| Countries of the World in 1444 | 0 | - | 4.98 | 60,733 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,855 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,163 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,922 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,703 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,098 |
| Independence from Whom | 0 | - | 4.99 | 213,005 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,401 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,831 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,082 |
| Countries by Founding Story | 0 | - | 4.95 | 77,781 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,847,760 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,328 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,807 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,651,486 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,820 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,674 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,859,030 |
| Recently Independent Countries | 0 | - | 4.98 | 160,313 |
| Countries by Former Name | 0 | - | 4.99 | 125,793 |
| Historical City to Country | 0 | - | 4.85 | 79,001 |
| Landlocked Countries | 0 | - | 4.99 | 425,523 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 587,592 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,657 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,367 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,861 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,507 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,183 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,507 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,847 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,740 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,062 |
| Pixelated World Map | 0 | - | 5.00 | 144,074 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,682 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,325 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,802,850 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,752 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,109 |
| Himalayan Countries | 0 | - | 4.93 | 140,128 |
| Andean Countries | 0 | - | 4.94 | 85,373 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,518 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,906 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,095 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,372 |
| Danube Countries | 0 | - | 4.97 | 72,347 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,547 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,800 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,041 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,548 |
| European Landlocked Countries | 0 | - | 4.99 | 147,576 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,248 |
| Countries with the Most Species | 0 | - | 4.99 | 103,541 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,364 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,764 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,868 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,816 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,554 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,981 |
| Countries in the Alps | 0 | - | 4.87 | 118,734 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,551 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,802 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,941 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,994 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,916 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,227 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,363 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,825 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,396 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,150 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,847 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,724 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,534 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,761 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,861 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,763 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,585 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,761 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,634 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,567 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,072 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,486 |
| Largest Countries By Category | 0 | - | 4.97 | 158,812 |
| Countries by Countries | 0 | - | 4.96 | 63,615 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,217 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,389 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,659 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,894 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,405 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,079 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,200 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,603 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,557 |
| Island Countries | 0 | - | 4.99 | 712,461 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,428 |
| Northernmost Countries | 0 | - | 4.99 | 363,862 |
| Countries of South America | 0 | - | 5.00 | 932,290 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,886 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,366 |
| "Land" Countries | 0 | - | 4.98 | 338,325 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,220 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,393,013 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,482 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,461 |
| Battle to Country | 0 | - | 4.91 | 53,934 |
| Countries by Independence Day | 0 | - | 4.62 | 52,857 |
| Former Countries by Capital | 0 | - | 4.45 | 127,798 |
| Former Countries | 0 | - | 4.77 | 134,203 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,074 |
| Countries with Megacities | 0 | - | 4.99 | 266,965 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,787 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,092 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,098 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,204 |
| Countries by Official Language | 0 | - | 4.95 | 195,952 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,566 |
| Countries in their Native Language | 0 | - | 4.99 | 199,694 |
| Subdivisions by Country | 0 | - | 4.87 | 50,604 |
| Megadiverse Countries | 0 | - | 4.96 | 135,264 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,910 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,530 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,593 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,221 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,776 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,796 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,557 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,971 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,249 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,481 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,361 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,434 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,136 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,566 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,800 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 102,017 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,291 |
| World Map Quiz | 0 | - | 4.81 | 65,673 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,904 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,121 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,696 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,552 |
| Countries by Road Signs | 0 | - | 4.98 | 54,331 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,205 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,045 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,537 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,494 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,409 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,509 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,704 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,677 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,645 |
| Widest Countries East to West | 0 | - | 4.92 | 130,430 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,590 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,231 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,510 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,050 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,952 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,452 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,490 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,887 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,182 |
| Countries with Double Letters | 0 | - | 4.96 | 97,020 |
| Countries that End in N | 0 | - | 4.95 | 171,884 |
| Countries with Five Letters | 0 | - | 4.96 | 283,692 |
| Countries with Six Letters | 0 | - | 4.94 | 214,423 |
| Countries with W | 0 | - | 4.96 | 160,904 |
| Countries with Z | 0 | - | 4.98 | 292,386 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,257 |
| Countries That End in U | 0 | - | 4.95 | 121,172 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,068 |
| Countries that End in O | 0 | - | 4.92 | 160,194 |
| Countries that End in R | 0 | - | 4.87 | 119,169 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,919 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,798 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,122 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,806 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,734 |
| Countries That End in Y | 0 | - | 4.91 | 186,079 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,429 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,255 |
| Countries that End in I | 0 | - | 4.94 | 135,303 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,592 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,042 |
| Countries That End in NIA | 0 | - | 4.92 | 110,040 |
| Countries That End in BIA | 0 | - | 4.93 | 149,564 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,510 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,758 |
| Countries That End in RIA | 0 | - | 4.93 | 127,042 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,374 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,546 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,148 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,596 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,149 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,793 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,317 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,532 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,890 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,642 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,699 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,395 |
| Countries that End in L | 0 | - | 4.94 | 157,108 |
