| Countries of the World Quiz | 0 | - | 5.00 | 40,978,169 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 324,349 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,076,597 |
| Members of the Arab League | 0 | - | 4.85 | 62,211 |
| Sahara Desert Countries | 0 | - | 4.97 | 127,138 |
| Himalayan Countries | 0 | - | 4.94 | 104,970 |
| Andean Countries | 0 | - | 4.91 | 58,223 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 59,187 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 49,412 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 102,774 |
| Coffee Producing Countries | 0 | - | 4.81 | 54,075 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,330 |
| Danube Countries | 0 | - | 4.97 | 56,657 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,703 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,858 |
| Countries with the Best Passports | 0 | - | 4.88 | 71,268 |
| Countries with the Worst Passports | 0 | - | 4.87 | 49,390 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 109,582 |
| European Landlocked Countries | 0 | - | 4.99 | 115,530 |
| Partially Recognized Countries | 0 | - | 4.98 | 89,404 |
| Countries with the Most Species | 0 | - | 4.99 | 89,534 |
| Countries 197 to 205 | 0 | - | 4.88 | 56,384 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,687 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,019 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,305 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,430 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,713 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 49,168 |
| Countries in the Alps | 0 | - | 4.84 | 102,697 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 85,342 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 87,220 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,605 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 78,289 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,999 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,584 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,653 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,163 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,330 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,675 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,453 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,605 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,681 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,516 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,994 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,497 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 98,137 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,357 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,408 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 196,484 |
| World Countries - Blind Typing | 0 | - | 5.00 | 72,975 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,297 |
| Largest Countries By Category | 0 | - | 4.96 | 144,956 |
| Countries by Countries | 0 | - | 4.96 | 54,669 |
| Country Flags with the Most White | 0 | - | 4.90 | 124,522 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,722 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 78,248 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 341,298 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 355,796 |
| Island Countries Quiz | 0 | - | 4.99 | 660,919 |
| Biggest Countries by Area | 0 | - | 5.00 | 933,823 |
| Northernmost Countries | 0 | - | 4.99 | 327,356 |
| Countries of South America | 0 | - | 5.00 | 794,201 |
| Countries of Oceania | 0 | - | 5.00 | 894,623 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,156,486 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,574,768 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 126,069 |
| Countries with Megacities | 0 | - | 4.99 | 197,510 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 171,762 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 98,080 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 95,573 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 64,025 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 248,202 |
| Countries by Official Language | 0 | - | 4.96 | 172,734 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 249,439 |
| Countries in their Native Language | 0 | - | 4.98 | 178,419 |
| Independence from Whom | 0 | - | 4.99 | 185,748 |
| Subdivisions by Country | 0 | - | 4.82 | 46,455 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 113,548 |
| Megadiverse Countries | 0 | - | 4.96 | 125,359 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 91,516 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 106,718 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.83 | 47,392 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 131,640 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,167 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,968 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,154 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,068 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,359 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 43,874 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,625 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,034 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,972 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,567 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,299 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 82,418 |
| World Map Quiz | 0 | - | 4.90 | 49,485 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 81,547 |
| Southernmost Countries of the World | 0 | - | 4.99 | 206,940 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 91,027 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 108,136 |
| Countries With the Most Languages | 0 | - | 4.91 | 173,857 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 87,387 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 71,682 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 86,388 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 54,022 |
| Tallest Countries North to South | 0 | - | 4.84 | 110,503 |
| Widest Countries East to West | 0 | - | 4.93 | 119,435 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,836 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,096 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,694 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 85,642 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 119,420 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,242 |
| Countries by Contribution to UN Budget | 0 | - | 4.86 | 66,478 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.82 | 32,071 |
| Countries with Double Letters | 0 | - | 4.96 | 68,546 |
| Countries that End in N | 0 | - | 4.93 | 132,869 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 229,943 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 187,222 |
| Countries with W | 0 | - | 4.97 | 122,832 |
| Countries with Z | 0 | - | 4.98 | 244,612 |
| Countries with Letters Missing | 0 | - | 4.97 | 166,854 |
| Countries That End in U | 0 | - | 4.95 | 107,623 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 89,644 |
| Countries that End in O | 0 | - | 4.92 | 146,996 |
| Countries that End in R | 0 | - | 4.85 | 96,517 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,288 |
| Countries Ending in "IA" | 0 | - | 4.99 | 171,531 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,880 |
| Countries by Last Two Letters | 0 | - | 4.91 | 116,285 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 129,365 |
| Countries That End in Y | 0 | - | 4.90 | 161,676 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 161,132 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 120,858 |
| Countries that End in I | 0 | - | 4.92 | 114,533 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 149,661 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 88,343 |
| Countries That End in NIA | 0 | - | 4.93 | 100,911 |
| Countries That End in BIA | 0 | - | 4.91 | 126,179 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 153,342 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,834 |
| Countries That End in RIA | 0 | - | 4.90 | 101,037 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 100,530 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 201,013 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 119,825 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 110,718 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 77,526 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 92,318 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,804 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 42,886 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 40,850 |
| Countries that End in L | 0 | - | 4.95 | 134,355 |
| "Land" Countries | 0 | - | 4.98 | 289,345 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 188,976 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.97 | 65,193 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,351 |
| City to Country Quiz #3 | 0 | - | 4.86 | 100,235 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,675 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 208,059 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 166,563 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 116,551 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 133,177 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 194,037 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,960 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,931 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 92,113 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,373 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 56,113 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,312,366 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 349,819 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,067,203 |
| One Border Countries | 0 | - | 4.98 | 410,419 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,398,361 |
| Countries With One Word and Three A's | 0 | - | 4.85 | 30,885 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,189 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 245,206 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,136 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 90,020 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 69,956 |
| Countries by National Anthem | 0 | - | 4.95 | 61,858 |
| NATO Countries Quiz | 0 | - | 4.98 | 225,661 |
| EU Countries Quiz | 0 | - | 4.99 | 228,112 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 144,782 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 77,646 |
| Countries That Use the Euro | 0 | - | 4.92 | 63,249 |
| Countries with the Most Military Troops | 0 | - | 4.94 | 226,060 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 217,566 |
| German-Speaking Countries | 0 | - | 4.88 | 117,587 |
| Countries with Wild Tigers | 0 | - | 4.95 | 110,963 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,241 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 130,306 |
| Top Five Countries by Religion | 0 | - | 4.90 | 142,174 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 88,464 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 81,662 |
| Olympic Host Countries | 0 | - | 4.98 | 161,954 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 98,994 |
| Anagram Chain - Countries | 0 | - | 4.98 | 96,848 |
| 10 Easternmost Countries in Europe | 0 | - | 4.85 | 92,484 |
| Countries with the Most Elite Universities | 0 | - | 4.95 | 124,510 |
| Ten Highest Ranking FIFA Countries by Year | 0 | - | 4.95 | 233,722 |
