| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 109,615 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,163,325 |
| Countries with Glaciers | 0 | - | 4.97 | 104,851 |
| Countries with the Most Forest | 0 | - | 4.87 | 146,877 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,407 |
| Landlocked Countries | 0 | - | 4.99 | 416,648 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,561 |
| Biggest Trading Partners – United Kingdom | 0 | - | 4.93 | 79,891 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,846 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,829 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,775 |
| Island Countries | 0 | - | 4.99 | 708,809 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,931 |
| Himalayan Countries | 0 | - | 4.95 | 136,497 |
| Andean Countries | 0 | - | 4.95 | 83,489 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,752 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,997 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,419 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,026 |
| Danube Countries | 0 | - | 4.97 | 71,430 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,216 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,848 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,152 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,119 |
| European Landlocked Countries | 0 | - | 4.99 | 146,129 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,760 |
| Countries with the Most Species | 0 | - | 4.99 | 101,518 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,898 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,328 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,510 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,158 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,809 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,190 |
| Countries in the Alps | 0 | - | 4.86 | 117,324 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,901 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,892 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,253 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,740 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,820 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,254 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,983 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,994 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,803 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,328 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,365 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,203 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,729 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,994 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,003 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,711 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,895 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,429 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,245 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,006 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,564 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,827 |
| Largest Countries By Category | 0 | - | 4.97 | 157,253 |
| Countries by Countries | 0 | - | 4.96 | 62,592 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,441 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,870 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,080 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,085 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,331 |
| Northernmost Countries | 0 | - | 4.99 | 359,377 |
| Countries of South America | 0 | - | 5.00 | 919,673 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,665 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,721 |
| "Land" Countries | 0 | - | 4.98 | 334,601 |
| Elements Named for Countries | 0 | - | 4.52 | 24,541 |
| Asian Countries with the Most Christians | 0 | - | 4.85 | 96,701 |
| African Countries with the Most Christians | 0 | - | 4.94 | 75,174 |
| Top 10 Biggest Economies in Europe | 0 | - | 4.98 | 198,074 |
| Top 10 Biggest Economies in Africa | 0 | - | 4.99 | 119,766 |
| Top 10 Biggest Economies in Asia | 0 | - | 4.85 | 119,453 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,439,926 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,838 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,271 |
| Countries with Megacities | 0 | - | 4.99 | 248,934 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,124 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,543 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,483 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,499 |
| Countries by Official Language | 0 | - | 4.95 | 194,007 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,534 |
| Countries in their Native Language | 0 | - | 4.99 | 197,632 |
| Independence from Whom | 0 | - | 4.99 | 210,805 |
| Subdivisions by Country | 0 | - | 4.86 | 50,196 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,325 |
| Megadiverse Countries | 0 | - | 4.96 | 134,538 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,827 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,073 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,626 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,440 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,211 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,581 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,547 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,371 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,805 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,158 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,579 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,686 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,641 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,859 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,202 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,564 |
| World Map Quiz | 0 | - | 4.81 | 64,083 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,376 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,693 |
| Countries by Founding Story | 0 | - | 4.95 | 76,872 |
| Countries by Road Signs | 0 | - | 4.98 | 53,412 |
| Country Picture Puzzle Game #1 | 0 | - | 4.86 | 85,964 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,059 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,666 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,394 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,705 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,266 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,458 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,624 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,148 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,636 |
| Widest Countries East to West | 0 | - | 4.92 | 129,139 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,329 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,644 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,916 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,956 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,978 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,359 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,097 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,670 |
| Countries with Double Letters | 0 | - | 4.96 | 94,124 |
| Countries that End in N | 0 | - | 4.95 | 165,544 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,564 |
| Countries with Six Letters | 0 | - | 4.93 | 211,133 |
| Countries with W | 0 | - | 4.97 | 158,801 |
| Countries with Z | 0 | - | 4.98 | 288,744 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,019 |
| Countries That End in U | 0 | - | 4.95 | 119,909 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,149 |
| Countries that End in O | 0 | - | 4.92 | 158,859 |
| Countries that End in R | 0 | - | 4.87 | 118,507 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,266 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,739 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,728 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,807 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,370 |
| Countries That End in Y | 0 | - | 4.90 | 185,419 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,827 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,086 |
| Countries that End in I | 0 | - | 4.94 | 134,667 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,686 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,408 |
| Countries That End in NIA | 0 | - | 4.92 | 109,295 |
| Countries That End in BIA | 0 | - | 4.93 | 148,560 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,422 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,765 |
| Countries That End in RIA | 0 | - | 4.93 | 126,345 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,325 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,074 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,864 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,201 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,778 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,139 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,434 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,936 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,831 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,995 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,518 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,196 |
| Countries that End in L | 0 | - | 4.94 | 156,288 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,873 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,066 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,711 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,562 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,612 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,314 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,804 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,322 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,819 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,247 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,046 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,869 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,292 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,518 |
| Top 10 Richest Countries in Africa | 0 | - | 4.85 | 75,519 |
| Top 10 Richest Countries in Europe | 0 | - | 4.90 | 148,789 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,517 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,813,562 |
| One Border Countries | 0 | - | 4.98 | 466,393 |
| Biggest Trading Partners - European Union | 0 | - | 4.91 | 72,412 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,205 |
| U.S. Cities with the Biggest Economies | 0 | - | 4.84 | 72,405 |
| Countries with the Most HIV | 0 | - | 4.46 | 44,385 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 45,071 |
| Hindu Countries | 0 | - | 4.86 | 49,823 |
| Countries that Desalinate the Most Water | 0 | - | 4.77 | 41,472 |
| Countries in a JetPunk Fish of the World Map | 0 | - | 4.99 | 60,024 |
| Countries in a Blue JetPunk Fish of the World Map | 0 | - | 4.92 | 71,621 |
| Five Most Guessed Country Flags by Continent | 0 | - | 4.98 | 53,258 |
