| Countries of the World Quiz | 0 | - | 5.00 | 47,738,982 |
| Landlocked Countries | 0 | - | 4.99 | 423,903 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,333,426 |
| Countries by Emojis | 0 | - | 4.99 | 241,214 |
| Countries With One Word And Two O's | 0 | - | 4.92 | 56,362 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,792,667 |
| Sahara Desert Countries | 0 | - | 4.98 | 165,386 |
| Himalayan Countries | 0 | - | 4.94 | 139,554 |
| Andean Countries | 0 | - | 4.94 | 85,078 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 64,259 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,481 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,826 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 66,133 |
| Danube Countries | 0 | - | 4.97 | 72,216 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,316 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,635 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,724 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 150,230 |
| European Landlocked Countries | 0 | - | 4.99 | 147,389 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,995 |
| Countries with the Most Species | 0 | - | 4.99 | 103,426 |
| Countries 197 to 205 | 0 | - | 4.90 | 71,119 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,684 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,797 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,705 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,442 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,855 |
| Countries in the Alps | 0 | - | 4.87 | 118,503 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 102,101 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,469 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,815 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,818 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,754 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 96,098 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,930 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,678 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,305 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 63,024 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,766 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,633 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,394 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,640 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,730 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,391 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,477 |
| Countries that Host the Most Refugees | 0 | - | 4.97 | 65,282 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,372 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,950 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,685 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,386 |
| Largest Countries By Category | 0 | - | 4.97 | 158,555 |
| Countries by Countries | 0 | - | 4.96 | 63,448 |
| Country Flags with the Most White | 0 | - | 4.85 | 139,023 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,351 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,625 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,213 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,915 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 333,312 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 376,132 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 408,612 |
| Island Countries | 0 | - | 4.99 | 711,807 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,052,541 |
| Northernmost Countries | 0 | - | 4.99 | 363,122 |
| Countries of South America | 0 | - | 5.00 | 930,057 |
| Countries of Oceania | 0 | - | 5.00 | 1,060,389 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,883,642 |
| "Land" Countries | 0 | - | 4.98 | 337,906 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,856 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,490 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,975 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,753 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,388,720 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 49,185 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,491 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,409 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,460 |
| Countries with Megacities | 0 | - | 4.99 | 265,908 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 200,255 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,759 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,512 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,860 |
| Countries by Official Language | 0 | - | 4.95 | 195,660 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 297,142 |
| Countries in their Native Language | 0 | - | 4.99 | 199,431 |
| Independence from Whom | 0 | - | 4.99 | 212,592 |
| Subdivisions by Country | 0 | - | 4.87 | 50,540 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 133,097 |
| Megadiverse Countries | 0 | - | 4.96 | 135,159 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,456 |
| Countries Producing the Most Sugarcane | 0 | - | 4.94 | 55,464 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 126,349 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,166 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,379 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,706 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,764 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,473 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,749 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,208 |
| Countries by Sports League Revenue | 0 | - | 4.95 | 78,104 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 108,274 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,334 |
| Countries with the Highest HDI | 0 | - | 4.95 | 137,063 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,479 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,604 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,864 |
| World Map Quiz | 0 | - | 4.81 | 65,388 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,471 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 158,316 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,535 |
| Countries by Founding Story | 0 | - | 4.95 | 77,562 |
| Countries by Road Signs | 0 | - | 4.98 | 54,213 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,723 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,699 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,351 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,994 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.96 | 111,210 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,332 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,544 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,591 |
| Tallest Countries North to South | 0 | - | 4.86 | 129,258 |
| Widest Countries East to West | 0 | - | 4.92 | 130,217 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,535 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 187,037 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,443 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,938 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,815 |
| Countries with the Most Desert | 0 | - | 4.93 | 128,137 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,449 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,854 |
| Countries with Double Letters | 0 | - | 4.96 | 96,697 |
| Countries that End in N | 0 | - | 4.95 | 171,579 |
| Countries with Five Letters | 0 | - | 4.96 | 283,232 |
| Countries with Six Letters | 0 | - | 4.94 | 214,038 |
| Countries with W | 0 | - | 4.96 | 160,651 |
| Countries with Z | 0 | - | 4.98 | 291,987 |
| Countries with Letters Missing | 0 | - | 4.96 | 187,018 |
| Countries That End in U | 0 | - | 4.95 | 121,032 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.97 | 134,808 |
| Countries that End in O | 0 | - | 4.92 | 159,678 |
| Countries that End in R | 0 | - | 4.87 | 119,081 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,835 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,482 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,941 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,655 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,585 |
| Countries That End in Y | 0 | - | 4.91 | 186,002 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 198,199 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 153,085 |
| Countries that End in I | 0 | - | 4.94 | 135,222 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,387 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,940 |
| Countries That End in NIA | 0 | - | 4.92 | 109,929 |
| Countries That End in BIA | 0 | - | 4.93 | 149,408 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,344 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,636 |
| Countries That End in RIA | 0 | - | 4.93 | 126,948 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,223 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 228,130 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,964 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,406 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,950 |
| Add A Letter - Make a Country | 0 | - | 4.81 | 74,695 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,197 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,495 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,730 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,552 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,528 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 54,213 |
| Countries that End in L | 0 | - | 4.94 | 157,001 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,761 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,309 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,159 |
| City to Country Quiz #3 | 0 | - | 4.88 | 119,091 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,136 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 250,130 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,930 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,303 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 164,064 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,741 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 153,062 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,175 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,761 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 63,124 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 263,561 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,522 |
| Name a Valid African Country | 0 | - | 4.98 | 154,736 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,551 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,451,373 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,756 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,535 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,842,344 |
| One Border Countries | 0 | - | 4.98 | 471,005 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,643,506 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,762 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,593 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 87,124 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,624 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,443 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,736 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.90 | 93,988 |
