| Countries With One Word And Two O's | 0 | - | 4.92 | 56,158 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,624,140 |
| Landlocked Countries | 0 | - | 4.99 | 422,501 |
| Countries of Europe - One Minute Sprint | 0 | - | 4.94 | 1,331,312 |
| Countries by Emojis | 0 | - | 4.99 | 240,573 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,782,562 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,782 |
| Himalayan Countries | 0 | - | 4.95 | 138,967 |
| Andean Countries | 0 | - | 4.93 | 84,758 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,983 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 126,042 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,584 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,907 |
| Danube Countries | 0 | - | 4.97 | 72,084 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,105 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,484 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,431 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,910 |
| European Landlocked Countries | 0 | - | 4.99 | 147,213 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,751 |
| Countries with the Most Species | 0 | - | 4.99 | 103,294 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,864 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,627 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,745 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,587 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,301 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,723 |
| Countries in the Alps | 0 | - | 4.87 | 118,291 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,444 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,151 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,711 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,659 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,576 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,993 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,737 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,558 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,213 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,912 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,687 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,564 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,273 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,530 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,590 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 119,029 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,360 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,391 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,164 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,207 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,283 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,274 |
| Largest Countries By Category | 0 | - | 4.97 | 158,319 |
| Countries by Countries | 0 | - | 4.96 | 63,306 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,760 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,306 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,579 |
| Six Degrees of Separation - Countries #1 | 0 | - | 4.96 | 99,076 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,733 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 332,029 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,657 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,666 |
| Island Countries | 0 | - | 4.99 | 711,222 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,516 |
| Northernmost Countries | 0 | - | 4.99 | 362,219 |
| Countries of South America | 0 | - | 5.00 | 928,094 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,874 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,921 |
| "Land" Countries | 0 | - | 4.98 | 337,485 |
| Asian Countries with the Shortest Names | 0 | - | 4.97 | 135,615 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 121,316 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,882 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,634 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,990 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,995 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 96,376 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,255 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 174,043 |
| Countries with Megacities | 0 | - | 4.99 | 264,915 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,867 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,556 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,134 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,629 |
| Countries by Official Language | 0 | - | 4.95 | 195,351 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,518 |
| Countries in their Native Language | 0 | - | 4.99 | 199,143 |
| Independence from Whom | 0 | - | 4.99 | 212,232 |
| Subdivisions by Country | 0 | - | 4.87 | 50,451 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,821 |
| Megadiverse Countries | 0 | - | 4.96 | 135,057 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,193 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,385 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,264 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,125 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,198 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,628 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,543 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,068 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,685 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,162 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,786 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,918 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,231 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,995 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,381 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,517 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,349 |
| World Map Quiz | 0 | - | 4.81 | 65,169 |
| Countries that Produce the Most Beer | 0 | - | 4.85 | 131,244 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 157,561 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,400 |
| Countries by Founding Story | 0 | - | 4.95 | 77,414 |
| Countries by Road Signs | 0 | - | 4.98 | 54,059 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,195 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,341 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,045 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,367 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,945 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,056 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,339 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,472 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,609 |
| Widest Countries East to West | 0 | - | 4.92 | 129,703 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,469 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,441 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,142 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,801 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,633 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,917 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,394 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,813 |
| Countries with Double Letters | 0 | - | 4.96 | 96,341 |
| Countries that End in N | 0 | - | 4.95 | 171,235 |
| Countries with Five Letters | 0 | - | 4.96 | 282,694 |
| Countries with Six Letters | 0 | - | 4.94 | 213,675 |
| Countries with W | 0 | - | 4.97 | 160,405 |
| Countries with Z | 0 | - | 4.98 | 291,585 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,772 |
| Countries That End in U | 0 | - | 4.95 | 120,886 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,539 |
| Countries that End in O | 0 | - | 4.92 | 159,544 |
| Countries that End in R | 0 | - | 4.87 | 118,990 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,759 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,193 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,747 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,516 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,435 |
| Countries That End in Y | 0 | - | 4.91 | 185,900 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,995 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,910 |
| Countries that End in I | 0 | - | 4.94 | 135,127 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,170 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,846 |
| Countries That End in NIA | 0 | - | 4.92 | 109,822 |
| Countries That End in BIA | 0 | - | 4.93 | 149,253 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,160 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,466 |
| Countries That End in RIA | 0 | - | 4.93 | 126,845 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,051 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,739 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,772 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,199 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,748 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,604 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,065 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,458 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,564 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,453 |
| Countries with the Word "And" | 0 | - | 4.99 | 117,336 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,037 |
| Countries that End in L | 0 | - | 4.94 | 156,876 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 216,011 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,281 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,054 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,982 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,031 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,839 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,717 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,180 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,893 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,531 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,907 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,124 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,720 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,901 |
| Name a Valid European Country #1 | 0 | - | 4.99 | 262,549 |
| Name a Valid Asian Country | 0 | - | 4.98 | 121,291 |
| Name a Valid African Country | 0 | - | 4.98 | 154,440 |
| Name a Valid European Country #2 | 0 | - | 4.94 | 115,152 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,449,018 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,178 |
| Foods by Country of Origin #1 | 0 | - | 4.41 | 337,172 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,836,835 |
| One Border Countries | 0 | - | 4.98 | 470,157 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,635,513 |
| Category Elimination - European Countries #1 | 0 | - | 4.90 | 90,452 |
| Every Country in its Official/Native Language | 0 | - | 4.98 | 25,501 |
| Five Most Densely Populated Countries by Continent | 0 | - | 4.96 | 86,993 |
| Five Most Populated Countries by Continent | 0 | - | 4.99 | 268,322 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,235 |
| Top 10 Most Densely-Populated Countries in Europe | 0 | - | 4.98 | 112,607 |
| Five Least Densely Populated Countries by Continent | 0 | - | 4.92 | 93,788 |
