| Landlocked Countries | 0 | - | 4.99 | 418,148 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,280,580 |
| Countries with the Highest Life Expectancy | 0 | - | 4.90 | 207,729 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,593 |
| Himalayan Countries | 0 | - | 4.94 | 137,085 |
| Andean Countries | 0 | - | 4.95 | 83,760 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,004 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,381 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,680 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,248 |
| Danube Countries | 0 | - | 4.97 | 71,576 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,432 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,983 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,505 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,563 |
| European Landlocked Countries | 0 | - | 4.99 | 146,679 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,013 |
| Countries with the Most Species | 0 | - | 4.99 | 102,780 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,152 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,395 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,558 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,256 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,926 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,306 |
| Countries in the Alps | 0 | - | 4.87 | 117,575 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,049 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,224 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,364 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,903 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,015 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,391 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,179 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,123 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,924 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,488 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,441 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,300 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,866 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,126 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,152 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,022 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,005 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,526 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,420 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,942 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,047 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,936 |
| Largest Countries By Category | 0 | - | 4.97 | 157,520 |
| Countries by Countries | 0 | - | 4.96 | 62,768 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,105 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,134 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,453 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,255 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,752,041 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,289 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,386 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,710 |
| Island Countries | 0 | - | 4.99 | 709,422 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,045,205 |
| Northernmost Countries | 0 | - | 4.99 | 360,135 |
| Countries of South America | 0 | - | 5.00 | 921,956 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,820 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,864,020 |
| "Land" Countries | 0 | - | 4.98 | 335,610 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,982 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,748 |
| Countries with Megacities | 0 | - | 4.99 | 249,919 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,589 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,831 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,906 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,820 |
| Countries by Official Language | 0 | - | 4.95 | 194,493 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,336 |
| Countries in their Native Language | 0 | - | 4.99 | 198,060 |
| Independence from Whom | 0 | - | 4.99 | 211,163 |
| Subdivisions by Country | 0 | - | 4.86 | 50,259 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,589 |
| Megadiverse Countries | 0 | - | 4.96 | 134,718 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,178 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,150 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,710 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,995 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,630 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,328 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,861 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,783 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,453 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,944 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,741 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,669 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,916 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,742 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,080 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,282 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,982 |
| World Map Quiz | 0 | - | 4.81 | 64,390 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,201 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,954 |
| Countries by Founding Story | 0 | - | 4.95 | 77,001 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,352 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,849 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,565 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,117 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,445 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,621 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,766 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,221 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,224 |
| Widest Countries East to West | 0 | - | 4.92 | 129,299 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,369 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,866 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,974 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,461 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,137 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,481 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,207 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,713 |
| Countries with Double Letters | 0 | - | 4.97 | 94,952 |
| Countries that End in N | 0 | - | 4.95 | 169,643 |
| Countries with Five Letters | 0 | - | 4.96 | 278,975 |
| Countries with Six Letters | 0 | - | 4.94 | 212,304 |
| Countries with W | 0 | - | 4.97 | 159,412 |
| Countries with Z | 0 | - | 4.98 | 289,639 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,624 |
| Countries That End in U | 0 | - | 4.95 | 120,360 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,647 |
| Countries that End in O | 0 | - | 4.92 | 159,150 |
| Countries that End in R | 0 | - | 4.87 | 118,690 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,472 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,197 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,027 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,033 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,613 |
| Countries That End in Y | 0 | - | 4.90 | 185,607 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,129 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,334 |
| Countries that End in I | 0 | - | 4.94 | 134,826 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,976 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,538 |
| Countries That End in NIA | 0 | - | 4.92 | 109,461 |
| Countries That End in BIA | 0 | - | 4.93 | 148,778 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,633 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,992 |
| Countries That End in RIA | 0 | - | 4.93 | 126,470 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,565 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,506 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,121 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,462 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,024 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,273 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,618 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,166 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,054 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,161 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,746 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,448 |
| Countries that End in L | 0 | - | 4.94 | 156,489 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,717 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,143 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,799 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,672 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,723 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,629 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,047 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,542 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,016 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,497 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,501 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,924 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.80 | 108,341 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,575 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,611 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,442,234 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,452 |
| One Border Countries | 0 | - | 4.98 | 467,292 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,819,911 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,611,602 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,454 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,234 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,566 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,207 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,282 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,836 |
| Countries by National Anthem | 0 | - | 4.93 | 71,165 |
| NATO Countries | 0 | - | 4.98 | 278,955 |
| EU Countries Quiz | 0 | - | 4.99 | 272,553 |
| Recently Independent Countries | 0 | - | 4.98 | 158,924 |
| French-Speaking Countries | 0 | - | 4.85 | 270,088 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,735 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,358 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,169 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,484 |
| German-Speaking Countries | 0 | - | 4.91 | 145,180 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,178 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,766 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,895 |
| Top Five Countries by Religion | 0 | - | 4.93 | 170,549 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,605 |
| Countries by Hottest Recorded Temperature | 0 | - | 4.92 | 112,284 |
| Countries by Coldest Recorded Temperature | 0 | - | 4.83 | 111,512 |
