| Countries of the World Quiz | 0 | - | 5.00 | 47,923,126 |
| Landlocked Countries | 0 | - | 4.99 | 426,609 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,808,094 |
| Sahara Desert Countries | 0 | - | 4.98 | 166,583 |
| Himalayan Countries | 0 | - | 4.93 | 140,518 |
| Andean Countries | 0 | - | 4.94 | 85,638 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,771 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 127,238 |
| Coffee Producing Countries | 0 | - | 4.83 | 68,326 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,560 |
| Danube Countries | 0 | - | 4.97 | 72,474 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 117,690 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,903 |
| Countries with the Worst Passports | 0 | - | 4.93 | 85,278 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,743 |
| European Landlocked Countries | 0 | - | 4.99 | 147,676 |
| Partially Recognized Countries | 0 | - | 4.98 | 107,411 |
| Countries with the Most Species | 0 | - | 4.99 | 103,607 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,516 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,791 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,916 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,881 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,621 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 58,078 |
| Countries in the Alps | 0 | - | 4.87 | 118,861 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,808 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 108,006 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 79,014 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 97,097 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 117,042 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,327 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 101,474 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,926 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,468 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,243 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,917 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.91 | 41,788 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,620 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,854 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,953 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 120,010 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,663 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 75,671 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,759 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 245,971 |
| World Countries - Blind Typing | 0 | - | 5.00 | 109,317 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,557 |
| Largest Countries By Category | 0 | - | 4.97 | 158,956 |
| Countries by Countries | 0 | - | 4.97 | 63,717 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,338 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,427 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,689 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,473 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 89,157 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 335,998 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,867 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 410,023 |
| Island Countries | 0 | - | 4.99 | 712,773 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,055,428 |
| Northernmost Countries | 0 | - | 4.99 | 364,307 |
| Countries of South America | 0 | - | 5.00 | 933,467 |
| Countries of Oceania | 0 | - | 5.00 | 1,064,457 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,891,087 |
| "Land" Countries | 0 | - | 4.98 | 338,583 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,395,376 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 175,334 |
| Countries with Megacities | 0 | - | 4.99 | 267,490 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,993 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 114,235 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 139,328 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 82,337 |
| Countries by Official Language | 0 | - | 4.95 | 196,124 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,788 |
| Countries in their Native Language | 0 | - | 4.99 | 199,847 |
| Independence from Whom | 0 | - | 4.99 | 213,233 |
| Subdivisions by Country | 0 | - | 4.87 | 50,642 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,564 |
| Megadiverse Countries | 0 | - | 4.96 | 145,555 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 133,038 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,557 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,753 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,239 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 164,357 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,891 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 95,187 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,595 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 96,129 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,275 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,645 |
| Landmarks of Countries #1 | 0 | - | 4.89 | 108,435 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,466 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,179 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,607 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,917 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 112,541 |
| World Map Quiz | 0 | - | 4.81 | 65,826 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 159,567 |
| Smallest Countries with at Least One Border | 0 | - | 4.88 | 107,759 |
| Countries by Founding Story | 0 | - | 4.95 | 77,859 |
| Countries by Road Signs | 0 | - | 4.98 | 54,394 |
| Southernmost Countries of the World | 0 | - | 4.99 | 229,388 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 106,159 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,623 |
| Countries With the Most Languages | 0 | - | 4.90 | 203,743 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,488 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,607 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,793 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,730 |
| Tallest Countries North to South | 0 | - | 4.85 | 130,854 |
| Widest Countries East to West | 0 | - | 4.92 | 130,778 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,617 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,313 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,536 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 95,103 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 149,047 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,543 |
| Countries by Contribution to UN Budget | 0 | - | 4.88 | 77,518 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,909 |
| Countries with Double Letters | 0 | - | 4.96 | 97,255 |
| Countries that End in N | 0 | - | 4.95 | 172,346 |
| Countries with Five Letters | 0 | - | 4.96 | 284,230 |
| Countries with Six Letters | 0 | - | 4.94 | 214,661 |
| Countries with W | 0 | - | 4.96 | 161,075 |
| Countries with Z | 0 | - | 4.98 | 292,641 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,419 |
| Countries That End in U | 0 | - | 4.95 | 121,262 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 135,219 |
| Countries that End in O | 0 | - | 4.92 | 160,276 |
| Countries that End in R | 0 | - | 4.87 | 119,222 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,983 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,973 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 173,680 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,912 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,932 |
| Countries That End in Y | 0 | - | 4.91 | 186,118 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,623 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,333 |
| Countries that End in I | 0 | - | 4.94 | 135,364 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,755 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 96,094 |
| Countries That End in NIA | 0 | - | 4.92 | 110,102 |
| Countries That End in BIA | 0 | - | 4.93 | 149,649 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,825 |
| Countries Whose Names Start with Saint | 0 | - | 4.88 | 119,816 |
| Countries That End in RIA | 0 | - | 4.93 | 127,094 |
| Most Common Words in Official Country Names | 0 | - | 4.85 | 111,454 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,765 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 134,267 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,728 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 92,280 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,850 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,374 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,557 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,974 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,678 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,802 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,496 |
| Countries that End in L | 0 | - | 4.94 | 157,187 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 218,247 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,362 |
| City to Country Quiz #1 | 0 | - | 4.97 | 157,604 |
| City to Country Quiz #3 | 0 | - | 4.88 | 120,059 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,499 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,538 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 201,221 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,472 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,337 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 226,075 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,268 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,270 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,959 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,853 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,298 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,455,044 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 382,726 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,850,847 |
| One Border Countries | 0 | - | 4.98 | 472,248 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,656,288 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,726 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,404 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 269,367 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,737 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,948 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.91 | 94,299 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,675 |
| Majority Muslim Countries | 0 | - | 4.98 | 378,034 |
| Countries by National Anthem | 0 | - | 4.92 | 71,421 |
| NATO Countries | 0 | - | 4.98 | 283,702 |
| EU Countries Quiz | 0 | - | 4.99 | 278,302 |
| Recently Independent Countries | 0 | - | 4.98 | 160,421 |
| French-Speaking Countries | 0 | - | 4.85 | 271,772 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 84,181 |
| Countries That Use the Euro | 0 | - | 4.95 | 106,993 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 291,629 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 277,315 |
| German-Speaking Countries | 0 | - | 4.92 | 146,057 |
| Word Scramble - Countries | 0 | - | 4.88 | 2,126,575 |
| Countries with Wild Tigers | 0 | - | 4.96 | 137,641 |
| Countries with Wild Penguins | 0 | - | 4.94 | 100,760 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 453,824 |
