| Independence from Whom | 0 | - | 4.99 | 210,826 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,342 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,224 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,607 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,627 |
| Recently Independent Countries | 0 | - | 4.98 | 158,388 |
| Countries of the World in 1900 | 0 | - | 4.89 | 84,153 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 194,140 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,839 |
| Countries by Former Name | 0 | - | 4.99 | 124,679 |
| Historical City to Country | 0 | - | 4.84 | 78,329 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,169,246 |
| Landlocked Countries | 0 | - | 4.99 | 416,726 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,829 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,703 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,585 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 85,353 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.92 | 66,802 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,053 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,586 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,103 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,369 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,192 |
| Political Movements by Country | 0 | - | 4.46 | 72,395 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,741,054 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,210 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,995 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,968 |
| Himalayan Countries | 0 | - | 4.95 | 136,533 |
| Andean Countries | 0 | - | 4.95 | 83,505 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,767 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,028 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,434 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,034 |
| Danube Countries | 0 | - | 4.97 | 71,439 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,224 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,853 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,169 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,145 |
| European Landlocked Countries | 0 | - | 4.99 | 146,137 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,778 |
| Countries with the Most Species | 0 | - | 4.99 | 101,754 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,907 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,336 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,513 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,164 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,813 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,195 |
| Countries in the Alps | 0 | - | 4.86 | 117,341 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,911 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,919 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,257 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,748 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,832 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,259 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,996 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,998 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,809 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,333 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,371 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,206 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,731 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,004 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,012 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,729 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,900 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,433 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,257 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,050 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,586 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,835 |
| Largest Countries By Category | 0 | - | 4.97 | 157,269 |
| Countries by Countries | 0 | - | 4.96 | 62,597 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,423 |
| Battle to Country | 0 | - | 4.91 | 52,923 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,082 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,089 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,458 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,919 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,854 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,834 |
| Island Countries | 0 | - | 4.99 | 708,843 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,942 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,620 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,431 |
| Northernmost Countries | 0 | - | 4.99 | 359,410 |
| Countries of South America | 0 | - | 5.00 | 919,776 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,840 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,981 |
| "Land" Countries | 0 | - | 4.98 | 334,627 |
| Countries by Independence Day | 0 | - | 4.61 | 52,674 |
| Former Countries by Capital | 0 | - | 4.45 | 127,248 |
| Former Countries | 0 | - | 4.75 | 132,977 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,438 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,715 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,180 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,094 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,778 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,556 |
| Communist Countries in History | 0 | - | 4.63 | 493,929 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,440,049 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,872 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,304 |
| Countries with Megacities | 0 | - | 4.99 | 249,000 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,155 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,561 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,504 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,522 |
| Countries by Official Language | 0 | - | 4.95 | 194,026 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,615 |
| Countries in their Native Language | 0 | - | 4.99 | 197,643 |
| Subdivisions by Country | 0 | - | 4.86 | 50,204 |
| Megadiverse Countries | 0 | - | 4.96 | 134,546 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,847 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,077 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,633 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,452 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,551 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,373 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,807 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,200 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,582 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,688 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,647 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,863 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,204 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,590 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,704 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,069 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,674 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,403 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,726 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,273 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,469 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,632 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,151 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,644 |
| Widest Countries East to West | 0 | - | 4.92 | 129,142 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,331 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,661 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,924 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,960 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,985 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,365 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,103 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,678 |
| Countries with Double Letters | 0 | - | 4.96 | 94,154 |
| Countries that End in N | 0 | - | 4.95 | 166,079 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,599 |
| Countries with Six Letters | 0 | - | 4.93 | 211,150 |
| Countries with W | 0 | - | 4.97 | 158,825 |
| Countries with Z | 0 | - | 4.98 | 288,790 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,046 |
| Countries That End in U | 0 | - | 4.95 | 119,927 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,168 |
| Countries that End in O | 0 | - | 4.92 | 158,869 |
| Countries that End in R | 0 | - | 4.87 | 118,512 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,293 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,759 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,748 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,814 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,383 |
| Countries That End in Y | 0 | - | 4.90 | 185,429 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,841 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,092 |
| Countries that End in I | 0 | - | 4.94 | 134,670 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,698 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,414 |
| Countries That End in NIA | 0 | - | 4.92 | 109,296 |
| Countries That End in BIA | 0 | - | 4.93 | 148,567 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,430 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,774 |
| Countries That End in RIA | 0 | - | 4.93 | 126,348 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,335 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,093 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,872 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,207 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,788 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,144 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,440 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,946 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,843 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,001 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,208 |
| Countries that End in L | 0 | - | 4.94 | 156,292 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,906 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,070 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,713 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,565 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,620 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,332 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,812 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,332 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,823 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,258 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,053 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,870 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,296 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,524 |
