| Independence from Whom | 0 | - | 4.99 | 211,873 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,567 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,541 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,339 |
| Country by Photo of its Leader | 0 | - | 4.72 | 124,161 |
| Recently Independent Countries | 0 | - | 4.98 | 159,354 |
| Countries of the World in 1900 | 0 | - | 4.89 | 85,043 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 195,465 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 151,051 |
| Countries by Former Name | 0 | - | 4.99 | 125,208 |
| Historical City to Country | 0 | - | 4.84 | 78,582 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,509,336 |
| Landlocked Countries | 0 | - | 4.99 | 421,097 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,736 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 135,381 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.88 | 76,241 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.98 | 92,811 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 67,286 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 73,584 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 97,314 |
| Countries Settled by Vikings | 0 | - | 4.93 | 121,680 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,535 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 99,860 |
| Political Movements by Country | 0 | - | 4.46 | 72,568 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,771,981 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,677 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,813 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,020 |
| Himalayan Countries | 0 | - | 4.95 | 138,338 |
| Andean Countries | 0 | - | 4.93 | 84,386 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,609 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,524 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,236 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,643 |
| Danube Countries | 0 | - | 4.97 | 71,907 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,883 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,310 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,109 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,579 |
| European Landlocked Countries | 0 | - | 4.99 | 147,041 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,473 |
| Countries with the Most Species | 0 | - | 4.99 | 103,154 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,621 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,537 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,678 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,475 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,156 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,565 |
| Countries in the Alps | 0 | - | 4.87 | 118,053 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,421 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,847 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,584 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,512 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,393 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,875 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,551 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,411 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,118 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,755 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,588 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,451 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,124 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,391 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,422 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,677 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,221 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,729 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,904 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,494 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,840 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,150 |
| Largest Countries By Category | 0 | - | 4.97 | 158,031 |
| Countries by Countries | 0 | - | 4.96 | 63,090 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,960 |
| Battle to Country | 0 | - | 4.91 | 53,415 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,241 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,577 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,793 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,803 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,261 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,657 |
| Island Countries | 0 | - | 4.99 | 710,681 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 161,602 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,381,300 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,678 |
| Northernmost Countries | 0 | - | 4.99 | 361,544 |
| Countries of South America | 0 | - | 5.00 | 925,951 |
| Countries of Oceania | 0 | - | 5.00 | 1,055,189 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,874,119 |
| "Land" Countries | 0 | - | 4.98 | 337,035 |
| Countries by Independence Day | 0 | - | 4.61 | 52,756 |
| Former Countries by Capital | 0 | - | 4.45 | 127,522 |
| Former Countries | 0 | - | 4.75 | 133,848 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 116,110 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 97,320 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,670 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 199,552 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 120,674 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.87 | 134,910 |
| Communist Countries in History | 0 | - | 4.63 | 496,042 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,712 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,595 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,648 |
| Countries with Megacities | 0 | - | 4.99 | 263,928 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,500 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,341 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,771 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,394 |
| Countries by Official Language | 0 | - | 4.95 | 195,060 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,132 |
| Countries in their Native Language | 0 | - | 4.99 | 198,632 |
| Subdivisions by Country | 0 | - | 4.86 | 50,386 |
| Megadiverse Countries | 0 | - | 4.96 | 134,937 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,925 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,297 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,872 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,077 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,998 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,978 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,596 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,053 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,485 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,825 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,135 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,911 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,296 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,440 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,907 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,261 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,909 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,167 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,893 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,952 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,808 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,926 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,222 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,393 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,504 |
| Widest Countries East to West | 0 | - | 4.92 | 129,565 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,430 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,269 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,088 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,696 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,479 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,765 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,333 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,782 |
| Countries with Double Letters | 0 | - | 4.96 | 95,967 |
| Countries that End in N | 0 | - | 4.95 | 170,867 |
| Countries with Five Letters | 0 | - | 4.96 | 281,994 |
| Countries with Six Letters | 0 | - | 4.94 | 213,282 |
| Countries with W | 0 | - | 4.97 | 160,135 |
| Countries with Z | 0 | - | 4.98 | 291,159 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,487 |
| Countries That End in U | 0 | - | 4.95 | 120,737 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,260 |
| Countries that End in O | 0 | - | 4.92 | 159,433 |
| Countries that End in R | 0 | - | 4.87 | 118,901 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,668 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,860 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,558 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,382 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,291 |
| Countries That End in Y | 0 | - | 4.91 | 185,808 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,754 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,730 |
| Countries that End in I | 0 | - | 4.94 | 135,031 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,922 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,753 |
| Countries That End in NIA | 0 | - | 4.92 | 109,700 |
| Countries That End in BIA | 0 | - | 4.93 | 149,099 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,991 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,319 |
| Countries That End in RIA | 0 | - | 4.93 | 126,735 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,914 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,314 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,542 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,946 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,513 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,511 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,927 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,413 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,422 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,362 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,854 |
| Countries that End in L | 0 | - | 4.94 | 156,747 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,197 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,238 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,952 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,891 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,918 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,569 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,517 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,894 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,418 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,280 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,793 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,048 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,671 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,808 |
