| Countries of the World Quiz | 0 | - | 5.00 | 40,827,273 |
| Countries with the Highest Carbon Dioxide Emissions | 0 | - | 4.97 | 95,104 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 322,443 |
| Countries with the Most HIV | 0 | - | 4.50 | 42,758 |
| Countries with the Most Malaria Deaths | 0 | - | 4.45 | 31,796 |
| Countries with Glaciers | 0 | - | 4.98 | 95,583 |
| Countries with the Most Forest | 0 | - | 4.89 | 136,926 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,059,888 |
| Countries by Change in Carbon Dioxide Emissions | 0 | - | 4.92 | 48,091 |
| Members of the Arab League | 0 | - | 4.85 | 61,386 |
| Sahara Desert Countries | 0 | - | 4.97 | 126,510 |
| Himalayan Countries | 0 | - | 4.94 | 104,398 |
| Andean Countries | 0 | - | 4.91 | 57,858 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 58,779 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,161 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,494 |
| Coffee Producing Countries | 0 | - | 4.81 | 53,943 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,186 |
| Danube Countries | 0 | - | 4.97 | 56,573 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,603 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,782 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,986 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,214 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,986 |
| European Landlocked Countries | 0 | - | 4.99 | 115,047 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,200 |
| Countries with the Most Species | 0 | - | 4.99 | 89,207 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,244 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,631 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,965 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,157 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,341 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,634 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,046 |
| Countries in the Alps | 0 | - | 4.83 | 102,463 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,154 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 86,789 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,477 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,128 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,816 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,424 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,493 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,065 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,249 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,546 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,289 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,514 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,603 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,351 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,848 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,346 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 97,674 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,260 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,296 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 195,472 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,538 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,201 |
| Largest Countries By Category | 0 | - | 4.96 | 144,654 |
| Countries by Countries | 0 | - | 4.96 | 54,521 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,115 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,628 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,984 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 340,361 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 354,648 |
| Island Countries Quiz | 0 | - | 4.99 | 659,529 |
| Biggest Countries by Area | 0 | - | 5.00 | 931,337 |
| Northernmost Countries | 0 | - | 4.99 | 326,734 |
| Countries of South America | 0 | - | 5.00 | 791,135 |
| Countries of Oceania | 0 | - | 5.00 | 890,964 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,142,203 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,567,721 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 125,500 |
| Countries with Megacities | 0 | - | 4.99 | 196,675 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,085 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 97,677 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 94,989 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 63,639 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 247,325 |
| Countries by Official Language | 0 | - | 4.95 | 155,681 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 248,483 |
| Countries in their Native Language | 0 | - | 4.98 | 177,843 |
| Independence from Whom | 0 | - | 4.99 | 185,184 |
| Subdivisions by Country | 0 | - | 4.82 | 46,384 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,181 |
| Megadiverse Countries | 0 | - | 4.96 | 125,203 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,911 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,572 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,318 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,388 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,056 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,659 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,985 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,959 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,289 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,629 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,505 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,906 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,911 |
| Most Forested European Countries | 0 | - | 4.82 | 68,088 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,446 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,170 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 81,787 |
| World Map Quiz | 0 | - | 4.90 | 49,111 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 112,833 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 81,328 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,427 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,736 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,818 |
| Countries With the Most Languages | 0 | - | 4.90 | 173,173 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,192 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,448 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,128 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,797 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,308 |
| Widest Countries East to West | 0 | - | 4.93 | 119,227 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,790 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,849 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,586 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 85,292 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,701 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,041 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,411 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,018 |
| Countries with Double Letters | 0 | - | 4.96 | 68,024 |
| Countries that End in N | 0 | - | 4.93 | 132,379 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,349 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 186,742 |
| Countries with W | 0 | - | 4.97 | 122,499 |
| Countries with Z | 0 | - | 4.98 | 244,070 |
| Countries with Letters Missing | 0 | - | 4.97 | 155,358 |
| Countries That End in U | 0 | - | 4.95 | 107,415 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,183 |
| Countries that End in O | 0 | - | 4.92 | 146,810 |
| Countries that End in R | 0 | - | 4.86 | 96,385 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,163 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,047 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,595 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,101 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,143 |
| Countries That End in Y | 0 | - | 4.90 | 161,569 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 160,800 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,591 |
| Countries that End in I | 0 | - | 4.92 | 114,429 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,349 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,174 |
| Countries That End in NIA | 0 | - | 4.93 | 100,736 |
| Countries That End in BIA | 0 | - | 4.91 | 125,940 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,085 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,604 |
| Countries That End in RIA | 0 | - | 4.90 | 100,849 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,315 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 200,366 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,499 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,371 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,188 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,116 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,579 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,737 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,547 |
| Countries that End in L | 0 | - | 4.95 | 134,155 |
| "Land" Countries | 0 | - | 4.98 | 288,956 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,625 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,162 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,181 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,100 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,495 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 207,579 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 165,714 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,316 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 132,559 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 193,631 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,736 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,813 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,995 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,219 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,950 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,309,516 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 348,951 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,057,946 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,386,784 |
| One Border Countries | 0 | - | 4.98 | 409,177 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,703 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 65,968 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 244,736 |
| Most Populous Countries with Exceptions | 0 | - | 4.97 | 108,858 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 89,847 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.93 | 68,855 |
| Countries by National Anthem | 0 | - | 4.95 | 61,804 |
| NATO Countries Quiz | 0 | - | 4.98 | 225,068 |
| EU Countries Quiz | 0 | - | 4.99 | 227,529 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,337 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,553 |
| Countries That Use the Euro | 0 | - | 4.92 | 62,607 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 225,594 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 217,159 |
| German-Speaking Countries | 0 | - | 4.88 | 117,435 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,917,901 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,780 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,098 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 383,890 |
