| Warsaw Pact Countries | 0 | - | 4.83 | 84,629 |
| Independence from Whom | 0 | - | 4.99 | 212,680 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,163 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,727 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,844 |
| Countries by Founding Story | 0 | - | 4.95 | 77,631 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,672 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,358 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,808 |
| Countries by Former Name | 0 | - | 4.99 | 125,627 |
| Historical City to Country | 0 | - | 4.85 | 78,791 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,759,392 |
| Landlocked Countries | 0 | - | 4.99 | 424,183 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,794,387 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,184 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,739 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,420 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,100 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,439 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,763 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,625 |
| Former Capitals | 0 | - | 4.88 | 71,619 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,493 |
| Himalayan Countries | 0 | - | 4.94 | 139,656 |
| Andean Countries | 0 | - | 4.94 | 85,124 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,311 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,550 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,878 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,166 |
| Danube Countries | 0 | - | 4.97 | 72,246 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,376 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,672 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,792 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,276 |
| European Landlocked Countries | 0 | - | 4.99 | 147,421 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,032 |
| Countries with the Most Species | 0 | - | 4.99 | 103,451 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,167 |
| Countries Settled by Vikings | 0 | - | 4.92 | 121,937 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,696 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,807 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,723 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,451 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,873 |
| Countries in the Alps | 0 | - | 4.87 | 118,529 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,199 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,528 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,837 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,845 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,773 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,115 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,961 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,702 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,325 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,039 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,778 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,643 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,416 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,660 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,746 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,440 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,493 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,424 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,445 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,075 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,758 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,406 |
| Largest Countries By Category | 0 | - | 4.97 | 158,597 |
| Countries by Countries | 0 | - | 4.96 | 63,472 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,049 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,357 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 70,094 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,636 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,371 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,767 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,410 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,236 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,950 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,686 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,214 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,745 |
| Island Countries | 0 | - | 4.99 | 711,936 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,921 |
| Northernmost Countries | 0 | - | 4.99 | 363,270 |
| Countries of South America | 0 | - | 5.00 | 930,469 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,859 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,523 |
| "Land" Countries | 0 | - | 4.98 | 337,988 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,115 |
| Countries by Independence Day | 0 | - | 4.62 | 52,836 |
| Former Countries by Capital | 0 | - | 4.45 | 127,737 |
| Former Countries | 0 | - | 4.77 | 134,095 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,926 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,339 |
| Battle to Country | 0 | - | 4.91 | 53,768 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,087 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,654 |
| Countries with Megacities | 0 | - | 4.99 | 266,153 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,389 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,831 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,676 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,953 |
| Countries by Official Language | 0 | - | 4.95 | 195,724 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,227 |
| Countries in their Native Language | 0 | - | 4.99 | 199,494 |
| Subdivisions by Country | 0 | - | 4.87 | 50,549 |
| Megadiverse Countries | 0 | - | 4.96 | 135,172 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,654 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,469 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,366 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,172 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,411 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,488 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,764 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,215 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,140 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,286 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,356 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,077 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,496 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,614 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,938 |
| World Map Quiz | 0 | - | 4.81 | 65,410 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,457 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,553 |
| Countries by Road Signs | 0 | - | 4.98 | 54,235 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,923 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,863 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,400 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,134 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,252 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,380 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,575 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,607 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,790 |
| Widest Countries East to West | 0 | - | 4.92 | 130,276 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,549 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,068 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,452 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,960 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,835 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,329 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,457 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,859 |
| Countries with Double Letters | 0 | - | 4.96 | 96,754 |
| Countries that End in N | 0 | - | 4.95 | 171,642 |
| Countries with Five Letters | 0 | - | 4.96 | 283,328 |
| Countries with Six Letters | 0 | - | 4.94 | 214,096 |
| Countries with W | 0 | - | 4.96 | 160,709 |
| Countries with Z | 0 | - | 4.98 | 292,063 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,061 |
| Countries That End in U | 0 | - | 4.95 | 121,058 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,862 |
| Countries that End in O | 0 | - | 4.92 | 159,705 |
| Countries that End in R | 0 | - | 4.87 | 119,098 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,847 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,537 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,975 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,689 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,611 |
| Countries That End in Y | 0 | - | 4.91 | 186,014 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,244 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,115 |
| Countries that End in I | 0 | - | 4.94 | 135,235 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,429 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,958 |
| Countries That End in NIA | 0 | - | 4.92 | 109,945 |
| Countries That End in BIA | 0 | - | 4.93 | 149,429 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,369 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,648 |
| Countries That End in RIA | 0 | - | 4.93 | 126,963 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,248 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,189 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,993 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,430 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,981 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,720 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,220 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,503 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,751 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,567 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,551 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,252 |
| Countries that End in L | 0 | - | 4.94 | 157,013 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,876 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,313 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,174 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,108 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,150 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,169 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,968 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,325 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,094 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,787 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,090 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,185 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,769 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,147 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,812 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,887 |
