| Countries of the World in 1444 | 0 | - | 4.98 | 60,685 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,805 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,119 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,805 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,530 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,965 |
| Independence from Whom | 0 | - | 4.99 | 212,847 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,285 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,785 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,986 |
| Countries by Founding Story | 0 | - | 4.95 | 77,713 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,288 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,192 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,715 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,384 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,781 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,637 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,804,577 |
| Recently Independent Countries | 0 | - | 4.98 | 159,860 |
| Countries by Former Name | 0 | - | 4.99 | 125,705 |
| Historical City to Country | 0 | - | 4.85 | 78,938 |
| Landlocked Countries | 0 | - | 4.99 | 424,791 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 585,794 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,567 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,290 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,810 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,466 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,129 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,476 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,816 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,677 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,001 |
| Pixelated World Map | 0 | - | 5.00 | 143,984 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,645 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,202 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,099 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,687 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,758 |
| Himalayan Countries | 0 | - | 4.93 | 139,866 |
| Andean Countries | 0 | - | 4.94 | 85,228 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,404 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,724 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,971 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,275 |
| Danube Countries | 0 | - | 4.97 | 72,292 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,445 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,736 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,908 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,409 |
| European Landlocked Countries | 0 | - | 4.99 | 147,487 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,136 |
| Countries with the Most Species | 0 | - | 4.99 | 103,506 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,278 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,720 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,833 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,769 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,504 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,928 |
| Countries in the Alps | 0 | - | 4.87 | 118,640 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,398 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,662 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,894 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,922 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,846 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,158 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,286 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,792 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,359 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,091 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,805 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,674 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,471 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,708 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,798 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,578 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,538 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,615 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,525 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,307 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,911 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,452 |
| Largest Countries By Category | 0 | - | 4.97 | 158,704 |
| Countries by Countries | 0 | - | 4.96 | 63,538 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,143 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,370 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,646 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,655 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,301 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,010 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,661 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,406 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,131 |
| Island Countries | 0 | - | 4.99 | 712,182 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,610 |
| Northernmost Countries | 0 | - | 4.99 | 363,548 |
| Countries of South America | 0 | - | 5.00 | 931,309 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,656 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,204 |
| "Land" Countries | 0 | - | 4.98 | 338,147 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,179 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,373 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,436 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,389 |
| Battle to Country | 0 | - | 4.91 | 53,877 |
| Countries by Independence Day | 0 | - | 4.62 | 52,848 |
| Former Countries by Capital | 0 | - | 4.45 | 127,767 |
| Former Countries | 0 | - | 4.77 | 134,143 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,891 |
| Countries with Megacities | 0 | - | 4.99 | 266,589 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,593 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,972 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,896 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,075 |
| Countries by Official Language | 0 | - | 4.95 | 195,827 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,392 |
| Countries in their Native Language | 0 | - | 4.99 | 199,605 |
| Subdivisions by Country | 0 | - | 4.87 | 50,575 |
| Megadiverse Countries | 0 | - | 4.96 | 135,213 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,809 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,494 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,400 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,198 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,479 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,706 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,522 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,784 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,231 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,300 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,327 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,391 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,113 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,535 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,651 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,967 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,108 |
| World Map Quiz | 0 | - | 4.81 | 65,549 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,687 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,758 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,615 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,484 |
| Countries by Road Signs | 0 | - | 4.98 | 54,283 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,052 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,977 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,457 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,316 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,314 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,442 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,642 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,633 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,362 |
| Widest Countries East to West | 0 | - | 4.92 | 130,355 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,149 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,481 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,894 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,390 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,470 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,872 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,152 |
| Countries with Double Letters | 0 | - | 4.96 | 96,862 |
| Countries that End in N | 0 | - | 4.95 | 171,749 |
| Countries with Five Letters | 0 | - | 4.96 | 283,486 |
| Countries with Six Letters | 0 | - | 4.94 | 214,224 |
| Countries with W | 0 | - | 4.96 | 160,794 |
| Countries with Z | 0 | - | 4.98 | 292,211 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,147 |
| Countries That End in U | 0 | - | 4.95 | 121,102 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,960 |
| Countries that End in O | 0 | - | 4.92 | 159,743 |
| Countries that End in R | 0 | - | 4.87 | 119,128 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,886 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,658 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,044 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,748 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,675 |
| Countries That End in Y | 0 | - | 4.91 | 186,042 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,341 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,171 |
| Countries that End in I | 0 | - | 4.94 | 135,263 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,507 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,998 |
| Countries That End in NIA | 0 | - | 4.92 | 109,986 |
| Countries That End in BIA | 0 | - | 4.93 | 149,505 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,420 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,696 |
| Countries That End in RIA | 0 | - | 4.93 | 127,001 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,292 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,370 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,065 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,504 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,070 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,761 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,256 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,517 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,815 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,598 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,621 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,306 |
| Countries that End in L | 0 | - | 4.94 | 157,058 |
