| Landlocked Countries | 0 | - | 4.99 | 423,966 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,742,554 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,406 |
| Himalayan Countries | 0 | - | 4.94 | 139,574 |
| Andean Countries | 0 | - | 4.94 | 85,082 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,267 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,494 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,830 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,136 |
| Danube Countries | 0 | - | 4.97 | 72,219 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,325 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,641 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,734 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,241 |
| European Landlocked Countries | 0 | - | 4.99 | 147,397 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,004 |
| Countries with the Most Species | 0 | - | 4.99 | 103,430 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,123 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,686 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,799 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,708 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,443 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,856 |
| Countries in the Alps | 0 | - | 4.87 | 118,507 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,118 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,479 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,822 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,820 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,756 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,101 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,938 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,686 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,310 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,026 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,768 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,634 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,396 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,642 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,733 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,397 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,480 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,311 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,383 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,966 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,693 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,391 |
| Largest Countries By Category | 0 | - | 4.97 | 158,560 |
| Countries by Countries | 0 | - | 4.96 | 63,452 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,027 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,351 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,626 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,319 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,215 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,923 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,959 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,357 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,146 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,636 |
| Island Countries | 0 | - | 4.99 | 711,822 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,601 |
| Northernmost Countries | 0 | - | 4.99 | 363,144 |
| Countries of South America | 0 | - | 5.00 | 930,121 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,475 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,805 |
| "Land" Countries | 0 | - | 4.98 | 337,909 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,022 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,469 |
| Countries with Megacities | 0 | - | 4.99 | 265,926 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,266 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,762 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,523 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,873 |
| Countries by Official Language | 0 | - | 4.95 | 195,671 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,155 |
| Countries in their Native Language | 0 | - | 4.99 | 199,442 |
| Independence from Whom | 0 | - | 4.99 | 212,612 |
| Subdivisions by Country | 0 | - | 4.87 | 50,543 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,114 |
| Megadiverse Countries | 0 | - | 4.96 | 135,160 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,461 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,353 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,166 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,383 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,707 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,784 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,476 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,751 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,208 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,109 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,274 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,336 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,065 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,481 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,606 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,874 |
| World Map Quiz | 0 | - | 4.81 | 65,388 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,339 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,541 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,396 |
| Countries by Founding Story | 0 | - | 4.95 | 77,579 |
| Countries by Road Signs | 0 | - | 4.98 | 54,215 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,770 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,710 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,366 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,018 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,217 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,340 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,548 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,594 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,362 |
| Widest Countries East to West | 0 | - | 4.92 | 130,229 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,538 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,040 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,446 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,941 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,818 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,189 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,450 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,703 |
| Countries that End in N | 0 | - | 4.95 | 171,586 |
| Countries with Five Letters | 0 | - | 4.96 | 283,243 |
| Countries with Six Letters | 0 | - | 4.94 | 214,047 |
| Countries with W | 0 | - | 4.96 | 160,657 |
| Countries with Z | 0 | - | 4.98 | 292,000 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,023 |
| Countries That End in U | 0 | - | 4.95 | 121,036 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,819 |
| Countries that End in O | 0 | - | 4.92 | 159,680 |
| Countries that End in R | 0 | - | 4.87 | 119,081 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,837 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,490 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,946 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,665 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,588 |
| Countries That End in Y | 0 | - | 4.91 | 186,005 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,210 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,088 |
| Countries that End in I | 0 | - | 4.94 | 135,222 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,394 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,943 |
| Countries That End in NIA | 0 | - | 4.92 | 109,931 |
| Countries That End in BIA | 0 | - | 4.93 | 149,413 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,346 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,639 |
| Countries That End in RIA | 0 | - | 4.93 | 126,949 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,229 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,140 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,974 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,412 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,959 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,697 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,203 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,732 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,553 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,531 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,216 |
| Countries that End in L | 0 | - | 4.94 | 157,001 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,778 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,162 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,095 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,142 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,138 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,933 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,307 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,073 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,745 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,067 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,176 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,761 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,125 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,431 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,776 |
| One Border Countries | 0 | - | 4.98 | 471,043 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,594 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,511 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,840 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,130 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,635 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,447 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,739 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,993 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,411 |
| Countries by National Anthem | 0 | - | 4.92 | 71,362 |
| NATO Countries | 0 | - | 4.98 | 282,556 |
| EU Countries Quiz | 0 | - | 4.99 | 276,786 |
| Recently Independent Countries | 0 | - | 4.98 | 159,726 |
| French-Speaking Countries | 0 | - | 4.85 | 271,336 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,982 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,231 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,352 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,762 |
| German-Speaking Countries | 0 | - | 4.92 | 145,906 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,130 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,422 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 167,293 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,826 |
