| Landlocked Countries | 0 | - | 4.99 | 419,606 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,384,449 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,271 |
| Himalayan Countries | 0 | - | 4.95 | 137,712 |
| Andean Countries | 0 | - | 4.95 | 84,075 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,316 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,835 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,942 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,431 |
| Danube Countries | 0 | - | 4.97 | 71,728 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,651 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,124 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,768 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,845 |
| European Landlocked Countries | 0 | - | 4.99 | 146,851 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,219 |
| Countries with the Most Species | 0 | - | 4.99 | 102,991 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,382 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,452 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,613 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,358 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,033 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,427 |
| Countries in the Alps | 0 | - | 4.87 | 117,799 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,208 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,509 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,460 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,177 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,181 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,767 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,363 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,254 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,013 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,616 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,519 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,367 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,982 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,248 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,269 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,321 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,104 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,614 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,638 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,677 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,411 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,034 |
| Largest Countries By Category | 0 | - | 4.97 | 157,768 |
| Countries by Countries | 0 | - | 4.96 | 62,916 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,315 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,177 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,485 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,397 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,761,168 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,566 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,778 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,565 |
| Island Countries | 0 | - | 4.99 | 710,044 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,793 |
| Northernmost Countries | 0 | - | 4.99 | 360,797 |
| Countries of South America | 0 | - | 5.00 | 923,883 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,429 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,717 |
| "Land" Countries | 0 | - | 4.98 | 335,956 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,240 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,219 |
| Countries with Megacities | 0 | - | 4.99 | 262,166 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,063 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,099 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,364 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,135 |
| Countries by Official Language | 0 | - | 4.95 | 194,769 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,705 |
| Countries in their Native Language | 0 | - | 4.99 | 198,316 |
| Independence from Whom | 0 | - | 4.99 | 211,487 |
| Subdivisions by Country | 0 | - | 4.86 | 50,316 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,834 |
| Megadiverse Countries | 0 | - | 4.96 | 134,814 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,644 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,214 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,789 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,034 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,790 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,419 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,065 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,883 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,522 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,011 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,142 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,752 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,026 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,822 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,189 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,366 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,381 |
| World Map Quiz | 0 | - | 4.81 | 64,702 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,902 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,104 |
| Countries by Founding Story | 0 | - | 4.95 | 77,126 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,640 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,008 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,733 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,538 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,601 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,748 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,890 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,307 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,344 |
| Widest Countries East to West | 0 | - | 4.92 | 129,434 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,402 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,039 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,021 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,570 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,307 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,622 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,270 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,739 |
| Countries with Double Letters | 0 | - | 4.97 | 95,205 |
| Countries that End in N | 0 | - | 4.95 | 170,209 |
| Countries with Five Letters | 0 | - | 4.96 | 280,873 |
| Countries with Six Letters | 0 | - | 4.94 | 212,646 |
| Countries with W | 0 | - | 4.97 | 159,596 |
| Countries with Z | 0 | - | 4.98 | 290,145 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,841 |
| Countries That End in U | 0 | - | 4.95 | 120,449 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,860 |
| Countries that End in O | 0 | - | 4.92 | 159,238 |
| Countries that End in R | 0 | - | 4.87 | 118,761 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,538 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,453 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,199 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,142 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,739 |
| Countries That End in Y | 0 | - | 4.91 | 185,673 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,369 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,505 |
| Countries that End in I | 0 | - | 4.94 | 134,905 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,356 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,614 |
| Countries That End in NIA | 0 | - | 4.92 | 109,555 |
| Countries That End in BIA | 0 | - | 4.93 | 148,903 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,800 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,124 |
| Countries That End in RIA | 0 | - | 4.93 | 126,581 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,713 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,888 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,320 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,697 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,225 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,374 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,731 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,303 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,211 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,233 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,907 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,627 |
| Countries that End in L | 0 | - | 4.94 | 156,585 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,341 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,165 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,872 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,770 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,815 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,914 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,275 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,709 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,213 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,706 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,635 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,983 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,614 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,710 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,305 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,972 |
| One Border Countries | 0 | - | 4.98 | 468,037 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,825,211 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,618,481 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,623 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,571 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,767 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,329 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,449 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,001 |
| Countries by National Anthem | 0 | - | 4.92 | 71,202 |
| NATO Countries | 0 | - | 4.98 | 279,702 |
| EU Countries Quiz | 0 | - | 4.99 | 273,383 |
| Recently Independent Countries | 0 | - | 4.98 | 159,108 |
| French-Speaking Countries | 0 | - | 4.85 | 270,326 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,782 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,765 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,810 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,402 |
| German-Speaking Countries | 0 | - | 4.91 | 145,430 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,735 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,103 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,408 |
| Top Five Countries by Religion | 0 | - | 4.93 | 171,013 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,075 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,462 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,708 |
| Olympic Host Countries | 0 | - | 4.98 | 200,557 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,734 |
