| Landlocked Countries | 0 | - | 4.99 | 415,802 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,096,979 |
| Countries with the Highest Life Expectancy | 0 | - | 4.89 | 207,487 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,497 |
| Himalayan Countries | 0 | - | 4.95 | 136,136 |
| Andean Countries | 0 | - | 4.95 | 83,256 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,562 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,750 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,263 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,893 |
| Danube Countries | 0 | - | 4.97 | 71,308 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,073 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,762 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,967 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,917 |
| European Landlocked Countries | 0 | - | 4.99 | 146,015 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,614 |
| Countries with the Most Species | 0 | - | 4.99 | 95,375 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,752 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,289 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,456 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,097 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,747 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,120 |
| Countries in the Alps | 0 | - | 4.86 | 117,200 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,814 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,701 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,192 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,637 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,441 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,188 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,872 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,929 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,735 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,265 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,301 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,166 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,655 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,920 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,927 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,565 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,830 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,370 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,104 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,520 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,353 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,762 |
| Largest Countries By Category | 0 | - | 4.97 | 157,124 |
| Countries by Countries | 0 | - | 4.96 | 62,499 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,754 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,047 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,392 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,013 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,734,525 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,200 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,299 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,062 |
| Island Countries | 0 | - | 4.99 | 708,519 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,339 |
| Northernmost Countries | 0 | - | 4.99 | 358,949 |
| Countries of South America | 0 | - | 5.00 | 918,543 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,190 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,855,924 |
| "Land" Countries | 0 | - | 4.98 | 334,228 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,362 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,044 |
| Countries with Megacities | 0 | - | 4.99 | 248,485 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,925 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,425 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,314 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,367 |
| Countries by Official Language | 0 | - | 4.95 | 193,597 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,100 |
| Countries in their Native Language | 0 | - | 4.99 | 197,305 |
| Independence from Whom | 0 | - | 4.99 | 210,316 |
| Subdivisions by Country | 0 | - | 4.86 | 50,164 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,172 |
| Megadiverse Countries | 0 | - | 4.96 | 134,491 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,490 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,042 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,576 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,927 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,940 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,159 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,434 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,482 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,321 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,794 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,033 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,544 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,647 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,615 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,819 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,146 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,277 |
| World Map Quiz | 0 | - | 4.81 | 63,899 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,952 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,638 |
| Countries by Founding Story | 0 | - | 4.95 | 76,783 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,892 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,584 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,298 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,476 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,172 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,366 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,557 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,103 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,576 |
| Widest Countries East to West | 0 | - | 4.92 | 129,076 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,302 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,558 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,671 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,902 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,893 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,276 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,919 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,654 |
| Countries with Double Letters | 0 | - | 4.96 | 93,780 |
| Countries that End in N | 0 | - | 4.94 | 157,215 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,161 |
| Countries with Six Letters | 0 | - | 4.93 | 210,803 |
| Countries with W | 0 | - | 4.97 | 158,479 |
| Countries with Z | 0 | - | 4.98 | 288,360 |
| Countries with Letters Missing | 0 | - | 4.97 | 184,837 |
| Countries That End in U | 0 | - | 4.95 | 119,652 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 132,973 |
| Countries that End in O | 0 | - | 4.92 | 158,688 |
| Countries that End in R | 0 | - | 4.87 | 118,400 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 154,956 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,514 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,612 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,701 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,261 |
| Countries That End in Y | 0 | - | 4.90 | 185,311 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,699 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,974 |
| Countries that End in I | 0 | - | 4.94 | 134,579 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,564 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,342 |
| Countries That End in NIA | 0 | - | 4.92 | 109,192 |
| Countries That End in BIA | 0 | - | 4.92 | 148,268 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,323 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,688 |
| Countries That End in RIA | 0 | - | 4.93 | 126,243 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,227 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,876 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,749 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,103 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,650 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,063 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,340 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,854 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,746 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,927 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,406 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,070 |
| Countries that End in L | 0 | - | 4.94 | 156,193 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,433 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,034 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,667 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,498 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,561 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,127 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,710 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,044 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,730 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,142 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,980 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,848 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,262 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,482 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,459 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,694 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,544 |
| One Border Countries | 0 | - | 4.98 | 465,997 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,810,194 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,599,696 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,213 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,700 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,217 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,887 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,014 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,564 |
| Countries by National Anthem | 0 | - | 4.93 | 71,090 |
| NATO Countries | 0 | - | 4.98 | 277,581 |
| EU Countries Quiz | 0 | - | 4.99 | 271,182 |
| Recently Independent Countries | 0 | - | 4.98 | 158,271 |
| French-Speaking Countries | 0 | - | 4.85 | 269,510 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,467 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,697 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,983 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,820 |
| German-Speaking Countries | 0 | - | 4.89 | 136,138 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,954 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,582 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,088 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,761 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 116,913 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.91 | 112,005 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,220 |
