| Countries of the World Quiz | 0 | - | 5.00 | 48,014,119 |
| Countries by National Anthem | 0 | - | 4.92 | 71,451 |
| Landlocked Countries | 0 | - | 4.99 | 427,805 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,816,306 |
| Sahara Desert Countries | 0 | - | 4.98 | 167,176 |
| Himalayan Countries | 0 | - | 4.93 | 141,059 |
| Andean Countries | 0 | - | 4.94 | 85,919 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 65,028 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,660 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,575 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,775 |
| Danube Countries | 0 | - | 4.97 | 72,620 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,887 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 87,028 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,556 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 151,027 |
| European Landlocked Countries | 0 | - | 4.99 | 147,830 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,622 |
| Countries with the Most Species | 0 | - | 4.99 | 103,679 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,730 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,837 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,981 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,967 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,713 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,182 |
| Countries in the Alps | 0 | - | 4.87 | 119,063 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 103,147 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,266 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,101 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,231 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,200 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,435 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,651 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 54,043 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,542 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,357 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,986 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,856 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,717 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,970 |
| Countries with the Most Grassland | 0 | - | 4.94 | 78,072 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,287 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,771 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 76,844 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,924 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 246,607 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,676 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,648 |
| Largest Countries By Category | 0 | - | 4.97 | 159,207 |
| Countries by Countries | 0 | - | 4.97 | 63,865 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,541 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,464 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,722 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,303 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 337,135 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 377,211 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,707 |
| Island Countries | 0 | - | 4.99 | 713,256 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,056,847 |
| Northernmost Countries | 0 | - | 4.99 | 364,884 |
| Countries of South America | 0 | - | 5.00 | 935,069 |
| Countries of Oceania | 0 | - | 5.00 | 1,066,537 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,895,015 |
| "Land" Countries | 0 | - | 4.98 | 339,204 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,398,752 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,686 |
| Countries with Megacities | 0 | - | 4.99 | 268,235 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 201,314 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,421 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,666 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,548 |
| Countries by Official Language | 0 | - | 4.95 | 196,351 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 298,112 |
| Countries in their Native Language | 0 | - | 4.99 | 200,056 |
| Independence from Whom | 0 | - | 4.99 | 213,568 |
| Subdivisions by Country | 0 | - | 4.87 | 50,684 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,774 |
| Megadiverse Countries | 0 | - | 4.96 | 149,839 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,228 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,598 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,864 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,274 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,568 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,967 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,385 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,663 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,223 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,302 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,917 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,529 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,534 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,254 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,678 |
| Most Dispersed Island Nations | 0 | - | 4.96 | 72,017 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,921 |
| World Map Quiz | 0 | - | 4.81 | 65,992 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 160,229 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,866 |
| Countries by Founding Story | 0 | - | 4.95 | 77,956 |
| Countries by Road Signs | 0 | - | 4.98 | 54,503 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,654 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,306 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,777 |
| Countries With the Most Languages | 0 | - | 4.90 | 204,086 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,628 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,745 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,910 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,791 |
| Tallest Countries North to South | 0 | - | 4.85 | 131,023 |
| Widest Countries East to West | 0 | - | 4.92 | 130,915 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,640 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,483 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,591 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,208 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,503 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,664 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,555 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,934 |
| Countries with Double Letters | 0 | - | 4.96 | 97,806 |
| Countries that End in N | 0 | - | 4.95 | 172,804 |
| Countries with Five Letters | 0 | - | 4.96 | 284,873 |
| Countries with Six Letters | 0 | - | 4.94 | 215,141 |
| Countries with W | 0 | - | 4.96 | 161,444 |
| Countries with Z | 0 | - | 4.98 | 293,198 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,816 |
| Countries That End in U | 0 | - | 4.95 | 121,465 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,568 |
| Countries that End in O | 0 | - | 4.92 | 160,430 |
| Countries that End in R | 0 | - | 4.87 | 119,319 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 156,091 |
| Countries Ending in "IA" | 0 | - | 4.99 | 210,283 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 187,762 |
| Countries by Last Two Letters | 0 | - | 4.85 | 136,308 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 143,992 |
| Countries That End in Y | 0 | - | 4.91 | 186,212 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 199,535 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,496 |
| Countries that End in I | 0 | - | 4.94 | 135,462 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 185,472 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,188 |
| Countries That End in NIA | 0 | - | 4.92 | 110,204 |
| Countries That End in BIA | 0 | - | 4.93 | 149,796 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 168,012 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,961 |
| Countries That End in RIA | 0 | - | 4.93 | 127,203 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,600 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 229,093 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,481 |
| Divided Country Name Puzzle #3 | 0 | - | 4.93 | 126,942 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,498 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,965 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,529 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,625 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 126,135 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,787 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,984 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,695 |
| Countries that End in L | 0 | - | 4.94 | 157,303 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,845 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,394 |
| City to Country Quiz #1 | 0 | - | 4.96 | 157,922 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,193 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,580 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,772 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,393 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,578 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,487 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,277 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,368 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,318 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,987 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,897 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,395 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,456,987 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 383,250 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,855,951 |
| One Border Countries | 0 | - | 4.98 | 472,902 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,662,886 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,787 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,522 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,637 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,902 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 113,277 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,442 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,774 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,728 |
| NATO Countries | 0 | - | 4.98 | 284,309 |
| EU Countries Quiz | 0 | - | 4.99 | 279,235 |
| Recently Independent Countries | 0 | - | 4.98 | 160,594 |
| French-Speaking Countries | 0 | - | 4.85 | 272,014 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,283 |
| Countries That Use the Euro | 0 | - | 4.95 | 107,407 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 292,188 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 278,377 |
| German-Speaking Countries | 0 | - | 4.91 | 146,118 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,129,618 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,822 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,940 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 454,323 |
| Solve the Secret Country #1 | 0 | - | 4.93 | 168,918 |
