| Landlocked Countries | 0 | - | 4.99 | 426,921 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,943,651 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 208,675 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,755 |
| Himalayan Countries | 0 | - | 4.93 | 140,674 |
| Andean Countries | 0 | - | 4.94 | 85,732 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,851 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,394 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,407 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,635 |
| Danube Countries | 0 | - | 4.97 | 72,515 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,739 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,940 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,366 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,823 |
| European Landlocked Countries | 0 | - | 4.99 | 147,704 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,478 |
| Countries with the Most Species | 0 | - | 4.99 | 103,625 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,580 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,802 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,937 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,902 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,655 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,105 |
| Countries in the Alps | 0 | - | 4.87 | 118,917 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,905 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,055 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,038 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,138 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,088 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,356 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,536 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,965 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,493 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,284 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,933 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,815 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,644 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,894 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,989 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,073 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,695 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,130 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,801 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,136 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,396 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,589 |
| Largest Countries By Category | 0 | - | 4.97 | 159,025 |
| Countries by Countries | 0 | - | 4.97 | 63,770 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,383 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,438 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,698 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,192 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,809,904 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 336,288 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,958 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,163 |
| Island Countries | 0 | - | 4.99 | 712,876 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,764 |
| Northernmost Countries | 0 | - | 4.99 | 364,439 |
| Countries of South America | 0 | - | 5.00 | 933,754 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,820 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,896 |
| "Land" Countries | 0 | - | 4.98 | 338,852 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,396,082 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,413 |
| Countries with Megacities | 0 | - | 4.99 | 267,636 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,054 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,282 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,401 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,386 |
| Countries by Official Language | 0 | - | 4.95 | 196,161 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,852 |
| Countries in their Native Language | 0 | - | 4.99 | 199,896 |
| Independence from Whom | 0 | - | 4.99 | 213,319 |
| Subdivisions by Country | 0 | - | 4.87 | 50,651 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,606 |
| Megadiverse Countries | 0 | - | 4.96 | 147,941 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,076 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,568 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,772 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,246 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,409 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,909 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,237 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,604 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,142 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,280 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,702 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,461 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,486 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,196 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,618 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,941 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,634 |
| World Map Quiz | 0 | - | 4.81 | 65,874 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,716 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,775 |
| Countries by Founding Story | 0 | - | 4.95 | 77,890 |
| Countries by Road Signs | 0 | - | 4.98 | 54,420 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,435 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,191 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,657 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,825 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,521 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,629 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,821 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,743 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,899 |
| Widest Countries East to West | 0 | - | 4.92 | 130,805 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,623 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,350 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,545 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,131 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,068 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,582 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,526 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,916 |
| Countries with Double Letters | 0 | - | 4.96 | 97,507 |
| Countries that End in N | 0 | - | 4.95 | 172,531 |
| Countries with Five Letters | 0 | - | 4.96 | 284,495 |
| Countries with Six Letters | 0 | - | 4.94 | 214,853 |
| Countries with W | 0 | - | 4.96 | 161,236 |
| Countries with Z | 0 | - | 4.98 | 292,881 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,591 |
| Countries That End in U | 0 | - | 4.95 | 121,347 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,344 |
| Countries that End in O | 0 | - | 4.92 | 160,337 |
| Countries that End in R | 0 | - | 4.87 | 119,258 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,035 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,075 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 183,919 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,105 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,592 |
| Countries That End in Y | 0 | - | 4.91 | 186,152 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,107 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,376 |
| Countries that End in I | 0 | - | 4.94 | 135,391 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,139 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,121 |
| Countries That End in NIA | 0 | - | 4.92 | 110,132 |
| Countries That End in BIA | 0 | - | 4.93 | 149,694 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,887 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,862 |
| Countries That End in RIA | 0 | - | 4.93 | 127,120 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,507 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,854 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,329 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,790 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,342 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,883 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,415 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,584 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,013 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,711 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,856 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,555 |
| Countries that End in L | 0 | - | 4.94 | 157,212 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,405 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,369 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,855 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,137 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,523 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,597 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,258 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,502 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,380 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,138 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,297 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,285 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,965 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,867 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,332 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,516 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,839 |
| One Border Countries | 0 | - | 4.98 | 472,389 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,737 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,851,818 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,657,896 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,427 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,445 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,781 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,969 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,325 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,690 |
| Countries by National Anthem | 0 | - | 4.92 | 71,428 |
| NATO Countries | 0 | - | 4.98 | 283,827 |
| EU Countries Quiz | 0 | - | 4.99 | 278,683 |
| Recently Independent Countries | 0 | - | 4.98 | 160,466 |
| French-Speaking Countries | 0 | - | 4.85 | 271,820 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,214 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,087 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,743 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,481 |
| German-Speaking Countries | 0 | - | 4.92 | 146,067 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,715 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,827 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,584 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,681 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 120,741 |
