| Landlocked Countries | 0 | - | 4.99 | 419,554 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,380,484 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,246 |
| Himalayan Countries | 0 | - | 4.95 | 137,694 |
| Andean Countries | 0 | - | 4.95 | 84,068 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,309 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,822 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,936 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,428 |
| Danube Countries | 0 | - | 4.97 | 71,726 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,647 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,120 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,761 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,839 |
| European Landlocked Countries | 0 | - | 4.99 | 146,847 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,211 |
| Countries with the Most Species | 0 | - | 4.99 | 102,987 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,372 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,451 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,611 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,353 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,029 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,420 |
| Countries in the Alps | 0 | - | 4.87 | 117,791 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,204 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,495 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,458 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,134 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,171 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,762 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,354 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,249 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,010 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,611 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,515 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,364 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,976 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,243 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,265 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,307 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,101 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,607 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,635 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,648 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,384 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,033 |
| Largest Countries By Category | 0 | - | 4.97 | 157,755 |
| Countries by Countries | 0 | - | 4.96 | 62,913 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,301 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,174 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,483 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,393 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,760,815 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,528 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,767 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,508 |
| Island Countries | 0 | - | 4.99 | 710,023 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,749 |
| Northernmost Countries | 0 | - | 4.99 | 360,770 |
| Countries of South America | 0 | - | 5.00 | 923,814 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,307 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,573 |
| "Land" Countries | 0 | - | 4.98 | 335,943 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,135 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,201 |
| Countries with Megacities | 0 | - | 4.99 | 262,054 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,054 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,090 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,354 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,130 |
| Countries by Official Language | 0 | - | 4.95 | 194,763 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,694 |
| Countries in their Native Language | 0 | - | 4.99 | 198,308 |
| Independence from Whom | 0 | - | 4.99 | 211,479 |
| Subdivisions by Country | 0 | - | 4.86 | 50,313 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,825 |
| Megadiverse Countries | 0 | - | 4.96 | 134,811 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,633 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,213 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,787 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,033 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,777 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,418 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,063 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,880 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,521 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,009 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,130 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,750 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,024 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,818 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,186 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,365 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,369 |
| World Map Quiz | 0 | - | 4.81 | 64,693 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,883 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,098 |
| Countries by Founding Story | 0 | - | 4.95 | 77,123 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,637 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,005 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,725 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,518 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,598 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,744 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,888 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,305 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,340 |
| Widest Countries East to West | 0 | - | 4.92 | 129,428 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,401 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,028 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,018 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,564 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,299 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,617 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,266 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,738 |
| Countries with Double Letters | 0 | - | 4.97 | 95,187 |
| Countries that End in N | 0 | - | 4.95 | 170,193 |
| Countries with Five Letters | 0 | - | 4.96 | 280,841 |
| Countries with Six Letters | 0 | - | 4.94 | 212,629 |
| Countries with W | 0 | - | 4.97 | 159,590 |
| Countries with Z | 0 | - | 4.98 | 290,062 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,832 |
| Countries That End in U | 0 | - | 4.95 | 120,446 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,850 |
| Countries that End in O | 0 | - | 4.92 | 159,232 |
| Countries that End in R | 0 | - | 4.87 | 118,757 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,537 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,445 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,190 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,135 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,734 |
| Countries That End in Y | 0 | - | 4.91 | 185,671 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,351 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,499 |
| Countries that End in I | 0 | - | 4.94 | 134,904 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,290 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,611 |
| Countries That End in NIA | 0 | - | 4.92 | 109,550 |
| Countries That End in BIA | 0 | - | 4.93 | 148,895 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,791 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,117 |
| Countries That End in RIA | 0 | - | 4.93 | 126,574 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,705 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,867 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,307 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,691 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,220 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,370 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,728 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,294 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,199 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,232 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,906 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,617 |
| Countries that End in L | 0 | - | 4.94 | 156,581 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,308 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,165 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,870 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,765 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,814 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,904 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,266 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,701 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,208 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,699 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,632 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,981 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,613 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,708 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,225 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,946 |
| One Border Countries | 0 | - | 4.98 | 468,010 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,824,970 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,618,241 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,616 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,558 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,761 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,323 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,445 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,995 |
| Countries by National Anthem | 0 | - | 4.92 | 71,202 |
| NATO Countries | 0 | - | 4.98 | 279,669 |
| EU Countries Quiz | 0 | - | 4.99 | 273,333 |
| Recently Independent Countries | 0 | - | 4.98 | 159,096 |
| French-Speaking Countries | 0 | - | 4.85 | 270,319 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,780 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,750 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,783 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,361 |
| German-Speaking Countries | 0 | - | 4.91 | 145,426 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,729 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,099 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 165,386 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,979 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 118,056 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,452 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,697 |
| Olympic Host Countries | 0 | - | 4.98 | 200,546 |
| Landlocked Countries in Africa | 0 | - | 4.99 | 46,726 |
