443 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,380 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,163 |
| Countries That End in NIA | 0 | - | 4.92 | 110,173 |
| Countries That End in BIA | 0 | - | 4.93 | 149,768 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,970 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,925 |
| Countries That End in RIA | 0 | - | 4.93 | 127,176 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,566 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,013 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,431 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,895 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,451 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,940 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,482 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,616 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,083 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,756 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,938 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,654 |
| Countries that End in L | 0 | - | 4.94 | 157,274 |
