| Landlocked Countries | 0 | - | 4.99 | 415,815 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,098,997 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,508 |
| Himalayan Countries | 0 | - | 4.95 | 136,147 |
| Andean Countries | 0 | - | 4.95 | 83,261 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,565 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,755 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,268 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 64,893 |
| Danube Countries | 0 | - | 4.97 | 71,309 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,076 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,764 |
| Countries with the Worst Passports | 0 | - | 4.94 | 82,973 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 147,924 |
| European Landlocked Countries | 0 | - | 4.99 | 146,019 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,617 |
| Countries with the Most Species | 0 | - | 4.99 | 95,375 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,756 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,290 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,458 |
| 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 | 57,122 |
| Countries in the Alps | 0 | - | 4.86 | 117,205 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,816 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,710 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,196 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,638 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,445 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,188 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,877 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,933 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,736 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,268 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,301 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,169 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,658 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,920 |
| Countries with the Most Grassland | 0 | - | 4.93 | 76,930 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,567 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,835 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,372 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,105 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,534 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,358 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,764 |
| Largest Countries By Category | 0 | - | 4.97 | 157,131 |
| Countries by Countries | 0 | - | 4.96 | 62,501 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,757 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,049 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,392 |
| All Countries by Population With a Map | 0 | - | 4.98 | 107,458 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,343 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,017 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,734,735 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,229 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,338 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,078 |
| Island Countries | 0 | - | 4.99 | 708,532 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,042,362 |
| Northernmost Countries | 0 | - | 4.99 | 358,962 |
| Countries of South America | 0 | - | 5.00 | 918,567 |
| Countries of Oceania | 0 | - | 5.00 | 1,045,234 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,856,032 |
| "Land" Countries | 0 | - | 4.98 | 334,231 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,368,414 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,049 |
| Countries with Megacities | 0 | - | 4.99 | 248,510 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 197,930 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,432 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,316 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,373 |
| Countries by Official Language | 0 | - | 4.95 | 193,625 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,128 |
| Countries in their Native Language | 0 | - | 4.99 | 197,338 |
| Independence from Whom | 0 | - | 4.99 | 210,328 |
| Subdivisions by Country | 0 | - | 4.86 | 50,165 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,176 |
| Megadiverse Countries | 0 | - | 4.96 | 134,492 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,519 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,044 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,579 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,928 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 161,944 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,159 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,439 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,488 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,321 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,795 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 76,037 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,544 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,648 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,615 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,820 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,150 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,285 |
| World Map Quiz | 0 | - | 4.81 | 63,904 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 153,959 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,639 |
| Countries by Founding Story | 0 | - | 4.95 | 76,785 |
| Countries by Road Signs | 0 | - | 4.98 | 53,325 |
| Southernmost Countries of the World | 0 | - | 4.99 | 226,898 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,584 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,303 |
| Countries With the Most Languages | 0 | - | 4.89 | 200,484 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,175 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,368 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,558 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,103 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,578 |
| Widest Countries East to West | 0 | - | 4.92 | 129,079 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,304 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,559 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,672 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,902 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,894 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,283 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 76,929 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,654 |
| Countries with Double Letters | 0 | - | 4.96 | 93,790 |
| Countries that End in N | 0 | - | 4.94 | 157,220 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,170 |
| Countries with Six Letters | 0 | - | 4.93 | 210,810 |
| Countries with W | 0 | - | 4.97 | 158,484 |
| Countries with Z | 0 | - | 4.98 | 288,369 |
| 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 | 132,975 |
| Countries that End in O | 0 | - | 4.92 | 158,689 |
| 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 | 207,523 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,618 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,702 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,265 |
| Countries That End in Y | 0 | - | 4.90 | 185,311 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,704 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 151,978 |
| Countries that End in I | 0 | - | 4.94 | 134,583 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,571 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,342 |
| Countries That End in NIA | 0 | - | 4.92 | 109,198 |
| Countries That End in BIA | 0 | - | 4.92 | 148,300 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,324 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,690 |
| Countries That End in RIA | 0 | - | 4.93 | 126,244 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,227 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 225,881 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,751 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,111 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,651 |
| 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 | 102,859 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,750 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,930 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,409 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,079 |
| Countries that End in L | 0 | - | 4.94 | 156,193 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,450 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,034 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,668 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,498 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,562 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,131 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,711 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,059 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,736 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,145 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 151,983 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,848 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,264 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,483 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,463 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,438,727 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 378,554 |
| One Border Countries | 0 | - | 4.98 | 466,008 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 24,937 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,810,301 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,599,849 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,213 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 266,707 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,223 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 111,915 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,017 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,568 |
| Countries by National Anthem | 0 | - | 4.93 | 71,092 |
| NATO Countries | 0 | - | 4.98 | 277,590 |
| EU Countries Quiz | 0 | - | 4.99 | 271,193 |
| Recently Independent Countries | 0 | - | 4.98 | 158,278 |
| French-Speaking Countries | 0 | - | 4.85 | 269,525 |
| Natural Features of Countries #1 | 0 | - | 4.86 | 83,467 |
| Countries That Use the Euro | 0 | - | 4.95 | 103,699 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 285,997 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 269,835 |
| German-Speaking Countries | 0 | - | 4.89 | 137,056 |
| Countries with Wild Tigers | 0 | - | 4.96 | 135,956 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,584 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,092 |
| Top Five Countries by Religion | 0 | - | 4.93 | 169,773 |
