| Landlocked Countries | 0 | - | 4.99 | 418,380 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,300,525 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,697 |
| Himalayan Countries | 0 | - | 4.94 | 137,170 |
| Andean Countries | 0 | - | 4.95 | 83,794 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,041 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,441 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,728 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,267 |
| Danube Countries | 0 | - | 4.97 | 71,597 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,464 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,998 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,543 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,606 |
| European Landlocked Countries | 0 | - | 4.99 | 146,706 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,044 |
| Countries with the Most Species | 0 | - | 4.99 | 102,840 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,182 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,410 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,565 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,267 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,939 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,319 |
| Countries in the Alps | 0 | - | 4.87 | 117,603 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,080 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,268 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,373 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,925 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,032 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,404 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,212 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,138 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,935 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,509 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,448 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,308 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,882 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,156 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,172 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,074 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,024 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,541 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,445 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,111 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,101 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,955 |
| Largest Countries By Category | 0 | - | 4.97 | 157,550 |
| Countries by Countries | 0 | - | 4.96 | 62,791 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,137 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,147 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,461 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,277 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,753,846 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,539 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,464 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,850 |
| Island Countries | 0 | - | 4.99 | 709,545 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,530 |
| Northernmost Countries | 0 | - | 4.99 | 360,244 |
| Countries of South America | 0 | - | 5.00 | 922,295 |
| Countries of Oceania | 0 | - | 5.00 | 1,050,173 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,949 |
| "Land" Countries | 0 | - | 4.98 | 335,679 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,374,649 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,853 |
| Countries with Megacities | 0 | - | 4.99 | 254,770 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,712 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,896 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,005 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,884 |
| Countries by Official Language | 0 | - | 4.95 | 194,556 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,417 |
| Countries in their Native Language | 0 | - | 4.99 | 198,101 |
| Independence from Whom | 0 | - | 4.99 | 211,212 |
| Subdivisions by Country | 0 | - | 4.86 | 50,266 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,621 |
| Megadiverse Countries | 0 | - | 4.96 | 134,737 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,367 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,159 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,724 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,001 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,657 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,344 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,901 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,802 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,463 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,965 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,849 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,682 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,955 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,753 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,111 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,301 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,062 |
| World Map Quiz | 0 | - | 4.81 | 64,430 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,343 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,976 |
| Countries by Founding Story | 0 | - | 4.95 | 77,022 |
| Countries by Road Signs | 0 | - | 4.98 | 53,606 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,412 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,881 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,592 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,213 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,473 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,643 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,788 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,236 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,242 |
| Widest Countries East to West | 0 | - | 4.92 | 129,325 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,374 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,901 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,982 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,481 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,163 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,502 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,219 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,716 |
| Countries with Double Letters | 0 | - | 4.97 | 95,009 |
| Countries that End in N | 0 | - | 4.95 | 169,796 |
| Countries with Five Letters | 0 | - | 4.96 | 279,588 |
| Countries with Six Letters | 0 | - | 4.94 | 212,376 |
| Countries with W | 0 | - | 4.97 | 159,462 |
| Countries with Z | 0 | - | 4.98 | 289,709 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,665 |
| Countries That End in U | 0 | - | 4.95 | 120,379 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,682 |
| Countries that End in O | 0 | - | 4.92 | 159,166 |
| Countries that End in R | 0 | - | 4.87 | 118,713 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,489 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,231 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,058 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,051 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,637 |
| Countries That End in Y | 0 | - | 4.90 | 185,627 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,164 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,360 |
| Countries that End in I | 0 | - | 4.94 | 134,837 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,017 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,552 |
| Countries That End in NIA | 0 | - | 4.92 | 109,489 |
| Countries That End in BIA | 0 | - | 4.93 | 148,802 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,660 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,015 |
| Countries That End in RIA | 0 | - | 4.93 | 126,498 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,587 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,564 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,160 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,501 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,058 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,290 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,643 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,191 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,075 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,174 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,774 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,484 |
| Countries that End in L | 0 | - | 4.94 | 156,513 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,822 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,145 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,812 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,688 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,738 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,686 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,083 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,567 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,046 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,539 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,532 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,934 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,584 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,634 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,606 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,554 |
| One Border Countries | 0 | - | 4.98 | 467,430 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,820,857 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,612,818 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,490 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,302 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,622 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,236 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,311 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,871 |
| Countries by National Anthem | 0 | - | 4.93 | 71,169 |
| NATO Countries | 0 | - | 4.98 | 279,084 |
| EU Countries Quiz | 0 | - | 4.99 | 272,679 |
| Recently Independent Countries | 0 | - | 4.98 | 158,957 |
| French-Speaking Countries | 0 | - | 4.85 | 270,130 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,740 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,446 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,283 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,662 |
| German-Speaking Countries | 0 | - | 4.91 | 145,241 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,206 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,782 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,975 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,609 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,682 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,309 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,540 |
| Olympic Host Countries | 0 | - | 4.98 | 200,250 |
