| Countries of the World Quiz | 0 | - | 5.00 | 47,258,698 |
| Landlocked Countries | 0 | - | 4.99 | 417,892 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,749,931 |
| Sahara Desert Countries | 0 | - | 4.98 | 162,483 |
| Himalayan Countries | 0 | - | 4.94 | 136,980 |
| Andean Countries | 0 | - | 4.95 | 83,716 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,959 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 124,312 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,635 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,206 |
| Danube Countries | 0 | - | 4.97 | 71,551 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,388 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,961 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,449 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,507 |
| European Landlocked Countries | 0 | - | 4.99 | 146,542 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,973 |
| Countries with the Most Species | 0 | - | 4.99 | 102,682 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,106 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,383 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,553 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,240 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,903 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,289 |
| Countries in the Alps | 0 | - | 4.86 | 117,528 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 95,026 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,168 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,349 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,873 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,977 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,374 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,142 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,098 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,902 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,466 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,427 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,283 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,841 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,108 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,128 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,978 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,986 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,511 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,391 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 241,774 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,960 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,919 |
| Largest Countries By Category | 0 | - | 4.97 | 157,470 |
| Countries by Countries | 0 | - | 4.96 | 62,744 |
| Country Flags with the Most White | 0 | - | 4.87 | 138,059 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,126 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,448 |
| All Countries by Population With a Map | 0 | - | 4.98 | 108,155 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 98,544 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,222 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 328,051 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 374,312 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 404,558 |
| Island Countries | 0 | - | 4.99 | 709,324 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,044,893 |
| Northernmost Countries | 0 | - | 4.99 | 360,001 |
| Countries of South America | 0 | - | 5.00 | 921,550 |
| Countries of Oceania | 0 | - | 5.00 | 1,049,329 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,863,110 |
| "Land" Countries | 0 | - | 4.98 | 335,522 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,373,384 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,667 |
| Countries with Megacities | 0 | - | 4.99 | 249,749 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,510 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,782 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,833 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,756 |
| Countries by Official Language | 0 | - | 4.95 | 194,443 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 295,264 |
| Countries in their Native Language | 0 | - | 4.99 | 198,003 |
| Independence from Whom | 0 | - | 4.99 | 211,109 |
| Subdivisions by Country | 0 | - | 4.86 | 50,249 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,552 |
| Megadiverse Countries | 0 | - | 4.96 | 134,691 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,134 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,143 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,696 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,987 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,588 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,308 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,810 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,736 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,445 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,904 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,632 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,653 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,847 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,725 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,026 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,277 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,909 |
| World Map Quiz | 0 | - | 4.81 | 64,343 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 155,056 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,912 |
| Countries by Founding Story | 0 | - | 4.95 | 76,982 |
| Countries by Road Signs | 0 | - | 4.98 | 53,555 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,298 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,812 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,538 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,049 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,420 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,593 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,742 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,210 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,200 |
| Widest Countries East to West | 0 | - | 4.92 | 129,266 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,359 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,827 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,965 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,438 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,112 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,462 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,187 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,706 |
| Countries with Double Letters | 0 | - | 4.97 | 94,861 |
| Countries that End in N | 0 | - | 4.95 | 169,412 |
| Countries with Five Letters | 0 | - | 4.96 | 277,912 |
| Countries with Six Letters | 0 | - | 4.94 | 212,205 |
| Countries with W | 0 | - | 4.97 | 159,347 |
| Countries with Z | 0 | - | 4.98 | 289,554 |
| Countries with Letters Missing | 0 | - | 4.96 | 185,551 |
| Countries That End in U | 0 | - | 4.95 | 120,326 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,563 |
| Countries that End in O | 0 | - | 4.92 | 159,129 |
| Countries that End in R | 0 | - | 4.87 | 118,670 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,457 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,130 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,989 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,985 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,581 |
| Countries That End in Y | 0 | - | 4.90 | 185,588 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,078 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,297 |
| Countries that End in I | 0 | - | 4.94 | 134,809 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,924 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,518 |
| Countries That End in NIA | 0 | - | 4.92 | 109,438 |
| Countries That End in BIA | 0 | - | 4.93 | 148,739 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,602 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,959 |
| Countries That End in RIA | 0 | - | 4.93 | 126,446 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,544 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,432 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,079 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,421 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,999 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,260 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,589 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,131 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,031 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,141 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,717 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,403 |
| Countries that End in L | 0 | - | 4.94 | 156,464 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 213,588 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,135 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,786 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,655 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,705 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 248,552 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 199,996 |
| Five Least Populated Countries by Continent | 0 | - | 4.96 | 142,507 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 162,970 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,445 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,388 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 70,905 |
| Top 15 Countries that Produce the Most Tea | 0 | - | 4.81 | 108,332 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,567 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,592 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,441,822 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 379,355 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,818,744 |
| One Border Countries | 0 | - | 4.98 | 467,149 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,610,285 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,212 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.95 | 86,425 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,165 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,533 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,184 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,236 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 58,800 |
| Majority Muslim Countries | 0 | - | 4.98 | 372,654 |
| Countries by National Anthem | 0 | - | 4.92 | 71,158 |
| NATO Countries | 0 | - | 4.98 | 278,805 |
| EU Countries Quiz | 0 | - | 4.99 | 272,399 |
| Recently Independent Countries | 0 | - | 4.98 | 158,793 |
| French-Speaking Countries | 0 | - | 4.85 | 270,044 |
| Natural Features of Countries #1 | 0 | - | 4.87 | 83,719 |
| Countries That Use the Euro | 0 | - | 4.95 | 104,302 |
| Countries with the Most Military Troops | 0 | - | 4.95 | 287,015 |
| Countries with Nuclear Weapons | 0 | - | 4.86 | 271,281 |
| German-Speaking Countries | 0 | - | 4.91 | 145,034 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,096,531 |
| Countries with Wild Tigers | 0 | - | 4.96 | 136,159 |
| Countries with Wild Penguins | 0 | - | 4.94 | 99,742 |
