| Landlocked Countries | 0 | - | 4.99 | 424,090 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,752,286 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,458 |
| Himalayan Countries | 0 | - | 4.94 | 139,626 |
| Andean Countries | 0 | - | 4.94 | 85,108 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,295 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,529 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,864 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,154 |
| Danube Countries | 0 | - | 4.97 | 72,234 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,358 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,658 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,770 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,260 |
| European Landlocked Countries | 0 | - | 4.99 | 147,410 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,019 |
| Countries with the Most Species | 0 | - | 4.99 | 103,446 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,146 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,692 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,803 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,716 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,446 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,866 |
| Countries in the Alps | 0 | - | 4.87 | 118,516 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,165 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,503 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,828 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,838 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,762 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,107 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,953 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,696 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,318 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,031 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,773 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,639 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,407 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,651 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,742 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,420 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,488 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 65,367 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,425 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,025 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,727 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,401 |
| Largest Countries By Category | 0 | - | 4.97 | 158,580 |
| Countries by Countries | 0 | - | 4.96 | 63,464 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,036 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,356 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,632 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,937 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,793,715 |
| Regions of Countries #1 | 0 | - | 4.96 | 160,060 |
| Regions of Countries #2 | 0 | - | 4.95 | 124,396 |
| Regions of Countries #3 | 0 | - | 4.85 | 91,263 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,515 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,185 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,691 |
| Island Countries | 0 | - | 4.99 | 711,885 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,793 |
| Northernmost Countries | 0 | - | 4.99 | 363,223 |
| Countries of South America | 0 | - | 5.00 | 930,295 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,702 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,884,189 |
| "Land" Countries | 0 | - | 4.98 | 337,951 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,389,494 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,535 |
| Countries with Megacities | 0 | - | 4.99 | 266,032 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,322 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,784 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,583 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,906 |
| Countries by Official Language | 0 | - | 4.95 | 195,691 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,194 |
| Countries in their Native Language | 0 | - | 4.99 | 199,467 |
| Independence from Whom | 0 | - | 4.99 | 212,648 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,139 |
| Megadiverse Countries | 0 | - | 4.96 | 135,167 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,519 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,465 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,362 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,169 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,397 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,718 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,822 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,479 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,759 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,215 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,127 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,279 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,346 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,071 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,489 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,613 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,909 |
| World Map Quiz | 0 | - | 4.81 | 65,401 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,414 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,544 |
| Countries by Founding Story | 0 | - | 4.95 | 77,615 |
| Countries by Road Signs | 0 | - | 4.98 | 54,230 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,897 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,783 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,389 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,089 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,234 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,367 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,562 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,603 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,643 |
| Widest Countries East to West | 0 | - | 4.92 | 130,260 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,546 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,053 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,449 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,950 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,825 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,321 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,455 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,859 |
| Countries with Double Letters | 0 | - | 4.96 | 96,734 |
| Countries that End in N | 0 | - | 4.95 | 171,618 |
| Countries with Five Letters | 0 | - | 4.96 | 283,284 |
| Countries with Six Letters | 0 | - | 4.94 | 214,070 |
| Countries with W | 0 | - | 4.96 | 160,688 |
| Countries with Z | 0 | - | 4.98 | 292,035 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,048 |
| Countries That End in U | 0 | - | 4.95 | 121,046 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,836 |
| Countries that End in O | 0 | - | 4.92 | 159,688 |
| Countries that End in R | 0 | - | 4.87 | 119,087 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,843 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,517 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,965 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,677 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,600 |
| Countries That End in Y | 0 | - | 4.91 | 186,011 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,229 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,101 |
| Countries that End in I | 0 | - | 4.94 | 135,226 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,417 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,954 |
| Countries That End in NIA | 0 | - | 4.92 | 109,939 |
| Countries That End in BIA | 0 | - | 4.93 | 149,423 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,359 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,646 |
| Countries That End in RIA | 0 | - | 4.93 | 126,955 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,241 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,162 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,982 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,418 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,972 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,705 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,211 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,744 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,560 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,537 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,232 |
| Countries that End in L | 0 | - | 4.94 | 157,008 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,835 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,165 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,102 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,148 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,156 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,947 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,320 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,084 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,763 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,080 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,181 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,764 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,137 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,634 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,837 |
| One Border Countries | 0 | - | 4.98 | 471,095 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,948 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,644,720 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,143 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,663 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,476 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,749 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 94,014 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,427 |
| Countries by National Anthem | 0 | - | 4.92 | 71,366 |
| NATO Countries | 0 | - | 4.98 | 282,620 |
| EU Countries Quiz | 0 | - | 4.99 | 276,879 |
| Recently Independent Countries | 0 | - | 4.98 | 159,746 |
| French-Speaking Countries | 0 | - | 4.85 | 271,358 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,987 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,272 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,407 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,831 |
| German-Speaking Countries | 0 | - | 4.92 | 145,917 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,134 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,430 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 167,358 |
| Top Five Countries by Religion | 0 | - | 4.93 | 172,876 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 119,741 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 113,636 |
