| Independence from Whom | 0 | - | 4.99 | 212,292 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,869 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,644 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,577 |
| Countries by Founding Story | 0 | - | 4.95 | 77,441 |
| Landlocked Countries | 0 | - | 4.99 | 422,788 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,646,477 |
| Recently Independent Countries | 0 | - | 4.98 | 159,565 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,371 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,943 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,469 |
| Countries by Former Name | 0 | - | 4.99 | 125,436 |
| Historical City to Country | 0 | - | 4.84 | 78,679 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,919 |
| Himalayan Countries | 0 | - | 4.95 | 139,087 |
| Andean Countries | 0 | - | 4.93 | 84,828 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,058 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,161 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,635 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,952 |
| Danube Countries | 0 | - | 4.97 | 72,114 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,157 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,520 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,486 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,984 |
| European Landlocked Countries | 0 | - | 4.99 | 147,252 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,799 |
| Countries with the Most Species | 0 | - | 4.99 | 103,327 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,923 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,638 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,757 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,604 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,337 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,755 |
| Countries in the Alps | 0 | - | 4.87 | 118,333 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,636 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,231 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,733 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,688 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,609 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,013 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,775 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,582 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,231 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,938 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,701 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,579 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,309 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,548 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,616 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,101 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,379 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,586 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,226 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,374 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,371 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,297 |
| Largest Countries By Category | 0 | - | 4.97 | 158,363 |
| Countries by Countries | 0 | - | 4.96 | 63,334 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,797 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,314 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,588 |
| All Countries by Population With a Map | 0 | - | 4.99 | 109,863 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,105 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,762 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,784,387 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,963 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,571 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,341 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,981 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,371 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,676 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,484 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,819 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,582 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,787 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,126 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,637 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,335 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,752 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,830 |
| Island Countries | 0 | - | 4.99 | 711,325 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,905 |
| Northernmost Countries | 0 | - | 4.99 | 362,356 |
| Countries of South America | 0 | - | 5.00 | 928,511 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,363 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,753 |
| "Land" Countries | 0 | - | 4.98 | 337,569 |
| Former Countries by Capital | 0 | - | 4.45 | 127,632 |
| Former Countries | 0 | - | 4.75 | 133,986 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,691 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,138 |
| Countries with Megacities | 0 | - | 4.99 | 265,147 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,955 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,603 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,219 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,675 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,967 |
| Countries by Official Language | 0 | - | 4.95 | 195,419 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,606 |
| Countries in their Native Language | 0 | - | 4.99 | 199,201 |
| Subdivisions by Country | 0 | - | 4.87 | 50,469 |
| Megadiverse Countries | 0 | - | 4.96 | 135,080 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,227 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,399 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,276 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,135 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,234 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,393 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,700 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,174 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,858 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,934 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,250 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,005 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,402 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,536 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,457 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,134 |
| Battle to Country | 0 | - | 4.91 | 53,614 |
| World Map Quiz | 0 | - | 4.81 | 65,208 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,713 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,429 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,982 |
| Countries by Road Signs | 0 | - | 4.98 | 54,089 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,258 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,372 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,083 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,477 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,985 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,090 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,373 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,487 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,630 |
| Widest Countries East to West | 0 | - | 4.92 | 129,727 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,475 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,479 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,153 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,821 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,669 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,945 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,402 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,815 |
| Countries with Double Letters | 0 | - | 4.96 | 96,418 |
| Countries that End in N | 0 | - | 4.95 | 171,304 |
| Countries with Five Letters | 0 | - | 4.96 | 282,812 |
| Countries with Six Letters | 0 | - | 4.94 | 213,751 |
| Countries with W | 0 | - | 4.96 | 160,459 |
| Countries with Z | 0 | - | 4.98 | 291,662 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,827 |
| Countries That End in U | 0 | - | 4.95 | 120,916 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,590 |
| Countries that End in O | 0 | - | 4.92 | 159,570 |
| Countries that End in R | 0 | - | 4.87 | 119,007 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,769 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,263 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,778 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,550 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,467 |
| Countries That End in Y | 0 | - | 4.91 | 185,927 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,029 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,949 |
| Countries that End in I | 0 | - | 4.94 | 135,147 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,209 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,865 |
| Countries That End in NIA | 0 | - | 4.92 | 109,843 |
| Countries That End in BIA | 0 | - | 4.93 | 149,281 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,194 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,491 |
| Countries That End in RIA | 0 | - | 4.93 | 126,862 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,083 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,827 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,810 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,242 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,795 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,627 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,090 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,463 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,598 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,474 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,382 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,071 |
| Countries that End in L | 0 | - | 4.94 | 156,900 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,156 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,286 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,078 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,005 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,047 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,907 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,771 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,208 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,915 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,577 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,938 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,129 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,728 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,916 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,508 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,293 |
| One Border Countries | 0 | - | 4.98 | 470,323 |
