| Countries of the World Quiz | 0 | - | 5.00 | 41,430,179 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 330,520 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,131,409 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,198,613 |
| Members of the Arab League | 0 | - | 4.85 | 64,819 |
| Sahara Desert Countries | 0 | - | 4.97 | 129,088 |
| Himalayan Countries | 0 | - | 4.95 | 107,038 |
| Andean Countries | 0 | - | 4.91 | 59,551 |
| Countries with the Oldest Median Age | 0 | - | 4.84 | 60,606 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 50,332 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 103,723 |
| Coffee Producing Countries | 0 | - | 4.82 | 54,578 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 53,891 |
| Danube Countries | 0 | - | 4.96 | 57,020 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 92,038 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 65,129 |
| Countries with the Best Passports | 0 | - | 4.87 | 72,135 |
| Countries with the Worst Passports | 0 | - | 4.88 | 50,005 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 110,290 |
| European Landlocked Countries | 0 | - | 4.99 | 136,637 |
| Partially Recognized Countries | 0 | - | 4.98 | 90,412 |
| Countries with the Most Species | 0 | - | 4.99 | 89,727 |
| Countries 197 to 205 | 0 | - | 4.87 | 56,919 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,900 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 44,194 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 48,749 |
| Countries that Use the Peso | 0 | - | 4.82 | 46,684 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.88 | 58,965 |
| Countries with a AAA Credit Rating | 0 | - | 4.87 | 49,591 |
| Countries in the Alps | 0 | - | 4.84 | 103,395 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 86,006 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 88,520 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 72,003 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 79,066 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 94,548 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 88,033 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 90,189 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 46,533 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,554 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 55,126 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 69,889 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,848 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,889 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 96,245 |
| Arctic Ocean Countries | 0 | - | 4.93 | 72,395 |
| Countries with the Most Grassland | 0 | - | 4.94 | 69,967 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 99,557 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,713 |
| Countries that Host the Most Refugees | 0 | - | 4.94 | 53,790 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 199,866 |
| World Countries - Blind Typing | 0 | - | 5.00 | 74,316 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,620 |
| Largest Countries By Category | 0 | - | 4.97 | 145,857 |
| Countries by Countries | 0 | - | 4.96 | 55,219 |
| Country Flags with the Most White | 0 | - | 4.90 | 125,519 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 59,013 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 79,030 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 343,280 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 359,706 |
| Island Countries Quiz | 0 | - | 4.99 | 665,413 |
| Biggest Countries by Area | 0 | - | 5.00 | 941,426 |
| Northernmost Countries | 0 | - | 4.99 | 329,548 |
| Countries of South America | 0 | - | 5.00 | 803,436 |
| Countries of Oceania | 0 | - | 5.00 | 905,489 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,595,661 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 127,799 |
| Countries with Megacities | 0 | - | 4.99 | 200,091 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 173,645 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.97 | 99,111 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 97,176 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 65,093 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 250,913 |
| Countries by Official Language | 0 | - | 4.96 | 174,339 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.92 | 251,516 |
| Countries in their Native Language | 0 | - | 4.98 | 179,513 |
| Independence from Whom | 0 | - | 4.99 | 187,784 |
| Subdivisions by Country | 0 | - | 4.82 | 46,722 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 114,746 |
| Megadiverse Countries | 0 | - | 4.96 | 126,222 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 92,642 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 107,204 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,659 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 132,450 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 49,567 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 78,933 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 145,737 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 77,430 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,702 |
| Countries by Sports League Revenue | 0 | - | 4.88 | 44,563 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 101,996 |
| Countries Furthest from the United States | 0 | - | 4.94 | 72,640 |
| Countries with the Highest HDI | 0 | - | 4.95 | 131,181 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 69,076 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 65,707 |
| Countries of the World in Alphabetical Order | 0 | - | 4.99 | 84,682 |
| World Map Quiz | 0 | - | 4.91 | 50,605 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 116,453 |
| Smallest Countries with at Least One Border | 0 | - | 4.89 | 82,234 |
| Southernmost Countries of the World | 0 | - | 4.99 | 208,707 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 92,013 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 109,257 |
| Countries With the Most Languages | 0 | - | 4.91 | 175,980 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.93 | 88,135 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.86 | 72,525 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 87,603 |
| Countries with the Most Domestic Camels | 0 | - | 4.93 | 54,653 |
| Tallest Countries North to South | 0 | - | 4.85 | 111,126 |
| Widest Countries East to West | 0 | - | 4.93 | 120,084 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 69,014 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 159,912 |
| Countries with the Longest Perimeter | 0 | - | 4.81 | 72,440 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 93,046 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 86,216 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 120,119 |
| Countries with the Most Desert | 0 | - | 4.92 | 105,821 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,658 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 32,273 |
| Countries with Double Letters | 0 | - | 4.96 | 70,185 |
| Countries that End in N | 0 | - | 4.94 | 134,410 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 231,754 |
| Countries with Six Letters Quiz | 0 | - | 4.94 | 189,120 |
| Countries with W | 0 | - | 4.96 | 124,309 |
| Countries with Z | 0 | - | 4.98 | 246,446 |
| Countries with Letters Missing | 0 | - | 4.97 | 168,558 |
| Countries That End in U | 0 | - | 4.95 | 108,422 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 90,977 |
| Countries that End in O | 0 | - | 4.92 | 147,949 |
| Countries that End in R | 0 | - | 4.84 | 96,903 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 147,707 |
| Countries Ending in "IA" | 0 | - | 4.99 | 172,881 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 157,031 |
| Countries by Last Two Letters | 0 | - | 4.90 | 117,218 |
| Countries by First and Last Letter #2 | 0 | - | 4.94 | 130,145 |
| Countries That End in Y | 0 | - | 4.90 | 162,053 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 162,192 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 121,838 |
| Countries that End in I | 0 | - | 4.92 | 114,908 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 150,729 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 89,015 |
| Countries That End in NIA | 0 | - | 4.93 | 101,436 |
| Countries That End in BIA | 0 | - | 4.91 | 126,835 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 154,431 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 110,474 |
| Countries That End in RIA | 0 | - | 4.90 | 101,537 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 101,196 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 203,177 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 120,849 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 111,914 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 78,523 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 93,322 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 97,566 |
| Countries that are Free from U.S.A. | 0 | - | 4.90 | 43,343 |
| Countries with the Word "And" | 0 | - | 4.98 | 84,410 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 41,756 |
| Countries that End in L | 0 | - | 4.95 | 135,340 |
| "Land" Countries | 0 | - | 4.98 | 291,421 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 190,561 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,318 |
| City to Country Quiz #1 | 0 | - | 4.94 | 134,913 |
| City to Country Quiz #3 | 0 | - | 4.87 | 100,722 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 72,221 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 209,977 |
| Five Poorest Countries by Continent | 0 | - | 4.95 | 169,103 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 117,279 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 134,148 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.93 | 195,381 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 141,740 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 66,319 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.84 | 102,882 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 82,902 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 57,019 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,321,621 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 351,862 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,096,176 |
| One Border Countries | 0 | - | 4.98 | 413,068 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,438,717 |
| Countries With One Word and Three A's | 0 | - | 4.87 | 31,459 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.94 | 66,901 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 247,018 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 109,927 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 103,933 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.94 | 71,542 |
| NATO Countries Quiz | 0 | - | 4.98 | 227,885 |
| EU Countries Quiz | 0 | - | 4.99 | 230,074 |
| Recently Independent Countries Quiz | 0 | - | 4.98 | 145,582 |
| Natural Features of Countries #1 | 0 | - | 4.85 | 78,187 |
| Countries That Use the Euro | 0 | - | 4.93 | 64,936 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 227,885 |
| Countries with Nuclear Weapons | 0 | - | 4.89 | 231,608 |
| German-Speaking Countries | 0 | - | 4.88 | 117,988 |
| Countries with Wild Tigers | 0 | - | 4.95 | 111,997 |
| Countries with Wild Penguins | 0 | - | 4.93 | 90,972 |
| Solve the Secret Country #1 | 0 | - | 4.95 | 132,959 |
| Top Five Countries by Religion | 0 | - | 4.90 | 144,471 |
| Solve the Secret Country #2 | 0 | - | 4.90 | 90,644 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 82,352 |
| Olympic Host Countries | 0 | - | 4.98 | 163,431 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 116,007 |
| Anagram Chain - Countries | 0 | - | 4.98 | 98,433 |
| 10 Easternmost Countries in Europe | 0 | - | 4.87 | 94,283 |
