| Warsaw Pact Countries | 0 | - | 4.83 | 84,610 |
| Independence from Whom | 0 | - | 4.99 | 212,469 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,008 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,678 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,677 |
| Countries by Founding Story | 0 | - | 4.95 | 77,501 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,505 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,148 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,654 |
| Countries by Former Name | 0 | - | 4.99 | 125,521 |
| Historical City to Country | 0 | - | 4.85 | 78,738 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,703,615 |
| Landlocked Countries | 0 | - | 4.99 | 423,481 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,789,472 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,084 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,660 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,372 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,045 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,401 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,713 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,552 |
| Former Capitals | 0 | - | 4.88 | 71,585 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,202 |
| Himalayan Countries | 0 | - | 4.94 | 139,394 |
| Andean Countries | 0 | - | 4.94 | 84,977 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,182 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,353 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,749 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,067 |
| Danube Countries | 0 | - | 4.97 | 72,177 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,256 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,578 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,634 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,138 |
| European Landlocked Countries | 0 | - | 4.99 | 147,329 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,913 |
| Countries with the Most Species | 0 | - | 4.99 | 103,389 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,056 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,885 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,666 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,777 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,656 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,413 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,814 |
| Countries in the Alps | 0 | - | 4.87 | 118,440 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,945 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,379 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,788 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,772 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,690 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,076 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,871 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,640 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,279 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,996 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,746 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,614 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,360 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,609 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,681 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,283 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,445 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,047 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,305 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,748 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,558 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,351 |
| Largest Countries By Category | 0 | - | 4.97 | 158,495 |
| Countries by Countries | 0 | - | 4.96 | 63,411 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,942 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,338 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,961 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,606 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,235 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,703 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,168 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,177 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,849 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,904 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,996 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,316 |
| Island Countries | 0 | - | 4.99 | 711,612 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,899 |
| Northernmost Countries | 0 | - | 4.99 | 362,795 |
| Countries of South America | 0 | - | 5.00 | 929,513 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,612 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,882,168 |
| "Land" Countries | 0 | - | 4.98 | 337,773 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,035 |
| Countries by Independence Day | 0 | - | 4.62 | 52,820 |
| Former Countries by Capital | 0 | - | 4.45 | 127,688 |
| Former Countries | 0 | - | 4.77 | 134,042 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,602 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,247 |
| Battle to Country | 0 | - | 4.91 | 53,699 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,035 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,358 |
| Countries with Megacities | 0 | - | 4.99 | 265,640 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,145 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,708 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,412 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,784 |
| Countries by Official Language | 0 | - | 4.95 | 195,563 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,823 |
| Countries in their Native Language | 0 | - | 4.99 | 199,339 |
| Subdivisions by Country | 0 | - | 4.87 | 50,513 |
| Megadiverse Countries | 0 | - | 4.96 | 135,131 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,364 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,441 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,324 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,154 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,327 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,451 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,732 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,198 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,012 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,989 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,300 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,041 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,462 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,584 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,705 |
| World Map Quiz | 0 | - | 4.81 | 65,312 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,066 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,505 |
| Countries by Road Signs | 0 | - | 4.98 | 54,169 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,486 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,533 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,228 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,802 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,118 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,243 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,469 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,538 |
| Tallest Countries North to South | 0 | - | 4.83 | 125,122 |
| Widest Countries East to West | 0 | - | 4.92 | 129,971 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,498 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,966 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,417 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,882 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,766 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,031 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,434 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,834 |
| Countries with Double Letters | 0 | - | 4.96 | 96,588 |
| Countries that End in N | 0 | - | 4.95 | 171,483 |
| Countries with Five Letters | 0 | - | 4.96 | 283,073 |
| Countries with Six Letters | 0 | - | 4.94 | 213,938 |
| Countries with W | 0 | - | 4.96 | 160,575 |
| Countries with Z | 0 | - | 4.98 | 291,853 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,950 |
| Countries That End in U | 0 | - | 4.95 | 120,987 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,733 |
| Countries that End in O | 0 | - | 4.92 | 159,643 |
| Countries that End in R | 0 | - | 4.87 | 119,054 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,811 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,409 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,881 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,622 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,535 |
| Countries That End in Y | 0 | - | 4.91 | 185,970 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,136 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,037 |
| Countries that End in I | 0 | - | 4.94 | 135,195 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,318 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,912 |
| Countries That End in NIA | 0 | - | 4.92 | 109,881 |
| Countries That End in BIA | 0 | - | 4.93 | 149,360 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,287 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,573 |
| Countries That End in RIA | 0 | - | 4.93 | 126,916 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,170 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,994 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,911 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,341 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,892 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,663 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,161 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,479 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,672 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,529 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,468 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,162 |
| Countries that End in L | 0 | - | 4.94 | 156,966 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,509 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,301 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,131 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,055 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,107 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,037 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,873 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,275 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,017 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,674 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,024 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,161 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,748 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,086 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,450,689 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,565 |
