| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,746 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,232 |
| Last Names by Country of Origin | 0 | - | 4.64 | 156,544 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,484,142 |
| Landlocked Countries | 0 | - | 4.99 | 420,818 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,329,122 |
| Countries by Emojis | 0 | - | 4.99 | 239,839 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 55,970 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,769,724 |
| Divided World City Name Puzzle #1 | 0 | - | 4.87 | 48,829 |
| Sahara Desert Countries | 0 | - | 4.98 | 163,893 |
| Himalayan Countries | 0 | - | 4.95 | 138,215 |
| Andean Countries | 0 | - | 4.95 | 84,330 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,555 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,439 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,179 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,605 |
| Danube Countries | 0 | - | 4.97 | 71,865 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 116,840 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,268 |
| Countries with the Worst Passports | 0 | - | 4.94 | 84,038 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,505 |
| European Landlocked Countries | 0 | - | 4.99 | 147,005 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,420 |
| Countries with the Most Species | 0 | - | 4.99 | 103,126 |
| Countries 197 to 205 | 0 | - | 4.89 | 70,571 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,523 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,669 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,459 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,136 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,534 |
| Countries in the Alps | 0 | - | 4.87 | 118,007 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 100,009 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 106,788 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,561 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,478 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,348 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,851 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,501 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,366 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,097 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,723 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,574 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,432 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,097 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,371 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,393 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,609 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,194 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,342 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,150 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,715 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,860 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 243,347 |
| World Countries - Blind Typing | 0 | - | 5.00 | 107,753 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,131 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,775 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,499 |
| Largest Countries By Category | 0 | - | 4.97 | 157,978 |
| Countries by Countries | 0 | - | 4.96 | 63,051 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,503 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,228 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,522 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,547 |
| Countries with the Most Muslims | 0 | - | 4.95 | 160,454 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,116 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 330,531 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,141 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 406,445 |
| Island Countries | 0 | - | 4.99 | 710,554 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,380,520 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,048,285 |
| Northernmost Countries | 0 | - | 4.99 | 361,383 |
| Countries of South America | 0 | - | 5.00 | 925,497 |
| Countries of Oceania | 0 | - | 5.00 | 1,054,581 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,872,904 |
| "Land" Countries | 0 | - | 4.98 | 336,849 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 130,756 |
| Countries by Alcohol Consumption | 0 | - | 4.43 | 205,441 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 261,220 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,051 |
| Name a Valid African Country | 0 | - | 4.98 | 154,135 |
| Most Common U.S. Last Names - Extreme | 0 | - | 4.94 | 174,567 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,446,203 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 380,451 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,570 |
| Countries with Megacities | 0 | - | 4.99 | 263,675 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,407 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,300 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 137,683 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,339 |
| Countries by Official Language | 0 | - | 4.95 | 194,999 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,035 |
| Countries in their Native Language | 0 | - | 4.99 | 198,507 |
| Independence from Whom | 0 | - | 4.99 | 211,786 |
| Subdivisions by Country | 0 | - | 4.86 | 50,378 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,128 |
| Megadiverse Countries | 0 | - | 4.96 | 134,909 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 131,857 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,280 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 125,860 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,067 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,957 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,502 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,270 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,958 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,582 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,048 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,411 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,806 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,118 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,894 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,266 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,429 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 110,800 |
| World Map Quiz | 0 | - | 4.81 | 64,918 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 156,556 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,225 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,845 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,130 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,852 |
| Countries With the Most Languages | 0 | - | 4.90 | 201,858 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,759 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,892 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,197 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,370 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,468 |
| Widest Countries East to West | 0 | - | 4.92 | 129,537 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,420 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,218 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,075 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,660 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,445 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,728 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,325 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,772 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 336,741 |
| Countries with Double Letters | 0 | - | 4.97 | 95,800 |
| Countries that End in N | 0 | - | 4.95 | 170,740 |
| Countries with Five Letters | 0 | - | 4.96 | 281,810 |
| Countries with Six Letters | 0 | - | 4.94 | 213,155 |
| Countries with W | 0 | - | 4.97 | 160,042 |
| Countries with Z | 0 | - | 4.98 | 291,000 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,381 |
| Countries That End in U | 0 | - | 4.95 | 120,679 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,176 |
| Countries that End in O | 0 | - | 4.92 | 159,396 |
| Countries that End in R | 0 | - | 4.87 | 118,868 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,639 |
| Countries Ending in "IA" | 0 | - | 4.99 | 208,779 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,446 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,298 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,981 |
| Countries That End in Y | 0 | - | 4.91 | 185,787 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,637 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,680 |
| Countries that End in I | 0 | - | 4.94 | 134,999 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 183,816 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,723 |
| Countries That End in NIA | 0 | - | 4.92 | 109,665 |
| Countries That End in BIA | 0 | - | 4.93 | 149,048 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,939 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,270 |
| Countries That End in RIA | 0 | - | 4.93 | 126,703 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,842 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,234 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,489 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,885 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,444 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,476 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,873 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,393 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,370 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,332 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,095 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 53,802 |
| Countries that End in L | 0 | - | 4.94 | 156,712 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,002 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,225 |
| City to Country Quiz #1 | 0 | - | 4.97 | 155,935 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,857 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 78,901 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,497 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,460 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 142,852 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,387 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 224,950 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,752 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,034 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,654 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,779 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,829,989 |
| One Border Countries | 0 | - | 4.98 | 468,785 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,625,317 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,752 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 267,884 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 121,951 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,426 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,575 |
| Countries by Population Range - Tile Select | 0 | - | 4.87 | 59,105 |
