| Independence from Whom | 0 | - | 4.99 | 210,127 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,045 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,119 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,318 |
| Country by Photo of its Leader | 0 | - | 4.74 | 123,474 |
| Recently Independent Countries | 0 | - | 4.98 | 158,199 |
| Countries of the World in 1900 | 0 | - | 4.89 | 83,845 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 193,663 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 149,388 |
| Countries by Former Name | 0 | - | 4.99 | 124,509 |
| Historical City to Country | 0 | - | 4.84 | 78,234 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,049,675 |
| Landlocked Countries | 0 | - | 4.99 | 415,283 |
| Most Populous Countries by Year | 0 | - | 4.83 | 109,565 |
| First Countries to Reach 5 Million People | 0 | - | 4.92 | 134,529 |
| Most Populous Modern-Day Countries in 1000 AD | 0 | - | 4.87 | 75,428 |
| Most Populous Modern-Day Countries in 1 AD | 0 | - | 4.97 | 83,792 |
| Most Populous Modern-Day Countries in 1800 AD | 0 | - | 4.93 | 66,694 |
| Most Populous Modern-Day Countries in 1500 AD | 0 | - | 4.93 | 72,948 |
| Most Populous Modern-Day Countries by Century | 0 | - | 4.98 | 96,407 |
| Countries Settled by Vikings | 0 | - | 4.93 | 120,990 |
| Warsaw Pact Countries | 0 | - | 4.83 | 84,319 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 98,966 |
| Political Movements by Country | 0 | - | 4.46 | 72,339 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,730,077 |
| Countries of the Soviet Union | 0 | - | 4.98 | 194,062 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 172,777 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,256 |
| Himalayan Countries | 0 | - | 4.95 | 135,948 |
| Andean Countries | 0 | - | 4.94 | 83,159 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,478 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,610 |
| Coffee Producing Countries | 0 | - | 4.82 | 66,176 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,822 |
| Danube Countries | 0 | - | 4.97 | 71,256 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,987 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,705 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,843 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,782 |
| European Landlocked Countries | 0 | - | 4.99 | 145,953 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,503 |
| Countries with the Most Species | 0 | - | 4.99 | 95,340 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,632 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,267 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,439 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,061 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,711 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,068 |
| Countries in the Alps | 0 | - | 4.86 | 117,109 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,751 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,572 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,154 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,576 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,371 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,131 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,789 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,890 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,682 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,203 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,271 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,137 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,610 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,875 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,886 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,443 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,792 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,348 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,012 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,213 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,168 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,719 |
| Largest Countries By Category | 0 | - | 4.97 | 157,013 |
| Countries by Countries | 0 | - | 4.96 | 62,434 |
| Flags of Countries of the World in 1910 | 0 | - | 4.96 | 78,274 |
| Battle to Country | 0 | - | 4.91 | 52,681 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,021 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,930 |
| Soviet Union Country Quiz | 0 | - | 4.90 | 80,358 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 325,741 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,760 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,725 |
| Island Countries | 0 | - | 4.99 | 708,295 |
| Neutral European Countries of WWII | 0 | - | 4.91 | 160,697 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,366,800 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,041,594 |
| Northernmost Countries | 0 | - | 4.99 | 358,650 |
| Countries of South America | 0 | - | 5.00 | 917,666 |
| Countries of Oceania | 0 | - | 5.00 | 1,044,008 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,854,009 |
| "Land" Countries | 0 | - | 4.98 | 334,080 |
| Countries by Independence Day | 0 | - | 4.56 | 52,640 |
| Former Countries by Capital | 0 | - | 4.45 | 127,166 |
| Former Countries | 0 | - | 4.75 | 132,856 |
| Biggest Spanish Empire Countries | 0 | - | 4.91 | 115,235 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,502 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,017 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 197,648 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,565 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 115,557 |
| Communist Countries in History | 0 | - | 4.63 | 493,305 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,437,783 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,332 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,880 |
| Countries with Megacities | 0 | - | 4.99 | 248,123 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,763 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,342 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,148 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,283 |
| Countries by Official Language | 0 | - | 4.95 | 193,159 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,677 |
| Countries in their Native Language | 0 | - | 4.99 | 196,993 |
| Subdivisions by Country | 0 | - | 4.86 | 50,143 |
| Megadiverse Countries | 0 | - | 4.97 | 134,395 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,154 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,006 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,535 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,903 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,874 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,433 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,297 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,785 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 75,903 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,515 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,619 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,580 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,792 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,118 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,112 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,576 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,769 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,509 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,228 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,294 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,104 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,304 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,492 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,073 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,523 |
| Widest Countries East to West | 0 | - | 4.92 | 129,020 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,283 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,475 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,647 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,859 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,815 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,220 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 76,597 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,641 |
| Countries with Double Letters | 0 | - | 4.96 | 93,673 |
| Countries that End in N | 0 | - | 4.94 | 157,135 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,022 |
| Countries with Six Letters | 0 | - | 4.93 | 210,683 |
| Countries with W | 0 | - | 4.97 | 158,417 |
| Countries with Z | 0 | - | 4.98 | 288,232 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,751 |
| Countries That End in U | 0 | - | 4.95 | 119,611 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,868 |
| Countries that End in O | 0 | - | 4.92 | 158,657 |
| Countries that End in R | 0 | - | 4.87 | 118,376 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,934 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,404 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,553 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,646 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,197 |
| Countries That End in Y | 0 | - | 4.90 | 185,284 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,615 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,893 |
| Countries that End in I | 0 | - | 4.94 | 134,541 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,466 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,299 |
| Countries That End in NIA | 0 | - | 4.92 | 109,117 |
| Countries That End in BIA | 0 | - | 4.92 | 147,847 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,254 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,635 |
| Countries That End in RIA | 0 | - | 4.93 | 126,197 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,182 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,710 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,683 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,031 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,581 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,026 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,280 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,795 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,680 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,896 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,989 |
| Countries that End in L | 0 | - | 4.94 | 156,155 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,113 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,021 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,622 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,450 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,523 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,964 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,622 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 141,683 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,644 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,021 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,918 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,815 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,244 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,465 |
