| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,694 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 152,090 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,532 |
| Countries of the World in 1444 | 0 | - | 4.98 | 60,731 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,853 |
| Independence from Whom | 0 | - | 4.99 | 212,999 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,394 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,830 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,073 |
| Countries by Founding Story | 0 | - | 4.95 | 77,780 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,160 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,847,601 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,651,255 |
| Recently Independent Countries | 0 | - | 4.98 | 160,310 |
| Countries by Former Name | 0 | - | 4.99 | 125,788 |
| Historical City to Country | 0 | - | 4.85 | 78,999 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,855,640 |
| Landlocked Countries | 0 | - | 4.99 | 425,456 |
| Save Humanity by Guessing Countries | 0 | - | 4.98 | 587,479 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.78 | 43,653 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,802,526 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,363 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,858 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,502 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,180 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,507 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,846 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,735 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,091 |
| Himalayan Countries | 0 | - | 4.93 | 140,106 |
| Andean Countries | 0 | - | 4.94 | 85,366 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,505 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,893 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,090 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,366 |
| Danube Countries | 0 | - | 4.97 | 72,342 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,533 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,790 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,030 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,539 |
| European Landlocked Countries | 0 | - | 4.99 | 147,570 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,240 |
| Countries with the Most Species | 0 | - | 4.99 | 103,539 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,355 |
| Countries Settled by Vikings | 0 | - | 4.92 | 122,060 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,762 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,866 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,812 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,548 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,977 |
| Countries in the Alps | 0 | - | 4.87 | 118,727 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,545 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,787 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,939 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,990 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,912 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,217 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,357 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,821 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,392 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,146 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,843 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,721 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,530 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,754 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,858 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,751 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,582 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,749 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,628 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,547 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,062 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,483 |
| Largest Countries By Category | 0 | - | 4.97 | 158,807 |
| Countries by Countries | 0 | - | 4.96 | 63,609 |
| Pixelated World Map | 0 | - | 5.00 | 144,069 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,215 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,680 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,388 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,321 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,659 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,884 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,395 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,070 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 82,745 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,158 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,584 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,521 |
| Island Countries | 0 | - | 4.99 | 712,442 |
| Modern-Day Countries of the Khmer Empire on a Map | 0 | - | 4.77 | 45,817 |
| Modern-Day Countries of the Mayan Civilization | 0 | - | 4.78 | 33,673 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,373 |
| Northernmost Countries | 0 | - | 4.99 | 363,842 |
| Countries of South America | 0 | - | 5.00 | 932,222 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,781 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,888,149 |
| "Land" Countries | 0 | - | 4.98 | 338,318 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,219 |
| Countries by Independence Day | 0 | - | 4.62 | 52,856 |
| Former Countries by Capital | 0 | - | 4.45 | 127,795 |
| Former Countries | 0 | - | 4.77 | 134,202 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,886 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 105,475 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,457 |
| Battle to Country | 0 | - | 4.91 | 53,927 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 151,322 |
| Every Country of Europe Since 1815 With a Map | 0 | - | 4.98 | 71,800 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,054 |
| Countries with Megacities | 0 | - | 4.99 | 266,939 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,773 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,076 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,088 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,194 |
| Countries by Official Language | 0 | - | 4.95 | 195,947 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,556 |
| Countries in their Native Language | 0 | - | 4.99 | 199,687 |
| Subdivisions by Country | 0 | - | 4.87 | 50,603 |
| Megadiverse Countries | 0 | - | 4.96 | 135,261 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,904 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,526 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,570 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,220 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,748 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,555 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,952 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,249 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,473 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,359 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,428 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,136 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,564 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,782 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,275 |
| World Map Quiz | 0 | - | 4.81 | 65,667 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,096 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,690 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,547 |
| Countries by Road Signs | 0 | - | 4.98 | 54,330 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,197 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,038 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,535 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,482 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,405 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,504 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,700 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,676 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,629 |
| Widest Countries East to West | 0 | - | 4.92 | 130,425 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,589 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,223 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,509 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,043 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,948 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,447 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,489 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,887 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,181 |
| Countries with Double Letters | 0 | - | 4.96 | 97,015 |
| Countries that End in N | 0 | - | 4.95 | 171,878 |
| Countries with Five Letters | 0 | - | 4.96 | 283,676 |
| Countries with Six Letters | 0 | - | 4.94 | 214,412 |
| Countries with W | 0 | - | 4.96 | 160,900 |
| Countries with Z | 0 | - | 4.98 | 292,378 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,254 |
| Countries That End in U | 0 | - | 4.95 | 121,167 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,063 |
| Countries that End in O | 0 | - | 4.92 | 160,193 |
| Countries that End in R | 0 | - | 4.87 | 119,167 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,918 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,788 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,120 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,802 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,729 |
| Countries That End in Y | 0 | - | 4.91 | 186,079 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,423 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,253 |
| Countries that End in I | 0 | - | 4.94 | 135,301 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,583 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,038 |
| Countries That End in NIA | 0 | - | 4.92 | 110,034 |
| Countries That End in BIA | 0 | - | 4.93 | 149,560 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,505 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,755 |
| Countries That End in RIA | 0 | - | 4.93 | 127,039 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,371 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,541 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,146 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,590 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,146 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,792 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,312 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,532 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,884 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,642 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,691 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,390 |
| Countries that End in L | 0 | - | 4.94 | 157,106 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,899 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,339 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,460 |
