| Countries of the World Quiz | 0 | - | 5.00 | 47,386,631 |
| Landlocked Countries | 0 | - | 4.99 | 419,626 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,761,347 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,278 |
| Himalayan Countries | 0 | - | 4.95 | 137,718 |
| Andean Countries | 0 | - | 4.95 | 84,076 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,319 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,843 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,948 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,432 |
| Danube Countries | 0 | - | 4.97 | 71,729 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,655 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,125 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,770 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,855 |
| European Landlocked Countries | 0 | - | 4.99 | 146,856 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,224 |
| Countries with the Most Species | 0 | - | 4.99 | 102,992 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,385 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,453 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,615 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,363 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,039 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,431 |
| Countries in the Alps | 0 | - | 4.87 | 117,804 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,210 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,516 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,464 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,197 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,182 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,768 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,367 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,257 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,016 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,620 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,519 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,367 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,986 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,254 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,271 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,325 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,108 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,615 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,642 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 242,690 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,415 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,035 |
| Largest Countries By Category | 0 | - | 4.97 | 157,770 |
| Countries by Countries | 0 | - | 4.96 | 62,917 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,317 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,179 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,485 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,781 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,715 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,398 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 329,589 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,797 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 405,613 |
| Island Countries | 0 | - | 4.99 | 710,049 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,046,813 |
| Northernmost Countries | 0 | - | 4.99 | 360,808 |
| Countries of South America | 0 | - | 5.00 | 923,907 |
| Countries of Oceania | 0 | - | 5.00 | 1,052,468 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,868,800 |
| "Land" Countries | 0 | - | 4.98 | 335,961 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,377,294 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,223 |
| Countries with Megacities | 0 | - | 4.99 | 262,223 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,067 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,105 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,370 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,139 |
| Countries by Official Language | 0 | - | 4.95 | 194,777 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,717 |
| Countries in their Native Language | 0 | - | 4.99 | 198,322 |
| Independence from Whom | 0 | - | 4.99 | 211,495 |
| Subdivisions by Country | 0 | - | 4.86 | 50,317 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,836 |
| Megadiverse Countries | 0 | - | 4.96 | 134,816 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,649 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,216 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,791 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,035 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,797 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,423 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,068 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,884 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,526 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,011 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,149 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,753 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,032 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,824 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,191 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,367 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,385 |
| World Map Quiz | 0 | - | 4.81 | 64,704 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,918 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,106 |
| Countries by Founding Story | 0 | - | 4.95 | 77,129 |
| Countries by Road Signs | 0 | - | 4.98 | 53,722 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,644 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 105,010 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,738 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,543 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,604 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,755 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,892 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,307 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,347 |
| Widest Countries East to West | 0 | - | 4.92 | 129,437 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,402 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,046 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,022 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,572 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,308 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,623 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,273 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,739 |
| Countries with Double Letters | 0 | - | 4.97 | 95,216 |
| Countries that End in N | 0 | - | 4.95 | 170,210 |
| Countries with Five Letters | 0 | - | 4.96 | 280,891 |
| Countries with Six Letters | 0 | - | 4.94 | 212,653 |
| Countries with W | 0 | - | 4.97 | 159,606 |
| Countries with Z | 0 | - | 4.98 | 290,211 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,849 |
| Countries That End in U | 0 | - | 4.95 | 120,452 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,864 |
| Countries that End in O | 0 | - | 4.92 | 159,241 |
| Countries that End in R | 0 | - | 4.87 | 118,761 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,539 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,459 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,207 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,146 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,742 |
| Countries That End in Y | 0 | - | 4.91 | 185,675 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,377 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,509 |
| Countries that End in I | 0 | - | 4.94 | 134,905 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,381 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,615 |
| Countries That End in NIA | 0 | - | 4.92 | 109,558 |
| Countries That End in BIA | 0 | - | 4.93 | 148,906 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,803 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,129 |
| Countries That End in RIA | 0 | - | 4.93 | 126,583 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,714 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,898 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,322 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,700 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,228 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,378 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,733 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,305 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,214 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,234 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,910 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,632 |
| Countries that End in L | 0 | - | 4.94 | 156,586 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 214,355 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,167 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,875 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,772 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,819 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,916 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,279 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,712 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,219 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,709 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,636 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,983 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,614 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,712 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,444,343 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,977 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,825,354 |
| One Border Countries | 0 | - | 4.98 | 468,058 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,618,629 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,326 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,626 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,578 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,769 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,329 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,450 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,007 |
| Majority Muslim Countries | 0 | - | 4.98 | 373,704 |
| Countries by National Anthem | 0 | - | 4.92 | 71,204 |
| NATO Countries | 0 | - | 4.98 | 279,720 |
| EU Countries Quiz | 0 | - | 4.99 | 273,391 |
| Recently Independent Countries | 0 | - | 4.98 | 159,112 |
| French-Speaking Countries | 0 | - | 4.85 | 270,330 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,783 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,775 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,824 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 272,419 |
| German-Speaking Countries | 0 | - | 4.91 | 145,435 |
| Word Scramble - Countries | 0 | - | 4.87 | 2,099,828 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,737 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,106 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 450,036 |
