| Landlocked Countries | 0 | - | 4.99 | 414,458 |
| Countries of the World Quiz | 0 | - | 5.00 | 46,989,566 |
| Sahara Desert Countries | 0 | - | 4.98 | 160,942 |
| Himalayan Countries | 0 | - | 4.95 | 135,651 |
| Andean Countries | 0 | - | 4.94 | 82,999 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,353 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,397 |
| Coffee Producing Countries | 0 | - | 4.81 | 66,047 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,720 |
| Danube Countries | 0 | - | 4.97 | 71,161 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 115,880 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,624 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,670 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,573 |
| European Landlocked Countries | 0 | - | 4.99 | 145,869 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,338 |
| Countries with the Most Species | 0 | - | 4.99 | 95,292 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,491 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,230 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,398 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,008 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.89 | 72,648 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,014 |
| Countries in the Alps | 0 | - | 4.86 | 116,958 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,665 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,430 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,087 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,497 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,276 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,077 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,678 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,829 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,565 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,134 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,227 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,092 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,519 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,816 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,818 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,257 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,724 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,304 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 44,886 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 239,763 |
| World Countries - Blind Typing | 0 | - | 5.00 | 105,949 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,676 |
| Largest Countries By Category | 0 | - | 4.97 | 156,892 |
| Countries by Countries | 0 | - | 4.96 | 62,345 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,532 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 61,996 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,355 |
| All Countries by Population With a Map | 0 | - | 4.98 | 106,996 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,201 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 87,844 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,723,721 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 324,997 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 372,437 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 402,257 |
| Island Countries | 0 | - | 4.99 | 707,948 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,040,607 |
| Northernmost Countries | 0 | - | 4.99 | 358,180 |
| Countries of South America | 0 | - | 5.00 | 916,224 |
| Countries of Oceania | 0 | - | 5.00 | 1,042,354 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,851,323 |
| "Land" Countries | 0 | - | 4.98 | 333,883 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,364,722 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 171,655 |
| Countries with Megacities | 0 | - | 4.99 | 247,640 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,503 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,220 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 135,902 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,149 |
| Countries by Official Language | 0 | - | 4.95 | 192,953 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 293,382 |
| Countries in their Native Language | 0 | - | 4.99 | 196,809 |
| Independence from Whom | 0 | - | 4.99 | 209,919 |
| Subdivisions by Country | 0 | - | 4.86 | 50,107 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 130,907 |
| Megadiverse Countries | 0 | - | 4.97 | 133,967 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 129,970 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 54,958 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,472 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,880 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,770 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,061 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,196 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,223 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,255 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,761 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 75,747 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,458 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,559 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,542 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,732 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 71,066 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 108,832 |
| World Map Quiz | 0 | - | 4.81 | 63,660 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,164 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,417 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 63,241 |
| Countries by Founding Story | 0 | - | 4.95 | 76,622 |
| Countries by Road Signs | 0 | - | 4.98 | 53,200 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,572 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,359 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,087 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,037 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,003 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,186 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,389 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,011 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,436 |
| Widest Countries East to West | 0 | - | 4.92 | 128,938 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,253 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,346 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,607 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,764 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,707 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,137 |
| Countries by Contribution to UN Budget | 0 | - | 4.89 | 73,347 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,620 |
| Countries with Double Letters | 0 | - | 4.96 | 93,557 |
| Countries that End in N | 0 | - | 4.94 | 157,039 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 258,863 |
| Countries with Six Letters | 0 | - | 4.93 | 210,537 |
| Countries with W | 0 | - | 4.97 | 158,341 |
| Countries with Z | 0 | - | 4.98 | 288,066 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,657 |
| Countries That End in U | 0 | - | 4.95 | 119,581 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,739 |
| Countries that End in O | 0 | - | 4.92 | 158,612 |
| Countries that End in R | 0 | - | 4.87 | 118,328 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,896 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,269 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,456 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,575 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,122 |
| Countries That End in Y | 0 | - | 4.90 | 185,251 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,503 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,801 |
| Countries that End in I | 0 | - | 4.94 | 134,489 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,337 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,252 |
| Countries That End in NIA | 0 | - | 4.92 | 109,068 |
| Countries That End in BIA | 0 | - | 4.92 | 147,783 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,164 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,578 |
| Countries That End in RIA | 0 | - | 4.93 | 126,144 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 110,102 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,509 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,601 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 124,968 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,460 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 73,973 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,203 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,726 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,599 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,853 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,242 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 52,908 |
| Countries that End in L | 0 | - | 4.94 | 156,098 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 211,694 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,006 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,567 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,367 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,475 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 247,652 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,453 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 139,836 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,499 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 223,856 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,814 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,763 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,212 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,444 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,373 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,436,502 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,000 |
| One Border Countries | 0 | - | 4.98 | 464,979 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,697 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,804,486 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,592,160 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,035 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,299 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,046 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,569 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 92,831 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,422 |
| Countries by National Anthem | 0 | - | 4.92 | 71,050 |
| NATO Countries | 0 | - | 4.98 | 276,435 |
| EU Countries Quiz | 0 | - | 4.99 | 270,410 |
| Recently Independent Countries | 0 | - | 4.98 | 158,093 |
| French-Speaking Countries | 0 | - | 4.85 | 269,053 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,414 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,275 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,345 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 268,891 |
| German-Speaking Countries | 0 | - | 4.89 | 123,560 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,692 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,367 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 163,508 |
