| Countries of the World in 1444 | 0 | - | 4.98 | 60,500 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,639 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,982 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,375 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,948 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,475 |
| Independence from Whom | 0 | - | 4.99 | 212,294 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,870 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,645 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,581 |
| Countries by Founding Story | 0 | - | 4.95 | 77,443 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,924 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 150,858 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,427 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,637,131 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,516 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,648,116 |
| Recently Independent Countries | 0 | - | 4.98 | 159,567 |
| Countries by Former Name | 0 | - | 4.99 | 125,437 |
| Historical City to Country | 0 | - | 4.84 | 78,681 |
| Landlocked Countries | 0 | - | 4.99 | 422,803 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 579,691 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,421 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,968 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,574 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,342 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,982 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,371 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,676 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,485 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,821 |
| Pixelated World Map | 0 | - | 5.00 | 143,730 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,583 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,790 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,559 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,442 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,927 |
| Himalayan Countries | 0 | - | 4.95 | 139,093 |
| Andean Countries | 0 | - | 4.93 | 84,833 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,059 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,168 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,640 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,954 |
| Danube Countries | 0 | - | 4.97 | 72,114 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,160 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,520 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,493 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,989 |
| European Landlocked Countries | 0 | - | 4.99 | 147,255 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,800 |
| Countries with the Most Species | 0 | - | 4.99 | 103,328 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,923 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,643 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,759 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,605 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,337 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,759 |
| Countries in the Alps | 0 | - | 4.87 | 118,334 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,643 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,231 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,734 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,690 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,610 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,014 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,777 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,583 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,232 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,938 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,703 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,581 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,311 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,552 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,617 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,107 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,381 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,600 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,226 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,389 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,374 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,297 |
| Largest Countries By Category | 0 | - | 4.97 | 158,364 |
| Countries by Countries | 0 | - | 4.96 | 63,337 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,801 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,315 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,588 |
| All Countries by Population With a Map | 0 | - | 4.99 | 109,871 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,106 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,764 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,352 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,761 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,838 |
| Island Countries | 0 | - | 4.99 | 711,335 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,932 |
| Northernmost Countries | 0 | - | 4.99 | 362,366 |
| Countries of South America | 0 | - | 5.00 | 928,525 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,395 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,835 |
| "Land" Countries | 0 | - | 4.98 | 337,578 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,970 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,736 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,272 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,137 |
| Battle to Country | 0 | - | 4.91 | 53,616 |
| Countries by Independence Day | 0 | - | 4.62 | 52,795 |
| Former Countries by Capital | 0 | - | 4.45 | 127,635 |
| Former Countries | 0 | - | 4.75 | 133,990 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,142 |
| Countries with Megacities | 0 | - | 4.99 | 265,159 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,957 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,606 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,225 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,678 |
| Countries by Official Language | 0 | - | 4.95 | 195,423 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,611 |
| Countries in their Native Language | 0 | - | 4.99 | 199,203 |
| Subdivisions by Country | 0 | - | 4.87 | 50,469 |
| Megadiverse Countries | 0 | - | 4.96 | 135,082 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,232 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,399 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,277 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,135 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,234 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,375 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,402 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,701 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,174 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,861 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,935 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,253 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,006 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,403 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,536 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,770 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,461 |
| World Map Quiz | 0 | - | 4.81 | 65,211 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 138,858 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,720 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,430 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,231 |
| Countries by Road Signs | 0 | - | 4.98 | 54,091 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,566 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,265 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,374 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,084 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,487 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,986 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,090 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,376 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,487 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,632 |
| Widest Countries East to West | 0 | - | 4.92 | 129,730 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,476 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,481 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,162 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,822 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,673 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,947 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,402 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,816 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,022 |
| Countries with Double Letters | 0 | - | 4.96 | 96,430 |
| Countries that End in N | 0 | - | 4.95 | 171,309 |
| Countries with Five Letters | 0 | - | 4.96 | 282,823 |
| Countries with Six Letters | 0 | - | 4.94 | 213,760 |
| Countries with W | 0 | - | 4.96 | 160,469 |
| Countries with Z | 0 | - | 4.98 | 291,670 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,830 |
| Countries That End in U | 0 | - | 4.95 | 120,919 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,596 |
| Countries that End in O | 0 | - | 4.92 | 159,576 |
| Countries that End in R | 0 | - | 4.87 | 119,012 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,769 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,270 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,783 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,552 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,468 |
| Countries That End in Y | 0 | - | 4.91 | 185,929 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,033 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,953 |
| Countries that End in I | 0 | - | 4.94 | 135,149 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,214 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,867 |
| Countries That End in NIA | 0 | - | 4.92 | 109,845 |
| Countries That End in BIA | 0 | - | 4.93 | 149,285 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,194 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,496 |
| Countries That End in RIA | 0 | - | 4.93 | 126,866 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,084 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,834 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,814 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,246 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,798 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,627 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,091 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,464 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,604 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,475 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,386 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,075 |
| Countries that End in L | 0 | - | 4.94 | 156,905 |
