| Countries of the World Quiz | 0 | - | 5.00 | 47,615,037 |
| Landlocked Countries | 0 | - | 4.99 | 422,384 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,094 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,781,718 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,720 |
| Himalayan Countries | 0 | - | 4.95 | 138,920 |
| Andean Countries | 0 | - | 4.93 | 84,733 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,937 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,996 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,549 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,884 |
| Danube Countries | 0 | - | 4.97 | 72,072 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,091 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,474 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,396 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,886 |
| European Landlocked Countries | 0 | - | 4.99 | 147,197 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,727 |
| Countries with the Most Species | 0 | - | 4.99 | 103,280 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,842 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,617 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,740 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,576 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,268 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,711 |
| Countries in the Alps | 0 | - | 4.87 | 118,273 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,379 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,115 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,694 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,636 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,562 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,985 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,722 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,546 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,204 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,895 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,681 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,550 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,261 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,515 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,573 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,002 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,346 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,271 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,144 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,139 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,245 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,268 |
| Largest Countries By Category | 0 | - | 4.97 | 158,288 |
| Countries by Countries | 0 | - | 4.96 | 63,281 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,747 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,304 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,577 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,712 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,907 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,628 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,592 |
| Island Countries | 0 | - | 4.99 | 711,185 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,368 |
| Northernmost Countries | 0 | - | 4.99 | 362,154 |
| Countries of South America | 0 | - | 5.00 | 927,945 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,674 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,584 |
| "Land" Countries | 0 | - | 4.98 | 337,452 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,595 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,677 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,011 |
| Countries with Megacities | 0 | - | 4.99 | 264,841 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,841 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,530 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,100 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,610 |
| Countries by Official Language | 0 | - | 4.95 | 195,327 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,490 |
| Countries in their Native Language | 0 | - | 4.99 | 199,123 |
| Independence from Whom | 0 | - | 4.99 | 212,197 |
| Subdivisions by Country | 0 | - | 4.87 | 50,447 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,801 |
| Megadiverse Countries | 0 | - | 4.96 | 135,052 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,172 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,381 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,257 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,122 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,184 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,618 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,528 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,058 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,680 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,160 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,753 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,912 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,229 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,988 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,375 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,514 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,300 |
| World Map Quiz | 0 | - | 4.81 | 65,147 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,232 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,489 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,390 |
| 20 Random Country Flags | 0 | - | 4.99 | 614,957 |
| Countries by Founding Story | 0 | - | 4.95 | 77,411 |
| Countries by Road Signs | 0 | - | 4.98 | 54,052 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,167 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,323 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,032 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,316 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,933 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,049 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,331 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,469 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,603 |
| Widest Countries East to West | 0 | - | 4.92 | 129,691 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,465 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,428 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,136 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,795 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,626 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,908 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,387 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,808 |
| Countries with Double Letters | 0 | - | 4.96 | 96,310 |
| Countries that End in N | 0 | - | 4.95 | 171,205 |
| Countries with Five Letters | 0 | - | 4.96 | 282,644 |
| Countries with Six Letters | 0 | - | 4.94 | 213,641 |
| Countries with W | 0 | - | 4.97 | 160,388 |
| Countries with Z | 0 | - | 4.98 | 291,555 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,760 |
| Countries That End in U | 0 | - | 4.95 | 120,877 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,519 |
| Countries that End in O | 0 | - | 4.92 | 159,535 |
| Countries that End in R | 0 | - | 4.87 | 118,981 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,752 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,165 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,731 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,500 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,422 |
| Countries That End in Y | 0 | - | 4.91 | 185,896 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,978 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,896 |
| Countries that End in I | 0 | - | 4.94 | 135,117 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,151 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,840 |
| Countries That End in NIA | 0 | - | 4.92 | 109,807 |
| Countries That End in BIA | 0 | - | 4.93 | 149,237 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,147 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,450 |
| Countries That End in RIA | 0 | - | 4.93 | 126,829 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,044 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,714 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,753 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,176 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,732 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,595 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,056 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,457 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,553 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,445 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,323 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,018 |
| Countries that End in L | 0 | - | 4.94 | 156,866 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,930 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,278 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,048 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,978 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,022 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,815 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,701 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,161 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,880 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,512 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,898 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,118 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,714 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,893 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,417 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,262 |
| Name a Valid African Country | 0 | - | 4.98 | 154,405 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,089 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,838 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,125 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,618 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,289 |
| One Border Countries | 0 | - | 4.98 | 470,087 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,634,742 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,412 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,491 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,044 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,976 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,291 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,206 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,604 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,779 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,252 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,739 |
| Countries by National Anthem | 0 | - | 4.93 | 71,304 |
| NATO Countries | 0 | - | 4.98 | 281,714 |
| EU Countries Quiz | 0 | - | 4.99 | 275,744 |
| Recently Independent Countries | 0 | - | 4.98 | 159,515 |
| French-Speaking Countries | 0 | - | 4.85 | 270,946 |
