| Countries of the World Quiz | 0 | - | 5.00 | 47,582,451 |
| Landlocked Countries | 0 | - | 4.99 | 421,960 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,330,553 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,778,681 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,444 |
| Himalayan Countries | 0 | - | 4.94 | 138,718 |
| Andean Countries | 0 | - | 4.93 | 84,602 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,799 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,818 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,426 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,804 |
| Danube Countries | 0 | - | 4.97 | 72,009 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,016 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,422 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,305 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,785 |
| European Landlocked Countries | 0 | - | 4.99 | 147,146 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,644 |
| Countries with the Most Species | 0 | - | 4.99 | 103,244 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,764 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,594 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,722 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,542 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,226 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,660 |
| Countries in the Alps | 0 | - | 4.87 | 118,202 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,127 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,037 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,644 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,598 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,511 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,946 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,672 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,491 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,178 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,848 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,652 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,527 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,224 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,468 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,520 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,907 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,308 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 63,786 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,076 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,936 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,110 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,232 |
| Largest Countries By Category | 0 | - | 4.97 | 158,211 |
| Countries by Countries | 0 | - | 4.96 | 63,221 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,684 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,287 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,565 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,675 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,568 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,495 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,246 |
| Island Countries | 0 | - | 4.99 | 711,049 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,049,861 |
| Northernmost Countries | 0 | - | 4.99 | 361,961 |
| Countries of South America | 0 | - | 5.00 | 927,327 |
| Countries of Oceania | 0 | - | 5.00 | 1,056,873 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,877,259 |
| "Land" Countries | 0 | - | 4.98 | 337,337 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,525 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,383,658 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,891 |
| Countries with Megacities | 0 | - | 4.99 | 264,563 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,739 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,468 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 137,997 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,541 |
| Countries by Official Language | 0 | - | 4.95 | 195,243 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,369 |
| Countries in their Native Language | 0 | - | 4.99 | 199,042 |
| Independence from Whom | 0 | - | 4.99 | 212,090 |
| Subdivisions by Country | 0 | - | 4.86 | 50,430 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,729 |
| Megadiverse Countries | 0 | - | 4.96 | 135,011 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,086 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,347 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,234 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,100 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,136 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,596 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,465 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,031 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,657 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,145 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,667 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,881 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,202 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,964 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,347 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,496 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,177 |
| World Map Quiz | 0 | - | 4.81 | 65,083 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 130,985 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,293 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,347 |
| 20 Random Country Flags | 0 | - | 4.99 | 614,470 |
| Countries by Founding Story | 0 | - | 4.95 | 77,365 |
| Countries by Road Signs | 0 | - | 4.98 | 54,008 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,093 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,278 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,996 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,187 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,890 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,009 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,297 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,438 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,571 |
| Widest Countries East to West | 0 | - | 4.92 | 129,646 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,456 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,378 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,121 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,767 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,598 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,871 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,371 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,796 |
| Countries with Double Letters | 0 | - | 4.96 | 96,233 |
| Countries that End in N | 0 | - | 4.95 | 171,110 |
| Countries with Five Letters | 0 | - | 4.96 | 282,447 |
| Countries with Six Letters | 0 | - | 4.94 | 213,544 |
| Countries with W | 0 | - | 4.97 | 160,318 |
| Countries with Z | 0 | - | 4.98 | 291,433 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,689 |
| Countries That End in U | 0 | - | 4.95 | 120,849 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,451 |
| Countries that End in O | 0 | - | 4.92 | 159,505 |
| Countries that End in R | 0 | - | 4.87 | 118,962 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,728 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,073 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,687 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,467 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,392 |
| Countries That End in Y | 0 | - | 4.91 | 185,867 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,906 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,847 |
| Countries that End in I | 0 | - | 4.94 | 135,087 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,090 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,820 |
| Countries That End in NIA | 0 | - | 4.92 | 109,781 |
| Countries That End in BIA | 0 | - | 4.93 | 149,190 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,114 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,419 |
| Countries That End in RIA | 0 | - | 4.93 | 126,802 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,014 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,586 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,689 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,109 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,665 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,573 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,019 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,439 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,515 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,411 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,273 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,973 |
| Countries that End in L | 0 | - | 4.94 | 156,835 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,720 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,261 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,017 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,948 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,993 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,733 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,642 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,985 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,531 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,422 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,850 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,099 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,705 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,869 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,938 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,204 |
| Name a Valid African Country | 0 | - | 4.98 | 154,338 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,009 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,157 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,971 |
| World City Nicknames Quiz | 0 | - | 4.16 | 35,609 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,834,721 |
| One Border Countries | 0 | - | 4.98 | 469,875 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,632,136 |
| Category Elimination - European Countries #1 | 0 | - | 4.89 | 90,343 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,462 |
| Countries that Beat Australia | 0 | - | 4.92 | 93,002 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,929 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,184 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,147 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,554 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,729 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,218 |
| Majority Muslim Countries | 0 | - | 4.98 | 375,485 |
| Countries by National Anthem | 0 | - | 4.93 | 71,288 |
| NATO Countries | 0 | - | 4.98 | 281,513 |
| EU Countries Quiz | 0 | - | 4.99 | 275,473 |
| Recently Independent Countries | 0 | - | 4.98 | 159,472 |
| French-Speaking Countries | 0 | - | 4.85 | 270,843 |
