| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 80,474 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 111,064 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.85 | 50,966 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,039,682 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,362,863 |
| Landlocked Countries Quiz | 0 | - | 4.99 | 318,342 |
| Countries of the World Quiz | 0 | - | 5.00 | 40,533,320 |
| Countries of the World in 1900 | 0 | - | 4.88 | 65,203 |
| Countries of the World in 1914 with a Map | 0 | - | 4.99 | 169,029 |
| All Countries by Northernmost Point on Land | 0 | - | 4.91 | 105,386 |
| 20 Countries on an Empty Map #1 | 0 | - | 4.94 | 53,613 |
| Countries of the World in 1945 with a Map | 0 | - | 5.00 | 126,509 |
| Countries on the Equator | 0 | - | 4.83 | 133,031 |
| Members of the Arab League | 0 | - | 4.82 | 59,610 |
| Sahara Desert Countries | 0 | - | 4.97 | 125,358 |
| Himalayan Countries | 0 | - | 4.95 | 102,729 |
| Andean Countries | 0 | - | 4.90 | 57,088 |
| Countries with the Oldest Median Age | 0 | - | 4.85 | 57,936 |
| Countries with the Youngest Median Age | 0 | - | 4.98 | 48,640 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 101,984 |
| Coffee Producing Countries | 0 | - | 4.82 | 53,613 |
| Countries with Shrinking Populations | 0 | - | 4.93 | 52,808 |
| Danube Countries | 0 | - | 4.97 | 56,394 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 91,435 |
| Countries With an "Ese" Demonym | 0 | - | 4.96 | 64,629 |
| Countries with the Best Passports | 0 | - | 4.87 | 70,471 |
| Countries with the Worst Passports | 0 | - | 4.87 | 48,874 |
| Countries with the Most Immigrants | 0 | - | 4.87 | 108,488 |
| European Landlocked Countries | 0 | - | 4.99 | 114,885 |
| Partially Recognized Countries | 0 | - | 4.98 | 88,839 |
| Countries with the Most Species | 0 | - | 4.99 | 89,111 |
| Countries 197 to 205 | 0 | - | 4.88 | 55,915 |
| Tropic of Cancer Countries | 0 | - | 4.96 | 44,477 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 43,842 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 47,826 |
| Countries that Use the Peso | 0 | - | 4.81 | 46,155 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.87 | 58,492 |
| Countries with a AAA Credit Rating | 0 | - | 4.89 | 48,747 |
| Countries in the Alps | 0 | - | 4.83 | 101,950 |
| Top Five Importing Partners by Country | 0 | - | 4.98 | 84,755 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 85,975 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 71,180 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 77,802 |
| Northernmost Countries by Continent | 0 | - | 4.97 | 93,443 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 87,136 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 89,132 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 45,810 |
| Biggest Country by Body of Water | 0 | - | 4.96 | 45,098 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 54,230 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.88 | 68,973 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 48,365 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 36,445 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 95,045 |
| Arctic Ocean Countries | 0 | - | 4.93 | 71,556 |
| Countries with the Most Grassland | 0 | - | 4.93 | 69,048 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 96,797 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 61,002 |
| Countries that Host the Most Refugees | 0 | - | 4.93 | 53,011 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 193,278 |
| World Countries - Blind Typing | 0 | - | 5.00 | 71,606 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 42,006 |
| Largest Countries By Category | 0 | - | 4.96 | 144,027 |
| Countries by Countries | 0 | - | 4.96 | 54,177 |
| Country Flags with the Most White | 0 | - | 4.90 | 107,818 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 58,426 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.86 | 44,476 |
| All Countries by Population With a Map | 0 | - | 4.98 | 60,876 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 76,086 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 77,480 |
| Pixelated World Map | 0 | - | 5.00 | 127,097 |
| Countries of Europe in 1444 | 0 | - | 4.92 | 86,198 |
| Countries of the World in 1444 | 0 | - | 4.98 | 49,365 |
| Countries of the World with a Borderless Map | 0 | - | 4.99 | 68,789 |
| Spanish-Speaking Countries | 0 | - | 4.94 | 338,902 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 352,296 |
| Island Countries Quiz | 0 | - | 4.99 | 639,368 |
| Biggest Countries by Area | 0 | - | 5.00 | 926,007 |
| Northernmost Countries | 0 | - | 4.99 | 325,579 |
| Countries of South America | 0 | - | 5.00 | 784,942 |
| Countries of Oceania | 0 | - | 5.00 | 883,695 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,115,076 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,554,821 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 124,391 |
| Countries with Megacities | 0 | - | 4.99 | 195,087 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 169,742 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 97,006 |
| Countries With More than 200 Million People | 0 | - | 4.93 | 93,891 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.97 | 62,860 |
| Top 50 Countries by Population - In Order | 0 | - | 4.97 | 245,495 |
| Global Cities on a World Map | 0 | - | 4.93 | 90,799 |
| Countries by Official Language | 0 | - | 4.95 | 153,655 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 247,103 |
| Countries in their Native Language | 0 | - | 4.98 | 177,167 |
| Independence from Whom | 0 | - | 4.99 | 183,975 |
| Subdivisions by Country | 0 | - | 4.82 | 46,229 |
| Who Controlled These Colonies? | 0 | - | 4.89 | 112,427 |
| Megadiverse Countries | 0 | - | 4.96 | 124,841 |
| Countries With the Most English Speakers | 0 | - | 4.87 | 90,135 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 106,087 |
| Most Desired Destinations for Potential Migrants | 0 | - | 4.82 | 47,157 |
| 15 Biggest Island Countries | 0 | - | 4.99 | 130,209 |
| Most Recently-Settled Countries | 0 | - | 4.92 | 48,798 |
| Countries of the World in 1938 Quiz | 0 | - | 4.96 | 77,006 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.95 | 144,392 |
| Countries with Multiple Populous Islands | 0 | - | 4.91 | 76,574 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 41,034 |
| Countries by Sports League Revenue | 0 | - | 4.87 | 43,104 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 100,882 |
| Countries Furthest from the United States | 0 | - | 4.94 | 71,435 |
| Countries with the Highest HDI | 0 | - | 4.95 | 130,531 |
| Straight Shot to the Arctic Circle | 0 | - | 4.92 | 68,006 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 64,822 |
| Mediterranean Countries with an Empty Map | 0 | - | 4.99 | 84,526 |
| World Map Quiz | 0 | - | 4.90 | 48,275 |
| Smallest Countries with at Least One Border | 0 | - | 4.91 | 80,857 |
| Countries by Founding Story | 0 | - | 4.92 | 54,380 |
| Countries by Road Signs | 0 | - | 4.98 | 44,786 |
| Southernmost Countries of the World | 0 | - | 4.99 | 205,530 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 90,242 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.90 | 107,203 |
| Countries With the Most Languages | 0 | - | 4.90 | 171,889 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.92 | 86,652 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.85 | 70,969 |
| Countries with the Most Prisoners | 0 | - | 4.93 | 85,610 |
| Countries with the Most Domestic Camels | 0 | - | 4.92 | 53,396 |
| Tallest Countries North to South | 0 | - | 4.84 | 109,929 |
| Widest Countries East to West | 0 | - | 4.93 | 118,815 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 68,706 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 158,019 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 92,148 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.96 | 84,888 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 118,211 |
| Countries with the Most Desert | 0 | - | 4.92 | 104,623 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 66,292 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 31,887 |
| Countries with Double Letters | 0 | - | 4.96 | 67,205 |
| Countries that End in N | 0 | - | 4.94 | 131,654 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 228,355 |
| Countries with Six Letters Quiz | 0 | - | 4.95 | 185,915 |
| Countries with W | 0 | - | 4.97 | 121,896 |
| Countries with Z | 0 | - | 4.98 | 243,055 |
| Countries with Letters Missing | 0 | - | 4.97 | 154,792 |
| Countries That End in U | 0 | - | 4.94 | 107,111 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 88,522 |
| Countries that End in O | 0 | - | 4.92 | 146,510 |
| Countries that End in R | 0 | - | 4.86 | 96,198 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 146,946 |
| Countries Ending in "IA" | 0 | - | 4.99 | 170,168 |
| Countries by First and Last Letter #1 | 0 | - | 4.98 | 155,020 |
| Countries by Last Two Letters | 0 | - | 4.90 | 115,693 |
| Countries by First and Last Letter #2 | 0 | - | 4.95 | 128,633 |
| Countries That End in Y | 0 | - | 4.90 | 160,932 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 159,812 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.91 | 119,967 |
| Countries that End in I | 0 | - | 4.92 | 114,217 |
| Countries Based on First Two Letters #2 | 0 | - | 4.98 | 148,599 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 87,897 |
| Countries That End in NIA | 0 | - | 4.93 | 100,403 |
| Countries That End in BIA | 0 | - | 4.91 | 125,464 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.93 | 152,515 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 109,152 |
| Countries That End in RIA | 0 | - | 4.89 | 100,538 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 99,855 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 199,028 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 118,813 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 109,628 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 4.99 | 76,530 |
| Countries with a Unique Last Letter | 0 | - | 4.91 | 91,648 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 96,054 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 42,453 |
| Countries with the Word "And" | 0 | - | 4.98 | 82,706 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 39,929 |
| Countries that End in L | 0 | - | 4.95 | 133,477 |
| "Land" Countries | 0 | - | 4.98 | 288,092 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 187,939 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.96 | 65,090 |
| City to Country Quiz #1 | 0 | - | 4.94 | 133,850 |
| City to Country Quiz #3 | 0 | - | 4.86 | 99,825 |
| 45 European Countries, 45 Cities | 0 | - | 4.94 | 71,181 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 206,496 |
| Five Poorest Countries by Continent | 0 | - | 4.94 | 161,042 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 115,815 |
| Five Smallest Countries by Continent | 0 | - | 4.97 | 131,789 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.92 | 192,243 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 140,104 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 65,510 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.83 | 91,724 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 81,953 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.93 | 55,650 |
| All First-Level Subdivisions of Europe by Proximity | 0 | - | 4.82 | 65,358 |
| Top World Languages on a Map | 0 | - | 4.91 | 92,497 |
| Official Languages of the World on the Disappearing World Map | 0 | - | 4.99 | 97,279 |
| Historic Journeys on a World Map | 0 | - | 4.99 | 39,402 |
| Biggest Countries by Population | 0 | - | 4.99 | 1,303,681 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 347,801 |
| One Border Countries | 0 | - | 4.98 | 407,035 |
| Countries of Europe in 1000 with a Map | 0 | - | 4.79 | 35,645 |
| Every Country in its Official/Native Language | 0 | - | 4.96 | 16,949 |
| Countries With One Word and Three A's | 0 | - | 4.84 | 30,302 |
| 407 Islands on the World Map | 0 | - | 4.98 | 27,531 |
