| Landlocked Countries | 0 | - | 4.99 | 426,002 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,888,160 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,345 |
| Himalayan Countries | 0 | - | 4.93 | 140,304 |
| Andean Countries | 0 | - | 4.94 | 85,498 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,642 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,045 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,215 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,460 |
| Danube Countries | 0 | - | 4.97 | 72,417 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,611 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,853 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,154 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,638 |
| European Landlocked Countries | 0 | - | 4.99 | 147,619 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,323 |
| Countries with the Most Species | 0 | - | 4.99 | 103,573 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,429 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,781 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,891 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,849 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,588 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,028 |
| Countries in the Alps | 0 | - | 4.87 | 118,795 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,668 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,895 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,971 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,036 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,973 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,273 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,421 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,873 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,435 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,191 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,889 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,752 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,568 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,811 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,903 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,879 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,626 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 73,709 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,688 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,771 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,187 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,518 |
| Largest Countries By Category | 0 | - | 4.97 | 158,883 |
| Countries by Countries | 0 | - | 4.96 | 63,657 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,282 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,403 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,676 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,115 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,805,134 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,520 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,723 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,758 |
| Island Countries | 0 | - | 4.99 | 712,612 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,877 |
| Northernmost Countries | 0 | - | 4.99 | 364,073 |
| Countries of South America | 0 | - | 5.00 | 932,867 |
| Countries of Oceania | 0 | - | 5.00 | 1,063,576 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,889,662 |
| "Land" Countries | 0 | - | 4.98 | 338,420 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,394,020 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,194 |
| Countries with Megacities | 0 | - | 4.99 | 267,181 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,877 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,153 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,192 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,260 |
| Countries by Official Language | 0 | - | 4.95 | 196,021 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,664 |
| Countries in their Native Language | 0 | - | 4.99 | 199,752 |
| Independence from Whom | 0 | - | 4.99 | 213,101 |
| Subdivisions by Country | 0 | - | 4.87 | 50,620 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,459 |
| Megadiverse Countries | 0 | - | 4.96 | 135,287 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,963 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,546 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,694 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,232 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,275 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,860 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,128 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,573 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,068 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,260 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,563 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,384 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,449 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,152 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,589 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,876 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,393 |
| World Map Quiz | 0 | - | 4.81 | 65,749 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,325 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,720 |
| Countries by Founding Story | 0 | - | 4.95 | 77,809 |
| Countries by Road Signs | 0 | - | 4.98 | 54,357 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,285 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,102 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,572 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,614 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,445 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,550 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,746 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,703 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,747 |
| Widest Countries East to West | 0 | - | 4.92 | 130,472 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,602 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,274 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,524 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,071 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,989 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,496 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,507 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,896 |
| Countries with Double Letters | 0 | - | 4.96 | 97,107 |
| Countries that End in N | 0 | - | 4.95 | 171,979 |
| Countries with Five Letters | 0 | - | 4.96 | 283,817 |
| Countries with Six Letters | 0 | - | 4.94 | 214,510 |
| Countries with W | 0 | - | 4.96 | 160,972 |
| Countries with Z | 0 | - | 4.98 | 292,488 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,302 |
| Countries That End in U | 0 | - | 4.95 | 121,200 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,129 |
| Countries that End in O | 0 | - | 4.92 | 160,225 |
| Countries that End in R | 0 | - | 4.87 | 119,191 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,948 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,872 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,171 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,845 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,773 |
| Countries That End in Y | 0 | - | 4.91 | 186,095 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,481 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,289 |
| Countries that End in I | 0 | - | 4.94 | 135,324 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,646 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,064 |
| Countries That End in NIA | 0 | - | 4.92 | 110,072 |
| Countries That End in BIA | 0 | - | 4.93 | 149,586 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,559 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,781 |
| Countries That End in RIA | 0 | - | 4.93 | 127,067 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,399 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,611 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,197 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,637 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,196 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,814 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,339 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,542 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,922 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,658 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,742 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,436 |
| Countries that End in L | 0 | - | 4.94 | 157,138 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,085 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,350 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,526 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,014 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,461 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,464 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,152 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,440 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,279 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,995 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,223 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,246 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,836 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,250 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,454,302 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,538 |
| One Border Countries | 0 | - | 4.98 | 472,011 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,698 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,849,256 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,653,664 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,335 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,064 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,678 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,910 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,222 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,626 |
| Countries by National Anthem | 0 | - | 4.92 | 71,412 |
| NATO Countries | 0 | - | 4.98 | 283,494 |
| EU Countries Quiz | 0 | - | 4.99 | 277,989 |
| Recently Independent Countries | 0 | - | 4.98 | 160,364 |
| French-Speaking Countries | 0 | - | 4.85 | 271,697 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,047 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,829 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,442 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,043 |
| German-Speaking Countries | 0 | - | 4.92 | 146,030 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,435 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,577 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,259 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,422 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,481 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,824 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,105 |
