| Countries of the World Quiz | 0 | - | 5.00 | 41,840,030 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 335,335 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,182,187 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,235,700 |
| Which Country Does Not Border... | 0 | - | 4.81 | 87,184 |
| Members of the Arab League | 0 | - | 4.86 | 66,628 |
| Sahara Desert Countries | 0 | - | 4.97 | 130,780 |
| Himalayan Countries | 0 | - | 4.94 | 108,718 |
| Andean Countries | 0 | - | 4.91 | 60,396 |
| Countries with the Oldest Median Age | 0 | - | 4.82 | 61,582 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,986 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 104,624 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,926 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 54,369 |
| Danube Countries | 0 | - | 4.96 | 57,289 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,289 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,345 |
| Countries with the Best Passports | 0 | - | 4.86 | 72,846 |
| Countries with the Worst Passports | 0 | - | 4.89 | 50,519 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 111,183 |
| European Landlocked Countries | 0 | - | 4.99 | 137,294 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,935 |
| Countries with the Most Species | 0 | - | 4.99 | 90,094 |
| Countries 197 to 205 | 0 | - | 4.87 | 57,463 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 45,064 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,356 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 49,149 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,935 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 59,170 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 50,007 |
| Countries in the Alps | 0 | - | 4.84 | 103,991 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,565 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 89,795 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,373 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,481 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 95,000 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,429 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,836 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,751 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,494 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 70,252 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 49,080 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 37,068 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,671 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,759 |
| Countries with the Most Grassland | 0 | - | 4.94 | 70,330 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 100,834 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 62,030 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 54,126 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 203,288 |
| World Countries - Blind Typing | 0 | - | 5.00 | 75,707 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,896 |
| Largest Countries By Category | 0 | - | 4.97 | 146,582 |
| Countries by Countries | 0 | - | 4.95 | 55,708 |
| Country Flags with the Most White | 0 | - | 4.91 | 126,699 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,265 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 45,181 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,775 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 345,522 |
| Countries with the Most Tourists Quiz | 0 | - | 4.91 | 363,324 |
| Island Countries Quiz | 0 | - | 4.99 | 669,426 |
| Biggest Countries by Area | 0 | - | 5.00 | 948,943 |
| Northernmost Countries | 0 | - | 4.99 | 331,211 |
| Countries of South America | 0 | - | 5.00 | 811,596 |
| Countries of Oceania | 0 | - | 5.00 | 915,541 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,615,006 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 129,314 |
| Countries with Megacities | 0 | - | 4.99 | 202,209 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 175,677 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 100,123 |
| Countries With More than 200 Million People | 0 | - | 4.94 | 98,472 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 66,066 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 253,530 |
| Countries by Official Language | 0 | - | 4.96 | 175,452 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 253,880 |
| Countries in their Native Language | 0 | - | 4.98 | 180,811 |
| Independence from Whom | 0 | - | 4.99 | 189,686 |
| Subdivisions by Country | 0 | - | 4.85 | 46,944 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 115,857 |
| Megadiverse Countries | 0 | - | 4.96 | 126,896 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 94,116 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,679 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,865 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 133,488 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,967 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 79,800 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 146,103 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,780 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,884 |
| Countries by Sports League Revenue | 0 | - | 4.89 | 45,219 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 102,332 |
| Countries Furthest from the United States | 0 | - | 4.94 | 73,021 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,566 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,458 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 66,091 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 86,944 |
| World Map Quiz | 0 | - | 4.90 | 51,646 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 119,011 |
| Smallest Countries with at Least One Border | 0 | - | 4.90 | 82,838 |
| Countries by Founding Story | 0 | - | 4.93 | 56,003 |
| Countries by Road Signs | 0 | - | 4.98 | 46,382 |
| Southernmost Countries of the World | 0 | - | 4.99 | 209,985 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,958 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 110,336 |
| Countries With the Most Languages | 0 | - | 4.90 | 178,095 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,782 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 73,197 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 88,427 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 55,195 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,692 |
| Widest Countries East to West | 0 | - | 4.93 | 120,660 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,146 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 160,706 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,907 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,472 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,952 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,762 |
| Countries with the Most Desert | 0 | - | 4.92 | 106,601 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,824 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,444 |
| Countries with Double Letters | 0 | - | 4.96 | 72,495 |
| Countries that End in N | 0 | - | 4.94 | 136,736 |
| Countries with Five Letters Quiz | 0 | - | 4.97 | 234,533 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 191,102 |
| Countries with W | 0 | - | 4.96 | 126,196 |
| Countries with Z | 0 | - | 4.98 | 265,216 |
| Countries with Letters Missing | 0 | - | 4.97 | 170,057 |
| Countries That End in U | 0 | - | 4.95 | 109,773 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 92,861 |
| Countries that End in O | 0 | - | 4.92 | 148,906 |
| Countries that End in R | 0 | - | 4.85 | 97,490 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 148,433 |
| Countries Ending in "IA" | 0 | - | 4.99 | 174,514 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,909 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,845 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 130,778 |
| Countries That End in Y | 0 | - | 4.92 | 177,343 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 163,183 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 122,709 |
| Countries that End in I | 0 | - | 4.92 | 115,307 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 151,807 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,487 |
| Countries That End in NIA | 0 | - | 4.92 | 101,926 |
| Countries That End in BIA | 0 | - | 4.91 | 127,451 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 155,323 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 111,091 |
| Countries That End in RIA | 0 | - | 4.90 | 102,002 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 101,903 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 205,092 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 121,848 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 112,993 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 79,512 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 40,182 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,949 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 98,297 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,786 |
| Countries with the Word "And" | 0 | - | 4.98 | 85,216 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 42,657 |
| Countries that End in L | 0 | - | 4.95 | 135,990 |
| "Land" Countries | 0 | - | 4.98 | 292,561 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 191,434 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 82,941 |
| City to Country Quiz #1 | 0 | - | 4.95 | 135,465 |
| City to Country Quiz #3 | 0 | - | 4.87 | 101,141 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 72,721 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 211,324 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 171,186 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,940 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 135,050 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 196,616 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 142,689 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,671 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 103,399 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 83,341 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,459 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,330,472 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 353,722 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,122,052 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,476,192 |
| One Border Countries | 0 | - | 4.98 | 416,229 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 67,583 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 248,615 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 110,716 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 104,347 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 72,417 |
| Countries by Population Range - Tile Select | 0 | - | 4.84 | 51,432 |
| Majority Muslim Countries | 0 | - | 4.97 | 317,940 |
| Countries by National Anthem | 0 | - | 4.95 | 68,743 |
| NATO Countries Quiz | 0 | - | 4.98 | 242,990 |
| EU Countries Quiz | 0 | - | 4.99 | 231,754 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 146,632 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,582 |
| Countries That Use the Euro | 0 | - | 4.93 | 66,494 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 229,678 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 235,271 |
| German-Speaking Countries | 0 | - | 4.88 | 118,365 |
| Word Scramble - Countries | 0 | - | 4.87 | 1,951,128 |
| Countries with Wild Tigers | 0 | - | 4.95 | 112,506 |
| Countries with Wild Penguins | 0 | - | 4.93 | 91,419 |
