| Landlocked Countries | 0 | - | 4.99 | 425,120 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,837,651 |
| Countries by National Anthem | 0 | - | 4.92 | 71,398 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,946 |
| Himalayan Countries | 0 | - | 4.93 | 139,995 |
| Andean Countries | 0 | - | 4.94 | 85,303 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,463 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,814 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,032 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,323 |
| Danube Countries | 0 | - | 4.97 | 72,317 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,486 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,760 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,985 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,481 |
| European Landlocked Countries | 0 | - | 4.99 | 147,536 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,196 |
| Countries with the Most Species | 0 | - | 4.99 | 103,520 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,325 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,744 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,854 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,790 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,525 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,959 |
| Countries in the Alps | 0 | - | 4.87 | 118,688 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,489 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,747 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,920 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,966 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,883 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,191 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,322 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,811 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,375 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,124 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,821 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,696 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,504 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,736 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,832 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,691 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,563 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,698 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,597 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,468 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,002 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,475 |
| Largest Countries By Category | 0 | - | 4.97 | 158,772 |
| Countries by Countries | 0 | - | 4.96 | 63,581 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,187 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,380 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,653 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,042 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,800,765 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,972 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,501 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,384 |
| Island Countries | 0 | - | 4.99 | 712,333 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,054,117 |
| Northernmost Countries | 0 | - | 4.99 | 363,731 |
| Countries of South America | 0 | - | 5.00 | 931,845 |
| Countries of Oceania | 0 | - | 5.00 | 1,062,368 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,887,430 |
| "Land" Countries | 0 | - | 4.98 | 338,266 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,392,390 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,000 |
| Countries with Megacities | 0 | - | 4.99 | 266,821 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,711 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,028 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,026 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,151 |
| Countries by Official Language | 0 | - | 4.95 | 195,894 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,494 |
| Countries in their Native Language | 0 | - | 4.99 | 199,655 |
| Independence from Whom | 0 | - | 4.99 | 212,947 |
| Subdivisions by Country | 0 | - | 4.87 | 50,591 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,350 |
| Megadiverse Countries | 0 | - | 4.96 | 135,242 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,864 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,508 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,420 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,209 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,520 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,811 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,038 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,542 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,794 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,243 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 78,417 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,349 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,414 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,128 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,556 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,665 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,204 |
| World Map Quiz | 0 | - | 4.81 | 65,599 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,976 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,658 |
| Countries by Founding Story | 0 | - | 4.95 | 77,755 |
| Countries by Road Signs | 0 | - | 4.98 | 54,307 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,140 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,003 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,493 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,419 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,366 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,474 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,673 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,655 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,534 |
| Widest Countries East to West | 0 | - | 4.92 | 130,395 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,581 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,189 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,495 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,022 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,936 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,423 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,479 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,882 |
| Countries with Double Letters | 0 | - | 4.96 | 96,974 |
| Countries that End in N | 0 | - | 4.94 | 171,835 |
| Countries with Five Letters | 0 | - | 4.96 | 283,623 |
| Countries with Six Letters | 0 | - | 4.94 | 214,350 |
| Countries with W | 0 | - | 4.96 | 160,869 |
| Countries with Z | 0 | - | 4.98 | 292,324 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,226 |
| Countries That End in U | 0 | - | 4.95 | 121,147 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,027 |
| Countries that End in O | 0 | - | 4.92 | 160,120 |
| Countries that End in R | 0 | - | 4.87 | 119,152 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,905 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,748 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,096 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,776 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,712 |
| Countries That End in Y | 0 | - | 4.91 | 186,072 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,392 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,219 |
| Countries that End in I | 0 | - | 4.94 | 135,286 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,557 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,030 |
| Countries That End in NIA | 0 | - | 4.92 | 110,019 |
| Countries That End in BIA | 0 | - | 4.93 | 149,541 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,474 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,732 |
| Countries That End in RIA | 0 | - | 4.93 | 127,028 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,341 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,469 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,111 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,552 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,119 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,778 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,297 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,526 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,857 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,633 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,664 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,361 |
| Countries that End in L | 0 | - | 4.94 | 157,085 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,801 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,336 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,377 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,911 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,402 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,346 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,089 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,397 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,200 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,908 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,174 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,220 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,811 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,204 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,453,318 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,289 |
| One Border Countries | 0 | - | 4.98 | 471,709 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,846,793 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,650,329 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,278 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,933 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,607 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,861 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,169 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,556 |
| NATO Countries | 0 | - | 4.98 | 283,174 |
| EU Countries Quiz | 0 | - | 4.99 | 277,568 |
| Recently Independent Countries | 0 | - | 4.98 | 160,232 |
| French-Speaking Countries | 0 | - | 4.85 | 271,576 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,026 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,619 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,103 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,659 |
| German-Speaking Countries | 0 | - | 4.92 | 145,997 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,212 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,498 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,917 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,196 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,188 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,761 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 113,024 |
| Olympic Host Countries | 0 | - | 4.98 | 201,864 |
