| Countries of the World Quiz | 0 | - | 5.00 | 47,726,235 |
| Landlocked Countries | 0 | - | 4.99 | 423,760 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,791,597 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,319 |
| Himalayan Countries | 0 | - | 4.94 | 139,492 |
| Andean Countries | 0 | - | 4.94 | 85,039 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,235 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,428 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,791 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,103 |
| Danube Countries | 0 | - | 4.97 | 72,205 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,296 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,617 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,699 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,197 |
| European Landlocked Countries | 0 | - | 4.99 | 147,365 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,967 |
| Countries with the Most Species | 0 | - | 4.99 | 103,412 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,105 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,680 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,792 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,681 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,432 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,844 |
| Countries in the Alps | 0 | - | 4.87 | 118,478 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,051 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,430 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,806 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,805 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,732 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,094 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,909 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,664 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,290 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,015 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,760 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,625 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,383 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,633 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,717 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,361 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,472 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,200 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,347 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,878 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,642 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,375 |
| Largest Countries By Category | 0 | - | 4.97 | 158,532 |
| Countries by Countries | 0 | - | 4.96 | 63,434 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,999 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,345 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,618 |
| All Countries by Population With a Map | 0 | - | 4.99 | 110,264 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,201 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,897 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,163 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,080 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,491 |
| Island Countries | 0 | - | 4.99 | 711,737 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,324 |
| Northernmost Countries | 0 | - | 4.99 | 363,014 |
| Countries of South America | 0 | - | 5.00 | 929,893 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,121 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,028 |
| "Land" Countries | 0 | - | 4.98 | 337,858 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,299 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,425 |
| Countries with Megacities | 0 | - | 4.99 | 265,821 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,217 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,748 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,484 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,833 |
| Countries by Official Language | 0 | - | 4.95 | 195,624 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,006 |
| Countries in their Native Language | 0 | - | 4.99 | 199,393 |
| Independence from Whom | 0 | - | 4.99 | 212,542 |
| Subdivisions by Country | 0 | - | 4.87 | 50,525 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,062 |
| Megadiverse Countries | 0 | - | 4.96 | 135,153 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,430 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,455 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,338 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,160 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,368 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,696 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,731 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,468 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,744 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,206 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,081 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,158 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,322 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,056 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,470 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,596 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,797 |
| World Map Quiz | 0 | - | 4.81 | 65,374 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,233 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,527 |
| Countries within the Arctic Circle - Map Quiz | 0 | - | 4.84 | 64,371 |
| Countries by Founding Story | 0 | - | 4.95 | 77,527 |
| Countries by Road Signs | 0 | - | 4.98 | 54,196 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,629 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,653 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,313 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,934 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,181 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,302 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,517 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,577 |
| Tallest Countries North to South | 0 | - | 4.85 | 128,489 |
| Widest Countries East to West | 0 | - | 4.92 | 130,159 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,525 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,013 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,438 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,921 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,800 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,074 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,446 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,851 |
| Countries with Double Letters | 0 | - | 4.96 | 96,658 |
| Countries that End in N | 0 | - | 4.95 | 171,549 |
| Countries with Five Letters | 0 | - | 4.96 | 283,180 |
| Countries with Six Letters | 0 | - | 4.94 | 214,003 |
| Countries with W | 0 | - | 4.96 | 160,629 |
| Countries with Z | 0 | - | 4.98 | 291,941 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,994 |
| Countries That End in U | 0 | - | 4.95 | 121,013 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,781 |
| Countries that End in O | 0 | - | 4.92 | 159,666 |
| Countries that End in R | 0 | - | 4.87 | 119,067 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,829 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,458 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,930 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,646 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,567 |
| Countries That End in Y | 0 | - | 4.91 | 185,993 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,184 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,069 |
| Countries that End in I | 0 | - | 4.94 | 135,212 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,367 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,929 |
| Countries That End in NIA | 0 | - | 4.92 | 109,916 |
| Countries That End in BIA | 0 | - | 4.93 | 149,395 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,330 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,608 |
| Countries That End in RIA | 0 | - | 4.93 | 126,936 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,211 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,078 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,947 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,387 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,924 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,686 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,181 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,489 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,711 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,544 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,510 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,195 |
| Countries that End in L | 0 | - | 4.94 | 156,990 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,683 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,304 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,149 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,080 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,128 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,097 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,909 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,295 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,047 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,718 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,043 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,171 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,757 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,115 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,118 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,684 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,841,632 |
| One Border Countries | 0 | - | 4.98 | 470,912 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,642,543 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,575 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,117 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,605 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,428 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,726 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,971 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,394 |
| Majority Muslim Countries | 0 | - | 4.98 | 376,573 |
| Countries by National Anthem | 0 | - | 4.92 | 71,357 |
| NATO Countries | 0 | - | 4.98 | 282,461 |
| EU Countries Quiz | 0 | - | 4.99 | 276,651 |
| Recently Independent Countries | 0 | - | 4.98 | 159,701 |
| French-Speaking Countries | 0 | - | 4.85 | 271,285 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,974 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,178 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 290,244 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 275,618 |
| German-Speaking Countries | 0 | - | 4.92 | 145,889 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,109,098 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,105 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,402 |
