| Warsaw Pact Countries | 0 | - | 4.83 | 84,644 |
| Independence from Whom | 0 | - | 4.99 | 212,843 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,276 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,782 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,977 |
| Countries by Founding Story | 0 | - | 4.95 | 77,708 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,800 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,519 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,958 |
| Countries by Former Name | 0 | - | 4.99 | 125,704 |
| Historical City to Country | 0 | - | 4.85 | 78,934 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,802,123 |
| Landlocked Countries | 0 | - | 4.99 | 424,769 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,797,951 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,286 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,809 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,465 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,125 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,476 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,813 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,677 |
| Former Capitals | 0 | - | 4.88 | 71,639 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,746 |
| Himalayan Countries | 0 | - | 4.93 | 139,859 |
| Andean Countries | 0 | - | 4.94 | 85,225 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,399 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,712 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,963 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,270 |
| 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 | 86,732 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,906 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,405 |
| European Landlocked Countries | 0 | - | 4.99 | 147,485 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,129 |
| Countries with the Most Species | 0 | - | 4.99 | 103,504 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,276 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,996 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,719 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,829 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,767 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,500 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,925 |
| Countries in the Alps | 0 | - | 4.87 | 118,633 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,395 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,651 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,894 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,920 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,845 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,155 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,284 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,790 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,359 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,089 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,803 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,674 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,469 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,705 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,797 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,574 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,537 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,610 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,521 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,295 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,907 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,451 |
| Largest Countries By Category | 0 | - | 4.97 | 158,699 |
| Countries by Countries | 0 | - | 4.96 | 63,536 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,138 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,369 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,198 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,646 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,446 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,805 |
| All Countries by Population With a Map | 0 | - | 4.98 | 110,644 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,296 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,008 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,638 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,396 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,115 |
| Island Countries | 0 | - | 4.99 | 712,169 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,570 |
| Northernmost Countries | 0 | - | 4.99 | 363,531 |
| Countries of South America | 0 | - | 5.00 | 931,263 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,606 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,133 |
| "Land" Countries | 0 | - | 4.98 | 338,119 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,177 |
| Countries by Independence Day | 0 | - | 4.62 | 52,847 |
| Former Countries by Capital | 0 | - | 4.45 | 127,764 |
| Former Countries | 0 | - | 4.77 | 134,140 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,313 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,387 |
| Battle to Country | 0 | - | 4.91 | 53,876 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,118 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,883 |
| Countries with Megacities | 0 | - | 4.99 | 266,571 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,586 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,966 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,886 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,072 |
| Countries by Official Language | 0 | - | 4.95 | 195,822 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,383 |
| Countries in their Native Language | 0 | - | 4.99 | 199,603 |
| Subdivisions by Country | 0 | - | 4.87 | 50,575 |
| Megadiverse Countries | 0 | - | 4.96 | 135,210 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,805 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,491 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,398 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,196 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,477 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,521 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,783 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,230 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,299 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,326 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,389 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,112 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,531 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,649 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,103 |
| World Map Quiz | 0 | - | 4.81 | 65,533 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,748 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,611 |
| Countries by Road Signs | 0 | - | 4.98 | 54,281 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,046 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,976 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,457 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,312 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,312 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,440 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,636 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,633 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,346 |
| Widest Countries East to West | 0 | - | 4.92 | 130,351 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,146 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,479 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,889 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,386 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,469 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,871 |
| Countries with Double Letters | 0 | - | 4.96 | 96,857 |
| Countries that End in N | 0 | - | 4.95 | 171,742 |
| Countries with Five Letters | 0 | - | 4.96 | 283,477 |
| Countries with Six Letters | 0 | - | 4.94 | 214,220 |
| Countries with W | 0 | - | 4.96 | 160,794 |
| Countries with Z | 0 | - | 4.98 | 292,205 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,142 |
| Countries That End in U | 0 | - | 4.95 | 121,099 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,954 |
| Countries that End in O | 0 | - | 4.92 | 159,742 |
| Countries that End in R | 0 | - | 4.87 | 119,128 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,885 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,652 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,039 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,745 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,672 |
| Countries That End in Y | 0 | - | 4.91 | 186,041 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,338 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,169 |
| Countries that End in I | 0 | - | 4.94 | 135,261 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,504 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,995 |
| Countries That End in NIA | 0 | - | 4.92 | 109,984 |
| Countries That End in BIA | 0 | - | 4.93 | 149,503 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,419 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,691 |
| Countries That End in RIA | 0 | - | 4.93 | 127,001 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,288 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,362 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,062 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,502 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,069 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,759 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,251 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,516 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,813 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,597 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,620 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,301 |
| Countries that End in L | 0 | - | 4.94 | 157,056 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,407 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,324 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,101 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,718 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,329 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,280 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,041 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,370 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,168 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,861 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,140 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,208 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,799 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,174 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,685 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,111 |
