| Independence from Whom | 0 | - | 4.99 | 210,103 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,031 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,111 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,307 |
| Countries by Founding Story | 0 | - | 4.95 | 76,701 |
| Modern-Day Countries of the Umayyad Caliphate on a Map | 0 | - | 4.98 | 68,340 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,595,899 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,042,399 |
| Recently Independent Countries | 0 | - | 4.98 | 158,184 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,826 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,623 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,358 |
| Countries by Former Name | 0 | - | 4.99 | 124,497 |
| Historical City to Country | 0 | - | 4.84 | 78,224 |
| Landlocked Countries | 0 | - | 4.99 | 415,177 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,554 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,516 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,422 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,783 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,687 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,942 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,392 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,983 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,319 |
| Countries of Europe in 1650 with a Map | 0 | - | 4.95 | 67,963 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,940 |
| Modern-Day Countries of the Inca Empire on a Map | 0 | - | 4.83 | 57,003 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,729,327 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,221 |
| Himalayan Countries | 0 | - | 4.95 | 135,914 |
| Andean Countries | 0 | - | 4.94 | 83,138 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,461 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,583 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,163 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,814 |
| Danube Countries | 0 | - | 4.97 | 71,247 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,975 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,692 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,828 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,752 |
| European Landlocked Countries | 0 | - | 4.99 | 145,946 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,490 |
| Countries with the Most Species | 0 | - | 4.99 | 95,330 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,616 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,264 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,436 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,056 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,707 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,062 |
| Countries in the Alps | 0 | - | 4.86 | 117,103 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,737 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,561 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,149 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,567 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,364 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,130 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,770 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,885 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,671 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,197 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,266 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,133 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,601 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,867 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,879 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,423 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,786 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,347 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,003 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,176 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,142 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,715 |
| Largest Countries By Category | 0 | - | 4.97 | 156,997 |
| Countries by Countries | 0 | - | 4.96 | 62,424 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,634 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,019 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,375 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,235 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,259 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,919 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,667 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,713 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,676 |
| Island Countries | 0 | - | 4.99 | 708,258 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,487 |
| Northernmost Countries | 0 | - | 4.99 | 358,607 |
| Countries of South America | 0 | - | 5.00 | 917,522 |
| Countries of Oceania | 0 | - | 5.00 | 1,043,760 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,853,718 |
| "Land" Countries | 0 | - | 4.98 | 334,059 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,771 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,544 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,259 |
| Battle to Country | 0 | - | 4.91 | 52,673 |
| Countries of Europe in 1815 With a Map | 0 | - | 4.99 | 149,240 |
| Countries by Independence Day | 0 | - | 4.56 | 52,640 |
| Former Countries by Capital | 0 | - | 4.45 | 127,161 |
| Former Countries | 0 | - | 4.75 | 132,850 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,855 |
| Countries with Megacities | 0 | - | 4.99 | 248,077 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,730 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,321 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,123 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,267 |
| Countries by Official Language | 0 | - | 4.95 | 193,133 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,637 |
| Countries in their Native Language | 0 | - | 4.99 | 196,972 |
| Subdivisions by Country | 0 | - | 4.86 | 50,136 |
| Megadiverse Countries | 0 | - | 4.97 | 134,311 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,128 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,004 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,531 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,900 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,861 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,222 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,409 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,290 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,781 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,885 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,505 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,607 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,576 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,786 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,116 |
| Countries in Southeast Asia With an Empty Map | 0 | - | 4.97 | 100,960 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,068 |
| World Map Quiz | 0 | - | 4.81 | 63,761 |
| Empty World Map without 20 Random Countries | 0 | - | 4.94 | 135,552 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,548 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,561 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,315 |
| Countries by Road Signs | 0 | - | 4.98 | 53,261 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,749 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,496 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,219 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,259 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,093 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,295 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,483 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,068 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,512 |
| Widest Countries East to West | 0 | - | 4.92 | 129,010 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,281 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,463 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,641 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,854 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,808 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,211 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,496 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,639 |
| Countries with Double Letters | 0 | - | 4.96 | 93,663 |
| Countries that End in N | 0 | - | 4.94 | 157,125 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,011 |
| Countries with Six Letters | 0 | - | 4.93 | 210,668 |
| Countries with W | 0 | - | 4.97 | 158,409 |
| Countries with Z | 0 | - | 4.98 | 288,215 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,747 |
| Countries That End in U | 0 | - | 4.95 | 119,603 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,855 |
| Countries that End in O | 0 | - | 4.92 | 158,641 |
| Countries that End in R | 0 | - | 4.87 | 118,367 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,929 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,394 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,535 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,639 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,190 |
| Countries That End in Y | 0 | - | 4.90 | 185,282 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,603 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,888 |
| Countries that End in I | 0 | - | 4.94 | 134,534 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,450 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,294 |
| Countries That End in NIA | 0 | - | 4.92 | 109,111 |
| Countries That End in BIA | 0 | - | 4.92 | 147,845 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,244 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,630 |
| Countries That End in RIA | 0 | - | 4.93 | 126,193 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,173 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,677 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,669 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,021 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,572 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,020 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,276 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,787 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,674 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,890 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,333 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,979 |
| Countries that End in L | 0 | - | 4.94 | 156,148 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,072 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,019 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,618 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,443 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,519 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,939 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,614 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,629 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,637 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,008 |
