| Landlocked Countries | 0 | - | 4.99 | 422,594 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,631,337 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,825 |
| Himalayan Countries | 0 | - | 4.95 | 139,006 |
| Andean Countries | 0 | - | 4.93 | 84,785 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,011 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,088 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,598 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,919 |
| Danube Countries | 0 | - | 4.97 | 72,095 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,122 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,493 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,444 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,929 |
| European Landlocked Countries | 0 | - | 4.99 | 147,226 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,762 |
| Countries with the Most Species | 0 | - | 4.99 | 103,304 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,877 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,630 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,748 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,597 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,316 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,738 |
| Countries in the Alps | 0 | - | 4.87 | 118,307 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,498 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,174 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,717 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,668 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,582 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,996 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,748 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,567 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,224 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,918 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,690 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,572 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,293 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,537 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,598 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,046 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,365 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,457 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,197 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,268 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,316 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,279 |
| Largest Countries By Category | 0 | - | 4.97 | 158,334 |
| Countries by Countries | 0 | - | 4.96 | 63,311 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,770 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,310 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,580 |
| All Countries by Population With a Map | 0 | - | 4.99 | 109,795 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,085 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,748 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,783,099 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,137 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,687 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,705 |
| Island Countries | 0 | - | 4.99 | 711,251 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,626 |
| Northernmost Countries | 0 | - | 4.99 | 362,263 |
| Countries of South America | 0 | - | 5.00 | 928,202 |
| Countries of Oceania | 0 | - | 5.00 | 1,058,045 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,879,175 |
| "Land" Countries | 0 | - | 4.98 | 337,517 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,385,212 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,076 |
| Countries with Megacities | 0 | - | 4.99 | 264,985 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,896 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,577 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,158 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,649 |
| Countries by Official Language | 0 | - | 4.95 | 195,365 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,540 |
| Countries in their Native Language | 0 | - | 4.99 | 199,157 |
| Independence from Whom | 0 | - | 4.99 | 212,245 |
| Subdivisions by Country | 0 | - | 4.87 | 50,457 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,837 |
| Megadiverse Countries | 0 | - | 4.96 | 135,063 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,197 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,390 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,268 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,129 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,209 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,636 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,553 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,121 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,690 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,167 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,807 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,928 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,237 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,999 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,391 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,520 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,375 |
| World Map Quiz | 0 | - | 4.81 | 65,180 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,601 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,410 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,197 |
| Countries by Founding Story | 0 | - | 4.95 | 77,422 |
| Countries by Road Signs | 0 | - | 4.98 | 54,070 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,214 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,350 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,055 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,401 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,954 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,065 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,344 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,478 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,615 |
| Widest Countries East to West | 0 | - | 4.92 | 129,714 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,471 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,451 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,143 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,809 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,642 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,928 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,396 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries With the Tallest People | 0 | - | 4.93 | 95,010 |
| Countries with Double Letters | 0 | - | 4.96 | 96,374 |
| Countries that End in N | 0 | - | 4.95 | 171,262 |
| Countries with Five Letters | 0 | - | 4.96 | 282,743 |
| Countries with Six Letters | 0 | - | 4.94 | 213,702 |
| Countries with W | 0 | - | 4.97 | 160,431 |
| Countries with Z | 0 | - | 4.98 | 291,610 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,795 |
| Countries That End in U | 0 | - | 4.95 | 120,896 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,553 |
| Countries that End in O | 0 | - | 4.92 | 159,552 |
| Countries that End in R | 0 | - | 4.87 | 119,002 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,762 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,229 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,755 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,525 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,451 |
| Countries That End in Y | 0 | - | 4.91 | 185,910 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,003 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,921 |
| Countries that End in I | 0 | - | 4.94 | 135,133 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,180 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,851 |
| Countries That End in NIA | 0 | - | 4.92 | 109,831 |
| Countries That End in BIA | 0 | - | 4.93 | 149,263 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,165 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,476 |
| Countries That End in RIA | 0 | - | 4.93 | 126,851 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,070 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,762 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,780 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,207 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,762 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,610 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,073 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,461 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,578 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,458 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,349 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,048 |
| Countries that End in L | 0 | - | 4.94 | 156,883 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,053 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,282 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,065 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,992 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,038 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,865 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,731 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,193 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,900 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,543 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,916 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,126 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,722 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,902 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,143 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,212 |
| One Border Countries | 0 | - | 4.98 | 470,198 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,504 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,837,120 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,636,027 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,999 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,337 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,246 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,613 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,803 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,274 |
| Countries by National Anthem | 0 | - | 4.93 | 71,314 |
| NATO Countries | 0 | - | 4.98 | 281,825 |
| EU Countries Quiz | 0 | - | 4.99 | 275,868 |
| Recently Independent Countries | 0 | - | 4.98 | 159,538 |
| French-Speaking Countries | 0 | - | 4.85 | 271,009 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,918 |
| Countries That Use the Euro | 0 | - | 4.95 | 105,720 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 289,612 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 274,808 |
| German-Speaking Countries | 0 | - | 4.91 | 145,801 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,007 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,322 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 166,609 |
