| Independence from Whom | 0 | - | 4.99 | 212,420 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,972 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,671 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,658 |
| Countries by Founding Story | 0 | - | 4.95 | 77,487 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,690,890 |
| Recently Independent Countries | 0 | - | 4.98 | 159,649 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,480 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 196,103 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,607 |
| Countries by Former Name | 0 | - | 4.99 | 125,500 |
| Historical City to Country | 0 | - | 4.84 | 78,729 |
| Landlocked Countries | 0 | - | 4.99 | 423,320 |
| Most Populous Countries by Year | 0 | - | 4.83 | 111,058 |
| First Countries to Reach 5 Million People | 0 | - | 4.93 | 135,633 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,367 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 93,034 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,394 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,702 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,538 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,869 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,602 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 69,921 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 100,215 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,687 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,788,266 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,142 |
| Himalayan Countries | 0 | - | 4.94 | 139,325 |
| Andean Countries | 0 | - | 4.93 | 84,936 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,157 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,321 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,730 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,042 |
| Danube Countries | 0 | - | 4.97 | 72,161 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,239 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,569 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,603 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,106 |
| European Landlocked Countries | 0 | - | 4.99 | 147,319 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,889 |
| Countries with the Most Species | 0 | - | 4.99 | 103,374 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,023 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,660 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,776 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,641 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,401 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,806 |
| Countries in the Alps | 0 | - | 4.87 | 118,419 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,898 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,348 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,779 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,757 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,667 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,066 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,854 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,637 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,266 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,988 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,738 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,611 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,348 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,599 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,667 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,247 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,434 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,959 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,288 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,676 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,513 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,335 |
| Largest Countries By Category | 0 | - | 4.97 | 158,464 |
| Countries by Countries | 0 | - | 4.96 | 63,391 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,914 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,333 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,602 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,101 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,165 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,829 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,793 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,943 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,209 |
| Island Countries | 0 | - | 4.99 | 711,553 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,051,636 |
| Northernmost Countries | 0 | - | 4.99 | 362,664 |
| Countries of South America | 0 | - | 5.00 | 929,278 |
| Countries of Oceania | 0 | - | 5.00 | 1,059,302 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,881,635 |
| "Land" Countries | 0 | - | 4.98 | 337,725 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 174,018 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,387,213 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 79,217 |
| Battle to Country | 0 | - | 4.91 | 53,681 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 69,024 |
| Countries by Independence Day | 0 | - | 4.62 | 52,814 |
| Former Countries by Capital | 0 | - | 4.45 | 127,677 |
| Former Countries | 0 | - | 4.77 | 134,028 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,322 |
| Countries with Megacities | 0 | - | 4.99 | 265,534 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,123 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,686 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,383 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,759 |
| Countries by Official Language | 0 | - | 4.95 | 195,528 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,777 |
| Countries in their Native Language | 0 | - | 4.99 | 199,318 |
| Subdivisions by Country | 0 | - | 4.87 | 50,503 |
| Megadiverse Countries | 0 | - | 4.96 | 135,118 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,340 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,431 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,313 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,148 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,313 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,462 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,437 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,725 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,193 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 77,975 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,977 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,292 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,031 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,453 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,571 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,648 |
| Countries with the Most Ascents of Mount Everest | 0 | - | 4.95 | 58,434 |
| World Map Quiz | 0 | - | 4.81 | 65,292 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,976 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,488 |
| Countries by Road Signs | 0 | - | 4.98 | 54,155 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,375 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,459 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,159 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,700 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 111,056 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,168 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,426 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,515 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,682 |
| Widest Countries East to West | 0 | - | 4.92 | 129,787 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,486 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,909 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,404 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,866 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,748 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,004 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,425 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,828 |
| Countries with Double Letters | 0 | - | 4.96 | 96,558 |
| Countries that End in N | 0 | - | 4.95 | 171,460 |
| Countries with Five Letters | 0 | - | 4.96 | 283,019 |
| Countries with Six Letters | 0 | - | 4.94 | 213,895 |
| Countries with W | 0 | - | 4.96 | 160,562 |
| Countries with Z | 0 | - | 4.98 | 291,814 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,926 |
| Countries That End in U | 0 | - | 4.95 | 120,978 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,698 |
| Countries that End in O | 0 | - | 4.92 | 159,630 |
| Countries that End in R | 0 | - | 4.87 | 119,050 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,803 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,379 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,862 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,609 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,518 |
| Countries That End in Y | 0 | - | 4.91 | 185,962 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,111 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,018 |
| Countries that End in I | 0 | - | 4.94 | 135,189 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,290 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,902 |
| Countries That End in NIA | 0 | - | 4.92 | 109,870 |
| Countries That End in BIA | 0 | - | 4.93 | 149,346 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,267 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,556 |
| Countries That End in RIA | 0 | - | 4.93 | 126,906 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,153 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,957 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,888 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,323 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,875 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,657 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,148 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,476 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,658 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,520 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,449 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,146 |
| Countries that End in L | 0 | - | 4.94 | 156,956 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,428 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,298 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,119 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,046 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,092 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,002 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,848 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,262 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,999 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,646 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,004 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,151 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,745 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,071 |
