| Landlocked Countries | 0 | - | 4.99 | 424,796 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,805,174 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,762 |
| Himalayan Countries | 0 | - | 4.93 | 139,866 |
| Andean Countries | 0 | - | 4.94 | 85,229 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,407 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,728 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,972 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,275 |
| Danube Countries | 0 | - | 4.97 | 72,293 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,445 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,736 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,910 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,409 |
| European Landlocked Countries | 0 | - | 4.99 | 147,488 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,138 |
| Countries with the Most Species | 0 | - | 4.99 | 103,506 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,278 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,721 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,833 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,769 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,504 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,928 |
| Countries in the Alps | 0 | - | 4.87 | 118,640 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,402 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,663 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,894 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,922 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,846 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,158 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,287 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,792 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,359 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,092 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,805 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,674 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,471 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,708 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,798 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,579 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,538 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,617 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,526 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,309 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,912 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,454 |
| Largest Countries By Category | 0 | - | 4.97 | 158,707 |
| Countries by Countries | 0 | - | 4.96 | 63,541 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,144 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,371 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,646 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,010 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,798,141 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 334,666 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,406 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 409,135 |
| Island Countries | 0 | - | 4.99 | 712,184 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,053,614 |
| Northernmost Countries | 0 | - | 4.99 | 363,553 |
| Countries of South America | 0 | - | 5.00 | 931,325 |
| Countries of Oceania | 0 | - | 5.00 | 1,061,671 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,886,234 |
| "Land" Countries | 0 | - | 4.98 | 338,151 |
| Countries With the Most Expats | 0 | - | 4.69 | 49,615 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,391,396 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,893 |
| Countries with Megacities | 0 | - | 4.99 | 266,594 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,594 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,973 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,898 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,076 |
| Countries by Official Language | 0 | - | 4.95 | 195,827 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,393 |
| Countries in their Native Language | 0 | - | 4.99 | 199,606 |
| Independence from Whom | 0 | - | 4.99 | 212,848 |
| Subdivisions by Country | 0 | - | 4.87 | 50,575 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,286 |
| Megadiverse Countries | 0 | - | 4.96 | 135,213 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,810 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,494 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,400 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,198 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,480 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,785 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,989 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,522 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,785 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,231 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,302 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,327 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,392 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,113 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,537 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,651 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,108 |
| World Map Quiz | 0 | - | 4.81 | 65,550 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,764 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,615 |
| Countries by Founding Story | 0 | - | 4.95 | 77,713 |
| Countries by Road Signs | 0 | - | 4.98 | 54,284 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,054 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,977 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,457 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,319 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,314 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,443 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,643 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,633 |
| Tallest Countries North to South | 0 | - | 4.86 | 130,367 |
| Widest Countries East to West | 0 | - | 4.92 | 130,355 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,576 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,149 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,481 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,997 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,894 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,390 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,470 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,873 |
| Countries with Double Letters | 0 | - | 4.96 | 96,865 |
| Countries that End in N | 0 | - | 4.95 | 171,750 |
| Countries with Five Letters | 0 | - | 4.96 | 283,490 |
| Countries with Six Letters | 0 | - | 4.94 | 214,225 |
| Countries with W | 0 | - | 4.96 | 160,796 |
| Countries with Z | 0 | - | 4.98 | 292,213 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,149 |
| Countries That End in U | 0 | - | 4.95 | 121,102 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,960 |
| Countries that End in O | 0 | - | 4.92 | 159,743 |
| Countries that End in R | 0 | - | 4.87 | 119,128 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,886 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,659 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 171,044 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,748 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,675 |
| Countries That End in Y | 0 | - | 4.91 | 186,042 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,341 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,172 |
| Countries that End in I | 0 | - | 4.94 | 135,263 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,507 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,998 |
| Countries That End in NIA | 0 | - | 4.92 | 109,987 |
| Countries That End in BIA | 0 | - | 4.93 | 149,506 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,422 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,697 |
| Countries That End in RIA | 0 | - | 4.93 | 127,002 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,294 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,372 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,065 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,506 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,073 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,761 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,256 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,517 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,815 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,600 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,622 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,307 |
| Countries that End in L | 0 | - | 4.94 | 157,058 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 217,471 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,325 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,132 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,735 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,339 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,287 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,045 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,372 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,175 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,866 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,142 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,209 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,801 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,179 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,452,725 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,122 |
| One Border Countries | 0 | - | 4.98 | 471,485 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,657 |
| Countries by Net Migration | 0 | - | 4.52 | 84,161 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,845,301 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,648,429 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,246 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,845 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,555 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,830 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,117 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,516 |
| Countries by National Anthem | 0 | - | 4.92 | 71,388 |
| NATO Countries | 0 | - | 4.98 | 282,988 |
| EU Countries Quiz | 0 | - | 4.99 | 277,309 |
| Recently Independent Countries | 0 | - | 4.98 | 159,865 |
| French-Speaking Countries | 0 | - | 4.85 | 271,496 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,014 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,503 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,894 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 276,389 |
| German-Speaking Countries | 0 | - | 4.92 | 145,961 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,186 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,476 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 167,670 |
| Top Five Countries by Religion | 0 | - | 4.93 | 173,094 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,990 |
