| Countries of the World in 1444 | 0 | - | 4.98 | 60,676 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,112 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,784 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,499 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,936 |
| Independence from Whom | 0 | - | 4.99 | 212,820 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,268 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,777 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,963 |
| Countries by Founding Story | 0 | - | 4.95 | 77,701 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,844,915 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,175 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,713 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,647,886 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,773 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,627 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,795,030 |
| Recently Independent Countries | 0 | - | 4.98 | 159,844 |
| Countries by Former Name | 0 | - | 4.99 | 125,692 |
| Historical City to Country | 0 | - | 4.85 | 78,928 |
| Landlocked Countries | 0 | - | 4.99 | 424,684 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 585,603 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,562 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,272 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,804 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,459 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,122 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,470 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,806 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,669 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,987 |
| Pixelated World Map | 0 | - | 5.00 | 143,967 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,642 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,183 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,378 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,672 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,709 |
| Himalayan Countries | 0 | - | 4.93 | 139,831 |
| Andean Countries | 0 | - | 4.94 | 85,214 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,393 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,693 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,956 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,259 |
| Danube Countries | 0 | - | 4.97 | 72,288 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,437 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,725 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,892 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,391 |
| European Landlocked Countries | 0 | - | 4.99 | 147,475 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,115 |
| Countries with the Most Species | 0 | - | 4.99 | 103,503 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,262 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,716 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,828 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,762 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,494 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,917 |
| Countries in the Alps | 0 | - | 4.87 | 118,616 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,368 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,636 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,888 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,912 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,836 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,148 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,275 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,779 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,350 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,082 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,801 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,671 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,464 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,702 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,791 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,559 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,532 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,585 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,511 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,271 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,885 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,440 |
| Largest Countries By Category | 0 | - | 4.97 | 158,685 |
| Countries by Countries | 0 | - | 4.96 | 63,528 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,130 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,368 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,645 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,622 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,291 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,998 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,581 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,361 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,074 |
| Island Countries | 0 | - | 4.99 | 712,136 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,489 |
| Northernmost Countries | 0 | - | 4.99 | 363,492 |
| Countries of South America | 0 | - | 5.00 | 931,186 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,500 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,885,914 |
| "Land" Countries | 0 | - | 4.98 | 338,098 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,171 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,106 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,427 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,383 |
| Battle to Country | 0 | - | 4.91 | 53,862 |
| Countries by Independence Day | 0 | - | 4.62 | 52,846 |
| Former Countries by Capital | 0 | - | 4.45 | 127,758 |
| Former Countries | 0 | - | 4.77 | 134,131 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,861 |
| Countries with Megacities | 0 | - | 4.99 | 266,526 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,568 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,951 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,861 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,059 |
| Countries by Official Language | 0 | - | 4.95 | 195,806 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,355 |
| Countries in their Native Language | 0 | - | 4.99 | 199,585 |
| Subdivisions by Country | 0 | - | 4.87 | 50,573 |
| Megadiverse Countries | 0 | - | 4.96 | 135,207 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,788 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,488 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,393 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,195 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,468 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,687 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,519 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,228 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,271 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,322 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,384 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,111 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,523 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,644 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 101,962 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,081 |
| World Map Quiz | 0 | - | 4.81 | 65,490 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 139,646 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,712 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,603 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,469 |
| Countries by Road Signs | 0 | - | 4.98 | 54,268 |
| Countries That Do Not Border | 0 | - | 4.99 | 60,749 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,035 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,971 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,454 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,286 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,306 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,430 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,626 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,629 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,297 |
| Widest Countries East to West | 0 | - | 4.92 | 130,347 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,570 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,130 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,477 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,993 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,885 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,384 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,468 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,870 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,149 |
| Countries with Double Letters | 0 | - | 4.96 | 96,842 |
| Countries that End in N | 0 | - | 4.95 | 171,724 |
| Countries with Five Letters | 0 | - | 4.96 | 283,460 |
| Countries with Six Letters | 0 | - | 4.94 | 214,205 |
| Countries with W | 0 | - | 4.96 | 160,778 |
| Countries with Z | 0 | - | 4.98 | 292,182 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,126 |
| Countries That End in U | 0 | - | 4.95 | 121,088 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,937 |
| Countries that End in O | 0 | - | 4.92 | 159,736 |
| Countries that End in R | 0 | - | 4.87 | 119,123 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,877 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,630 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,024 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,736 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,657 |
| Countries That End in Y | 0 | - | 4.91 | 186,037 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,325 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,162 |
| Countries that End in I | 0 | - | 4.94 | 135,260 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,490 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,989 |
| Countries That End in NIA | 0 | - | 4.92 | 109,977 |
| Countries That End in BIA | 0 | - | 4.93 | 149,494 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,410 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,686 |
| Countries That End in RIA | 0 | - | 4.93 | 126,999 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,285 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,342 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,057 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,493 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,058 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,753 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,247 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,801 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,593 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,607 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,289 |
| Countries that End in L | 0 | - | 4.94 | 157,050 |
